merge: fixed merge conflicts

backend/src/controllers/learning-paths.ts

@@ -3,13 +3,10 @@ import { themes } from '../data/themes.js';
 import { FALLBACK_LANG } from '../config.js';
 import learningPathService from '../services/learning-paths/learning-path-service.js';
 import { Language } from '@dwengo-1/common/util/language';
-import {
-    PersonalizationTarget,
-    personalizedForGroup,
-    personalizedForStudent,
-} from '../services/learning-paths/learning-path-personalization-util.js';
 import { BadRequestException } from '../exceptions/bad-request-exception.js';
 import { NotFoundException } from '../exceptions/not-found-exception.js';
+import { Group } from '../entities/assignments/group.entity.js';
+import { getAssignmentRepository, getGroupRepository } from '../data/repositories.js';
 
 /**
  * Fetch learning paths based on query parameters.
@@ -20,20 +17,20 @@ export async function getLearningPaths(req: Request, res: Response): Promise<voi
     const searchQuery = req.query.search as string;
     const language = (req.query.language as string) || FALLBACK_LANG;
 
-    const forStudent = req.query.forStudent as string;
     const forGroupNo = req.query.forGroup as string;
     const assignmentNo = req.query.assignmentNo as string;
     const classId = req.query.classId as string;
 
-    let personalizationTarget: PersonalizationTarget | undefined;
+    let forGroup: Group | undefined;
 
-    if (forStudent) {
+    if (forGroupNo) {
-        personalizationTarget = await personalizedForStudent(forStudent);
-    } else if (forGroupNo) {
         if (!assignmentNo || !classId) {
             throw new BadRequestException('If forGroupNo is specified, assignmentNo and classId must also be specified.');
         }
-        personalizationTarget = await personalizedForGroup(classId, parseInt(assignmentNo), parseInt(forGroupNo));
+        const assignment = await getAssignmentRepository().findByClassIdAndAssignmentId(classId, parseInt(assignmentNo));
+        if (assignment) {
+            forGroup = (await getGroupRepository().findByAssignmentAndGroupNumber(assignment, parseInt(forGroupNo))) ?? undefined;
+        }
     }
 
     let hruidList;
@@ -48,18 +45,13 @@ export async function getLearningPaths(req: Request, res: Response): Promise<voi
             throw new NotFoundException(`Theme "${themeKey}" not found.`);
         }
     } else if (searchQuery) {
-        const searchResults = await learningPathService.searchLearningPaths(searchQuery, language as Language, personalizationTarget);
+        const searchResults = await learningPathService.searchLearningPaths(searchQuery, language as Language, forGroup);
         res.json(searchResults);
         return;
     } else {
         hruidList = themes.flatMap((theme) => theme.hruids);
     }
 
-    const learningPaths = await learningPathService.fetchLearningPaths(
+    const learningPaths = await learningPathService.fetchLearningPaths(hruidList, language as Language, `HRUIDs: ${hruidList.join(', ')}`, forGroup);
-        hruidList,
-        language as Language,
-        `HRUIDs: ${hruidList.join(', ')}`,
-        personalizationTarget
-    );
     res.json(learningPaths.data);
 }

backend/src/controllers/submissions.ts

@@ -17,15 +17,18 @@ export async function getSubmissionsHandler(req: Request, res: Response): Promis
     const lang = languageMap[req.query.language as string] || Language.Dutch;
     const version = parseInt(req.query.version as string) ?? 1;
 
-    const submissions = await getSubmissionsForLearningObjectAndAssignment(
+    const forGroup = req.query.forGroup as string | undefined;
+
+    const submissions: SubmissionDTO[] = await getSubmissionsForLearningObjectAndAssignment(
         loHruid,
         lang,
         version,
         req.query.classId as string,
-        parseInt(req.query.assignmentId as string)
+        parseInt(req.query.assignmentId as string),
+        forGroup ? parseInt(forGroup) : undefined
     );
 
-    res.json(submissions);
+    res.json({ submissions });
 }
 
 export async function getSubmissionHandler(req: Request, res: Response): Promise<void> {

backend/src/data/assignments/submission-repository.ts

@@ -61,32 +61,30 @@ export class SubmissionRepository extends DwengoEntityRepository<Submission> {
 
     /**
      * Looks up all submissions for the given learning object which were submitted as part of the given assignment.
-     * When forStudentUsername is set, only the submissions of the given user's group are shown.
      */
-    public async findAllSubmissionsForLearningObjectAndAssignment(
+    public async findAllSubmissionsForLearningObjectAndAssignment(loId: LearningObjectIdentifier, assignment: Assignment): Promise<Submission[]> {
-        loId: LearningObjectIdentifier,
-        assignment: Assignment,
-        forStudentUsername?: string
-    ): Promise<Submission[]> {
-        const onBehalfOf = forStudentUsername
-            ? {
-                  assignment,
-                  members: {
-                      $some: {
-                          username: forStudentUsername,
-                      },
-                  },
-              }
-            : {
-                  assignment,
-              };
-
         return this.findAll({
             where: {
                 learningObjectHruid: loId.hruid,
                 learningObjectLanguage: loId.language,
                 learningObjectVersion: loId.version,
-                onBehalfOf,
+                onBehalfOf: {
+                    assignment,
+                },
+            },
+        });
+    }
+
+    /**
+     * Looks up all submissions for the given learning object which were submitted by the given group
+     */
+    public async findAllSubmissionsForLearningObjectAndGroup(loId: LearningObjectIdentifier, group: Group): Promise<Submission[]> {
+        return this.findAll({
+            where: {
+                learningObjectHruid: loId.hruid,
+                learningObjectLanguage: loId.language,
+                learningObjectVersion: loId.version,
+                onBehalfOf: group,
             },
         });
     }

backend/src/data/content/learning-path-repository.ts

@@ -1,6 +1,10 @@
 import { DwengoEntityRepository } from '../dwengo-entity-repository.js';
 import { LearningPath } from '../../entities/content/learning-path.entity.js';
 import { Language } from '@dwengo-1/common/util/language';
+import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
+import { RequiredEntityData } from '@mikro-orm/core';
+import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
+import { EntityAlreadyExistsException } from '../../exceptions/entity-already-exists-exception.js';
 
 export class LearningPathRepository extends DwengoEntityRepository<LearningPath> {
     public async findByHruidAndLanguage(hruid: string, language: Language): Promise<LearningPath | null> {
@@ -23,4 +27,27 @@ export class LearningPathRepository extends DwengoEntityRepository<LearningPath>
             populate: ['nodes', 'nodes.transitions'],
         });
     }
+
+    public createNode(nodeData: RequiredEntityData<LearningPathNode>): LearningPathNode {
+        return this.em.create(LearningPathNode, nodeData);
+    }
+
+    public createTransition(transitionData: RequiredEntityData<LearningPathTransition>): LearningPathTransition {
+        return this.em.create(LearningPathTransition, transitionData);
+    }
+
+    public async saveLearningPathNodesAndTransitions(
+        path: LearningPath,
+        nodes: LearningPathNode[],
+        transitions: LearningPathTransition[],
+        options?: { preventOverwrite?: boolean }
+    ): Promise<void> {
+        if (options?.preventOverwrite && (await this.findOne(path))) {
+            throw new EntityAlreadyExistsException('A learning path with this hruid/language combination already exists.');
+        }
+        const em = this.getEntityManager();
+        await em.persistAndFlush(path);
+        await Promise.all(nodes.map(async (it) => em.persistAndFlush(it)));
+        await Promise.all(transitions.map(async (it) => em.persistAndFlush(it)));
+    }
 }

backend/src/entities/assignments/submission.entity.ts

@@ -6,6 +6,9 @@ import { Language } from '@dwengo-1/common/util/language';
 
 @Entity({ repository: () => SubmissionRepository })
 export class Submission {
+    @PrimaryKey({ type: 'integer', autoincrement: true })
+    submissionNumber?: number;
+
     @PrimaryKey({ type: 'string' })
     learningObjectHruid!: string;
 
@@ -15,12 +18,9 @@ export class Submission {
     })
     learningObjectLanguage!: Language;
 
-    @PrimaryKey({ type: 'numeric' })
+    @PrimaryKey({ type: 'numeric', autoincrement: false })
     learningObjectVersion = 1;
 
-    @PrimaryKey({ type: 'integer', autoincrement: true })
-    submissionNumber?: number;
-
     @ManyToOne({
         entity: () => Group,
     })

backend/src/entities/content/learning-object.entity.ts

@@ -1,4 +1,4 @@
-import { Embedded, Entity, Enum, ManyToMany, OneToMany, PrimaryKey, Property } from '@mikro-orm/core';
+import { ArrayType, Embedded, Entity, Enum, ManyToMany, OneToMany, PrimaryKey, Property } from '@mikro-orm/core';
 import { Attachment } from './attachment.entity.js';
 import { Teacher } from '../users/teacher.entity.js';
 import { DwengoContentType } from '../../services/learning-objects/processing/content-type.js';
@@ -42,7 +42,7 @@ export class LearningObject {
     @Property({ type: 'array' })
     keywords: string[] = [];
 
-    @Property({ type: 'array', nullable: true })
+    @Property({ type: new ArrayType((i) => Number(i)), nullable: true })
     targetAges?: number[] = [];
 
     @Property({ type: 'bool' })

backend/src/entities/content/learning-path-node.entity.ts

@@ -1,16 +1,16 @@
-import { Entity, Enum, ManyToOne, OneToMany, PrimaryKey, Property, Rel } from '@mikro-orm/core';
+import { Collection, Entity, Enum, ManyToOne, OneToMany, PrimaryKey, Property, Rel } from '@mikro-orm/core';
 import { LearningPath } from './learning-path.entity.js';
 import { LearningPathTransition } from './learning-path-transition.entity.js';
 import { Language } from '@dwengo-1/common/util/language';
 
 @Entity()
 export class LearningPathNode {
+    @PrimaryKey({ type: 'integer', autoincrement: true })
+    nodeNumber?: number;
+
     @ManyToOne({ entity: () => LearningPath, primary: true })
     learningPath!: Rel<LearningPath>;
 
-    @PrimaryKey({ type: 'integer', autoincrement: true })
-    nodeNumber!: number;
-
     @Property({ type: 'string' })
     learningObjectHruid!: string;
 
@@ -27,7 +27,7 @@ export class LearningPathNode {
     startNode!: boolean;
 
     @OneToMany({ entity: () => LearningPathTransition, mappedBy: 'node' })
-    transitions: LearningPathTransition[] = [];
+    transitions!: Collection<LearningPathTransition>;
 
     @Property({ length: 3 })
     createdAt: Date = new Date();

backend/src/entities/content/learning-path-transition.entity.ts

@@ -3,12 +3,12 @@ import { LearningPathNode } from './learning-path-node.entity.js';
 
 @Entity()
 export class LearningPathTransition {
-    @ManyToOne({ entity: () => LearningPathNode, primary: true })
-    node!: Rel<LearningPathNode>;
-
     @PrimaryKey({ type: 'numeric' })
     transitionNumber!: number;
 
+    @ManyToOne({ entity: () => LearningPathNode, primary: true })
+    node!: Rel<LearningPathNode>;
+
     @Property({ type: 'string' })
     condition!: string;
 

backend/src/entities/content/learning-path.entity.ts

@@ -1,4 +1,4 @@
-import { Entity, Enum, ManyToMany, OneToMany, PrimaryKey, Property } from '@mikro-orm/core';
+import { Collection, Entity, Enum, ManyToMany, OneToMany, PrimaryKey, Property } from '@mikro-orm/core';
 import { Teacher } from '../users/teacher.entity.js';
 import { LearningPathRepository } from '../../data/content/learning-path-repository.js';
 import { LearningPathNode } from './learning-path-node.entity.js';
@@ -25,5 +25,5 @@ export class LearningPath {
     image: Buffer | null = null;
 
     @OneToMany({ entity: () => LearningPathNode, mappedBy: 'learningPath' })
-    nodes: LearningPathNode[] = [];
+    nodes: Collection<LearningPathNode> = new Collection<LearningPathNode>(this);
 }

backend/src/interfaces/submission.ts

@@ -1,5 +1,5 @@
 import { Submission } from '../entities/assignments/submission.entity.js';
-import { mapToGroupDTO } from './group.js';
+import { mapToGroupDTOId } from './group.js';
 import { mapToStudentDTO } from './student.js';
 import { SubmissionDTO, SubmissionDTOId } from '@dwengo-1/common/interfaces/submission';
 import { getSubmissionRepository } from '../data/repositories.js';
@@ -13,11 +13,10 @@ export function mapToSubmissionDTO(submission: Submission): SubmissionDTO {
             language: submission.learningObjectLanguage,
             version: submission.learningObjectVersion,
         },
-
         submissionNumber: submission.submissionNumber,
         submitter: mapToStudentDTO(submission.submitter),
         time: submission.submissionTime,
-        group: submission.onBehalfOf ? mapToGroupDTO(submission.onBehalfOf, submission.onBehalfOf.assignment.within) : undefined,
+        group: submission.onBehalfOf ? mapToGroupDTOId(submission.onBehalfOf, submission.onBehalfOf.assignment.within) : undefined,
         content: submission.content,
     };
 }

backend/src/middleware/error-handling/error-handler.ts

@@ -9,7 +9,7 @@ export function errorHandler(err: unknown, _req: Request, res: Response, _: Next
         logger.warn(`An error occurred while handling a request: ${err} (-> HTTP ${err.status})`);
         res.status(err.status).json(err);
     } else {
-        logger.error(`Unexpected error occurred while handing a request: ${err}`);
+        logger.error(`Unexpected error occurred while handing a request: ${(err as { stack: string })?.stack ?? JSON.stringify(err)}`);
         res.status(500).json(err);
     }
 }

backend/src/routes/submissions.ts

@@ -5,7 +5,7 @@ const router = express.Router({ mergeParams: true });
 // Root endpoint used to search objects
 router.get('/', getSubmissionsHandler);
 
-router.post('/:id', createSubmissionHandler);
+router.post('/', createSubmissionHandler);
 
 // Information about an submission with id 'id'
 router.get('/:id', getSubmissionHandler);

backend/src/services/learning-objects.ts

@@ -8,12 +8,13 @@ import {
     LearningPathResponse,
 } from '@dwengo-1/common/interfaces/learning-content';
 import { getLogger } from '../logging/initalize.js';
+import { v4 } from 'uuid';
 
 function filterData(data: LearningObjectMetadata, htmlUrl: string): FilteredLearningObject {
     return {
         key: data.hruid, // Hruid learningObject (not path)
         _id: data._id,
-        uuid: data.uuid,
+        uuid: data.uuid || v4(),
         version: data.version,
         title: data.title,
         htmlUrl, // Url to fetch html content

backend/src/services/learning-objects/database-learning-object-provider.ts

@@ -32,7 +32,7 @@ function convertLearningObject(learningObject: LearningObject | null): FilteredL
         educationalGoals: learningObject.educationalGoals,
         returnValue: {
             callback_url: learningObject.returnValue.callbackUrl,
-            callback_schema: JSON.parse(learningObject.returnValue.callbackSchema),
+            callback_schema: learningObject.returnValue.callbackSchema === '' ? '' : JSON.parse(learningObject.returnValue.callbackSchema),
         },
         skosConcepts: learningObject.skosConcepts,
         targetAges: learningObject.targetAges || [],

backend/src/services/learning-objects/dwengo-api-learning-object-provider.ts

@@ -11,6 +11,7 @@ import {
     LearningPathIdentifier,
     LearningPathResponse,
 } from '@dwengo-1/common/interfaces/learning-content';
+import { v4 } from 'uuid';
 
 const logger: Logger = getLogger();
 
@@ -23,7 +24,7 @@ function filterData(data: LearningObjectMetadata): FilteredLearningObject {
     return {
         key: data.hruid, // Hruid learningObject (not path)
         _id: data._id,
-        uuid: data.uuid,
+        uuid: data.uuid ?? v4(),
         version: data.version,
         title: data.title,
         htmlUrl: `/learningObject/${data.hruid}/html?language=${data.language}&version=${data.version}`, // Url to fetch html content

backend/src/services/learning-objects/processing/gift/gift-processor.ts

@@ -38,7 +38,7 @@ class GiftProcessor extends StringProcessor {
         let html = "<div class='learning-object-gift'>\n";
         let i = 1;
         for (const question of quizQuestions) {
-            html += `    <div class='gift-question' id='gift-q${i}'>\n`;
+            html += `    <div class='gift-question gift-question-type-${question.type}' id='gift-q${i}'>\n`;
             html += '        ' + this.renderQuestion(question, i).replaceAll(/\n(.+)/g, '\n        $1'); // Replace for indentation.
             html += `    </div>\n`;
             i++;

backend/src/services/learning-objects/processing/gift/question-renderers/multiple-choice-question-renderer.ts

@@ -14,7 +14,7 @@ export class MultipleChoiceQuestionRenderer extends GIFTQuestionRenderer<Multipl
         for (const choice of question.choices) {
             renderedHtml += `<div class="gift-choice-div">\n`;
             renderedHtml += `    <input type='radio' id='gift-q${questionNumber}-choice-${i}' name='gift-q${questionNumber}-choices' value="${i}"/>\n`;
-            renderedHtml += `    <label for='gift-q${questionNumber}-choice-${i}'>${choice.text}</label>\n`;
+            renderedHtml += `    <label for='gift-q${questionNumber}-choice-${i}'>${choice.text.text}</label>\n`;
             renderedHtml += `</div>\n`;
             i++;
         }

backend/src/services/learning-paths/database-learning-path-provider.ts

@@ -4,7 +4,7 @@ import { getLearningPathRepository } from '../../data/repositories.js';
 import learningObjectService from '../learning-objects/learning-object-service.js';
 import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
 import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
-import { getLastSubmissionForCustomizationTarget, isTransitionPossible, PersonalizationTarget } from './learning-path-personalization-util.js';
+import { getLastSubmissionForGroup, isTransitionPossible } from './learning-path-personalization-util.js';
 import {
     FilteredLearningObject,
     LearningObjectNode,
@@ -13,13 +13,16 @@ import {
     Transition,
 } from '@dwengo-1/common/interfaces/learning-content';
 import { Language } from '@dwengo-1/common/util/language';
+import { Group } from '../../entities/assignments/group.entity';
+import { Collection } from '@mikro-orm/core';
+import { v4 } from 'uuid';
 
 /**
  * Fetches the corresponding learning object for each of the nodes and creates a map that maps each node to its
  * corresponding learning object.
  * @param nodes The nodes to find the learning object for.
  */
-async function getLearningObjectsForNodes(nodes: LearningPathNode[]): Promise<Map<LearningPathNode, FilteredLearningObject>> {
+async function getLearningObjectsForNodes(nodes: Collection<LearningPathNode>): Promise<Map<LearningPathNode, FilteredLearningObject>> {
     // Fetching the corresponding learning object for each of the nodes and creating a map that maps each node to
     // Its corresponding learning object.
     const nullableNodesToLearningObjects = new Map<LearningPathNode, FilteredLearningObject | null>(
@@ -44,7 +47,7 @@ async function getLearningObjectsForNodes(nodes: LearningPathNode[]): Promise<Ma
 /**
  * Convert the given learning path entity to an object which conforms to the learning path content.
  */
-async function convertLearningPath(learningPath: LearningPathEntity, order: number, personalizedFor?: PersonalizationTarget): Promise<LearningPath> {
+async function convertLearningPath(learningPath: LearningPathEntity, order: number, personalizedFor?: Group): Promise<LearningPath> {
     // Fetch the corresponding learning object for each node since some parts of the expected response contains parts
     // With information which is not available in the LearningPathNodes themselves.
     const nodesToLearningObjects: Map<LearningPathNode, FilteredLearningObject> = await getLearningObjectsForNodes(learningPath.nodes);
@@ -89,10 +92,10 @@ async function convertLearningPath(learningPath: LearningPathEntity, order: numb
 async function convertNode(
     node: LearningPathNode,
     learningObject: FilteredLearningObject,
-    personalizedFor: PersonalizationTarget | undefined,
+    personalizedFor: Group | undefined,
     nodesToLearningObjects: Map<LearningPathNode, FilteredLearningObject>
 ): Promise<LearningObjectNode> {
-    const lastSubmission = personalizedFor ? await getLastSubmissionForCustomizationTarget(node, personalizedFor) : null;
+    const lastSubmission = personalizedFor ? await getLastSubmissionForGroup(node, personalizedFor) : null;
     const transitions = node.transitions
         .filter(
             (trans) =>
@@ -108,6 +111,7 @@ async function convertNode(
         updatedAt: node.updatedAt.toISOString(),
         learningobject_hruid: node.learningObjectHruid,
         version: learningObject.version,
+        done: personalizedFor ? lastSubmission !== null : undefined,
         transitions,
     };
 }
@@ -121,7 +125,7 @@ async function convertNode(
  */
 async function convertNodes(
     nodesToLearningObjects: Map<LearningPathNode, FilteredLearningObject>,
-    personalizedFor?: PersonalizationTarget
+    personalizedFor?: Group
 ): Promise<LearningObjectNode[]> {
     const nodesPromise = Array.from(nodesToLearningObjects.entries()).map(async (entry) =>
         convertNode(entry[0], entry[1], personalizedFor, nodesToLearningObjects)
@@ -161,7 +165,7 @@ function convertTransition(
             _id: String(index), // Retained for backwards compatibility. The index uniquely identifies the transition within the learning path.
             default: false, // We don't work with default transitions but retain this for backwards compatibility.
             next: {
-                _id: nextNode._id + index, // Construct a unique ID for the transition for backwards compatibility.
+                _id: nextNode._id ? nextNode._id + index : v4(), // Construct a unique ID for the transition for backwards compatibility.
                 hruid: transition.next.learningObjectHruid,
                 language: nextNode.language,
                 version: nextNode.version,
@@ -177,12 +181,7 @@ const databaseLearningPathProvider: LearningPathProvider = {
     /**
      * Fetch the learning paths with the given hruids from the database.
      */
-    async fetchLearningPaths(
+    async fetchLearningPaths(hruids: string[], language: Language, source: string, personalizedFor?: Group): Promise<LearningPathResponse> {
-        hruids: string[],
-        language: Language,
-        source: string,
-        personalizedFor?: PersonalizationTarget
-    ): Promise<LearningPathResponse> {
         const learningPathRepo = getLearningPathRepository();
 
         const learningPaths = (await Promise.all(hruids.map(async (hruid) => learningPathRepo.findByHruidAndLanguage(hruid, language)))).filter(
@@ -202,7 +201,7 @@ const databaseLearningPathProvider: LearningPathProvider = {
     /**
      * Search learning paths in the database using the given search string.
      */
-    async searchLearningPaths(query: string, language: Language, personalizedFor?: PersonalizationTarget): Promise<LearningPath[]> {
+    async searchLearningPaths(query: string, language: Language, personalizedFor?: Group): Promise<LearningPath[]> {
         const learningPathRepo = getLearningPathRepository();
 
         const searchResults = await learningPathRepo.findByQueryStringAndLanguage(query, language);

backend/src/services/learning-paths/learning-path-personalization-util.ts

@@ -1,76 +1,22 @@
 import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
-import { Student } from '../../entities/users/student.entity.js';
 import { Group } from '../../entities/assignments/group.entity.js';
 import { Submission } from '../../entities/assignments/submission.entity.js';
-import { getClassRepository, getGroupRepository, getStudentRepository, getSubmissionRepository } from '../../data/repositories.js';
+import { getSubmissionRepository } from '../../data/repositories.js';
 import { LearningObjectIdentifier } from '../../entities/content/learning-object-identifier.js';
 import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
 import { JSONPath } from 'jsonpath-plus';
 
-export type PersonalizationTarget = { type: 'student'; student: Student } | { type: 'group'; group: Group };
-
 /**
- * Shortcut function to easily create a PersonalizationTarget object for a student by his/her username.
+ * Returns the last submission for the learning object associated with the given node and for the group
- * @param username Username of the student we want to generate a personalized learning path for.
- *                 If there is no student with this username, return undefined.
  */
-export async function personalizedForStudent(username: string): Promise<PersonalizationTarget | undefined> {
+export async function getLastSubmissionForGroup(node: LearningPathNode, pathFor: Group): Promise<Submission | null> {
-    const student = await getStudentRepository().findByUsername(username);
-    if (student) {
-        return {
-            type: 'student',
-            student: student,
-        };
-    }
-    return undefined;
-}
-
-/**
- * Shortcut function to easily create a PersonalizationTarget object for a group by class name, assignment number and
- * group number.
- * @param classId Id of the class in which this group was created
- * @param assignmentNumber Number of the assignment for which this group was created
- * @param groupNumber Number of the group for which we want to personalize the learning path.
- */
-export async function personalizedForGroup(
-    classId: string,
-    assignmentNumber: number,
-    groupNumber: number
-): Promise<PersonalizationTarget | undefined> {
-    const clazz = await getClassRepository().findById(classId);
-    if (!clazz) {
-        return undefined;
-    }
-    const group = await getGroupRepository().findOne({
-        assignment: {
-            within: clazz,
-            id: assignmentNumber,
-        },
-        groupNumber: groupNumber,
-    });
-    if (group) {
-        return {
-            type: 'group',
-            group: group,
-        };
-    }
-    return undefined;
-}
-
-/**
- * Returns the last submission for the learning object associated with the given node and for the student or group
- */
-export async function getLastSubmissionForCustomizationTarget(node: LearningPathNode, pathFor: PersonalizationTarget): Promise<Submission | null> {
     const submissionRepo = getSubmissionRepository();
     const learningObjectId: LearningObjectIdentifier = {
         hruid: node.learningObjectHruid,
         language: node.language,
         version: node.version,
     };
-    if (pathFor.type === 'group') {
+    return await submissionRepo.findMostRecentSubmissionForGroup(learningObjectId, pathFor);
-        return await submissionRepo.findMostRecentSubmissionForGroup(learningObjectId, pathFor.group);
-    }
-    return await submissionRepo.findMostRecentSubmissionForStudent(learningObjectId, pathFor.student);
 }
 
 /**

backend/src/services/learning-paths/learning-path-provider.ts

@@ -1,6 +1,6 @@
 import { LearningPath, LearningPathResponse } from '@dwengo-1/common/interfaces/learning-content';
-import { PersonalizationTarget } from './learning-path-personalization-util.js';
 import { Language } from '@dwengo-1/common/util/language';
+import { Group } from '../../entities/assignments/group.entity';
 
 /**
  * Generic interface for a service which provides access to learning paths from a data source.
@@ -9,10 +9,10 @@ export interface LearningPathProvider {
     /**
      * Fetch the learning paths with the given hruids from the data source.
      */
-    fetchLearningPaths(hruids: string[], language: Language, source: string, personalizedFor?: PersonalizationTarget): Promise<LearningPathResponse>;
+    fetchLearningPaths(hruids: string[], language: Language, source: string, personalizedFor?: Group): Promise<LearningPathResponse>;
 
     /**
      * Search learning paths in the data source using the given search string.
      */
-    searchLearningPaths(query: string, language: Language, personalizedFor?: PersonalizationTarget): Promise<LearningPath[]>;
+    searchLearningPaths(query: string, language: Language, personalizedFor?: Group): Promise<LearningPath[]>;
 }

backend/src/services/learning-paths/learning-path-service.ts

@@ -1,13 +1,78 @@
 import dwengoApiLearningPathProvider from './dwengo-api-learning-path-provider.js';
 import databaseLearningPathProvider from './database-learning-path-provider.js';
 import { envVars, getEnvVar } from '../../util/envVars.js';
-import { PersonalizationTarget } from './learning-path-personalization-util.js';
+import { LearningObjectNode, LearningPath, LearningPathResponse } from '@dwengo-1/common/interfaces/learning-content';
-import { LearningPath, LearningPathResponse } from '@dwengo-1/common/interfaces/learning-content';
 import { Language } from '@dwengo-1/common/util/language';
+import { Group } from '../../entities/assignments/group.entity.js';
+import { LearningPath as LearningPathEntity } from '../../entities/content/learning-path.entity.js';
+import { getLearningPathRepository } from '../../data/repositories.js';
+import { LearningPathNode } from '../../entities/content/learning-path-node.entity.js';
+import { LearningPathTransition } from '../../entities/content/learning-path-transition.entity.js';
+import { base64ToArrayBuffer } from '../../util/base64-buffer-conversion.js';
+import { TeacherDTO } from '@dwengo-1/common/interfaces/teacher';
+import { mapToTeacher } from '../../interfaces/teacher.js';
+import { Collection } from '@mikro-orm/core';
 
 const userContentPrefix = getEnvVar(envVars.UserContentPrefix);
 const allProviders = [dwengoApiLearningPathProvider, databaseLearningPathProvider];
 
+export function mapToLearningPath(dto: LearningPath, adminsDto: TeacherDTO[]): LearningPathEntity {
+    const admins = adminsDto.map((admin) => mapToTeacher(admin));
+    const repo = getLearningPathRepository();
+    const path = repo.create({
+        hruid: dto.hruid,
+        language: dto.language as Language,
+        description: dto.description,
+        title: dto.title,
+        admins,
+        image: dto.image ? Buffer.from(base64ToArrayBuffer(dto.image)) : null,
+    });
+    const nodes = dto.nodes.map((nodeDto: LearningObjectNode, i: number) =>
+        repo.createNode({
+            learningPath: path,
+            learningObjectHruid: nodeDto.learningobject_hruid,
+            nodeNumber: i,
+            language: nodeDto.language,
+            version: nodeDto.version,
+            startNode: nodeDto.start_node ?? false,
+            createdAt: new Date(),
+            updatedAt: new Date(),
+        })
+    );
+    dto.nodes.forEach((nodeDto) => {
+        const fromNode = nodes.find(
+            (it) => it.learningObjectHruid === nodeDto.learningobject_hruid && it.language === nodeDto.language && it.version === nodeDto.version
+        )!;
+        const transitions = nodeDto.transitions
+            .map((transDto, i) => {
+                const toNode = nodes.find(
+                    (it) =>
+                        it.learningObjectHruid === transDto.next.hruid &&
+                        it.language === transDto.next.language &&
+                        it.version === transDto.next.version
+                );
+
+                if (toNode) {
+                    return repo.createTransition({
+                        transitionNumber: i,
+                        node: fromNode,
+                        next: toNode,
+                        condition: transDto.condition ?? 'true',
+                    });
+                }
+                return undefined;
+            })
+            .filter((it) => it)
+            .map((it) => it!);
+
+        fromNode.transitions = new Collection<LearningPathTransition>(fromNode, transitions);
+    });
+
+    path.nodes = new Collection<LearningPathNode>(path, nodes);
+
+    return path;
+}
+
 /**
  * Service providing access to data about learning paths from the appropriate data source (database or Dwengo-api)
  */
@@ -19,12 +84,7 @@ const learningPathService = {
      * @param source
      * @param personalizedFor If this is set, a learning path personalized for the given group or student will be returned.
      */
-    async fetchLearningPaths(
+    async fetchLearningPaths(hruids: string[], language: Language, source: string, personalizedFor?: Group): Promise<LearningPathResponse> {
-        hruids: string[],
-        language: Language,
-        source: string,
-        personalizedFor?: PersonalizationTarget
-    ): Promise<LearningPathResponse> {
         const userContentHruids = hruids.filter((hruid) => hruid.startsWith(userContentPrefix));
         const nonUserContentHruids = hruids.filter((hruid) => !hruid.startsWith(userContentPrefix));
 
@@ -48,12 +108,23 @@ const learningPathService = {
     /**
      * Search learning paths in the data source using the given search string.
      */
-    async searchLearningPaths(query: string, language: Language, personalizedFor?: PersonalizationTarget): Promise<LearningPath[]> {
+    async searchLearningPaths(query: string, language: Language, personalizedFor?: Group): Promise<LearningPath[]> {
         const providerResponses = await Promise.all(
             allProviders.map(async (provider) => provider.searchLearningPaths(query, language, personalizedFor))
         );
         return providerResponses.flat();
     },
+
+    /**
+     * Add a new learning path to the database.
+     * @param dto Learning path DTO from which the learning path will be created.
+     * @param admins Teachers who should become an admin of the learning path.
+     */
+    async createNewLearningPath(dto: LearningPath, admins: TeacherDTO[]): Promise<void> {
+        const repo = getLearningPathRepository();
+        const path = mapToLearningPath(dto, admins);
+        await repo.save(path, { preventOverwrite: true });
+    },
 };
 
 export default learningPathService;

backend/src/services/submissions.ts

@@ -1,4 +1,4 @@
-import { getAssignmentRepository, getSubmissionRepository } from '../data/repositories.js';
+import { getAssignmentRepository, getGroupRepository, getSubmissionRepository } from '../data/repositories.js';
 import { LearningObjectIdentifier } from '../entities/content/learning-object-identifier.js';
 import { NotFoundException } from '../exceptions/not-found-exception.js';
 import { mapToSubmission, mapToSubmissionDTO } from '../interfaces/submission.js';
@@ -37,6 +37,7 @@ export async function createSubmission(submissionDTO: SubmissionDTO): Promise<Su
 
     const submissionRepository = getSubmissionRepository();
     const submission = mapToSubmission(submissionDTO, submitter, group);
+
     await submissionRepository.save(submission);
 
     return mapToSubmissionDTO(submission);
@@ -60,12 +61,18 @@ export async function getSubmissionsForLearningObjectAndAssignment(
     version: number,
     classId: string,
     assignmentId: number,
-    studentUsername?: string
+    groupId?: number
 ): Promise<SubmissionDTO[]> {
     const loId = new LearningObjectIdentifier(learningObjectHruid, language, version);
     const assignment = await getAssignmentRepository().findByClassIdAndAssignmentId(classId, assignmentId);
 
-    const submissions = await getSubmissionRepository().findAllSubmissionsForLearningObjectAndAssignment(loId, assignment!, studentUsername);
+    let submissions: Submission[];
+    if (groupId !== undefined) {
+        const group = await getGroupRepository().findByAssignmentAndGroupNumber(assignment!, groupId);
+        submissions = await getSubmissionRepository().findAllSubmissionsForLearningObjectAndGroup(loId, group!);
+    } else {
+        submissions = await getSubmissionRepository().findAllSubmissionsForLearningObjectAndAssignment(loId, assignment!);
+    }
 
     return submissions.map((s) => mapToSubmissionDTO(s));
 }

backend/src/sqlite-autoincrement-workaround.ts

@@ -27,7 +27,7 @@ export class SqliteAutoincrementSubscriber implements EventSubscriber {
 
         for (const prop of Object.values(args.meta.properties)) {
             const property = prop as EntityProperty<T>;
-            if (property.primary && property.autoincrement && !(args.entity as Record<string, unknown>)[property.name]) {
+            if (property.primary && property.autoincrement && (args.entity as Record<string, unknown>)[property.name] === undefined) {
                 // Obtain and increment sequence number of this entity.
                 const propertyKey = args.meta.class.name + '.' + property.name;
                 const nextSeqNumber = this.sequenceNumbersForEntityType.get(propertyKey) || 0;

backend/src/util/base64-buffer-conversion.ts

@@ -0,0 +1,12 @@
+/**
+ * Convert a Base64-encoded string into a buffer with the same data.
+ * @param base64 The Base64 encoded string.
+ */
+export function base64ToArrayBuffer(base64: string): ArrayBuffer {
+    const binaryString = atob(base64);
+    const bytes = new Uint8Array(binaryString.length);
+    for (let i = 0; i < binaryString.length; i++) {
+        bytes[i] = binaryString.charCodeAt(i);
+    }
+    return bytes.buffer;
+}

backend/tests/data/assignments/submissions.test.ts

@@ -91,9 +91,9 @@ describe('SubmissionRepository', () => {
         expect(result[2].submissionNumber).toBe(3);
     });
 
-    it("should find only the submissions for a certain learning object and assignment made for the user's group", async () => {
+    it('should find only the submissions for a certain learning object and assignment made for the given group', async () => {
-        const result = await submissionRepository.findAllSubmissionsForLearningObjectAndAssignment(loId, assignment!, 'Tool');
+        const group = await groupRepository.findByAssignmentAndGroupNumber(assignment!, 2);
-        // (student Tool is in group #2)
+        const result = await submissionRepository.findAllSubmissionsForLearningObjectAndGroup(loId, group!);
 
         expect(result).toHaveLength(1);
 

backend/tests/data/content/attachment-repository.test.ts

@@ -2,66 +2,57 @@ import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests.js';
 import { getAttachmentRepository, getLearningObjectRepository } from '../../../src/data/repositories.js';
 import { AttachmentRepository } from '../../../src/data/content/attachment-repository.js';
-import { LearningObjectRepository } from '../../../src/data/content/learning-object-repository.js';
-import example from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example.js';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity.js';
 import { Attachment } from '../../../src/entities/content/attachment.entity.js';
 import { LearningObjectIdentifier } from '../../../src/entities/content/learning-object-identifier.js';
-
+import { testLearningObjectPnNotebooks } from '../../test_assets/content/learning-objects.testdata';
-const NEWER_TEST_SUFFIX = 'nEweR';
+import { v4 as uuidV4 } from 'uuid';
-
-async function createTestLearningObjects(learningObjectRepo: LearningObjectRepository): Promise<{
-    older: LearningObject;
-    newer: LearningObject;
-}> {
-    const olderExample = example.createLearningObject();
-    await learningObjectRepo.save(olderExample);
-
-    const newerExample = example.createLearningObject();
-    newerExample.title = 'Newer example';
-    newerExample.version = 100;
-
-    return {
-        older: olderExample,
-        newer: newerExample,
-    };
-}
 
 describe('AttachmentRepository', () => {
     let attachmentRepo: AttachmentRepository;
-    let exampleLearningObjects: { older: LearningObject; newer: LearningObject };
+    let newLearningObject: LearningObject;
     let attachmentsOlderLearningObject: Attachment[];
 
     beforeAll(async () => {
         await setupTestApp();
+
+        attachmentsOlderLearningObject = testLearningObjectPnNotebooks.attachments as Attachment[];
+
         attachmentRepo = getAttachmentRepository();
-        exampleLearningObjects = await createTestLearningObjects(getLearningObjectRepository());
+        const learningObjectRepo = getLearningObjectRepository();
-    });
 
-    it('can add attachments to learning objects without throwing an error', async () => {
+        const newLearningObjectData = structuredClone(testLearningObjectPnNotebooks);
-        attachmentsOlderLearningObject = Object.values(example.createAttachment).map((fn) => fn(exampleLearningObjects.older));
+        newLearningObjectData.title = 'Newer example';
+        newLearningObjectData.version = 101;
+        newLearningObjectData.attachments = [];
+        newLearningObjectData.uuid = uuidV4();
+        newLearningObjectData.content = Buffer.from('Content of the newer example');
 
-        await Promise.all(attachmentsOlderLearningObject.map(async (attachment) => attachmentRepo.save(attachment)));
+        newLearningObject = learningObjectRepo.create(newLearningObjectData);
+        await learningObjectRepo.save(newLearningObject);
     });
 
     let attachmentOnlyNewer: Attachment;
     it('allows us to add attachments with the same name to a different learning object without throwing an error', async () => {
-        attachmentOnlyNewer = Object.values(example.createAttachment)[0](exampleLearningObjects.newer);
+        attachmentOnlyNewer = structuredClone(attachmentsOlderLearningObject[0]);
-        attachmentOnlyNewer.content.write(NEWER_TEST_SUFFIX);
+        attachmentOnlyNewer.learningObject = newLearningObject;
+        attachmentOnlyNewer.content = Buffer.from('New attachment content');
 
-        await attachmentRepo.save(attachmentOnlyNewer);
+        await attachmentRepo.save(attachmentRepo.create(attachmentOnlyNewer));
     });
 
     let olderLearningObjectId: LearningObjectIdentifier;
     it('returns the correct attachment when queried by learningObjectId and attachment name', async () => {
         olderLearningObjectId = {
-            hruid: exampleLearningObjects.older.hruid,
+            hruid: testLearningObjectPnNotebooks.hruid,
-            language: exampleLearningObjects.older.language,
+            language: testLearningObjectPnNotebooks.language,
-            version: exampleLearningObjects.older.version,
+            version: testLearningObjectPnNotebooks.version,
         };
 
         const result = await attachmentRepo.findByLearningObjectIdAndName(olderLearningObjectId, attachmentsOlderLearningObject[0].name);
-        expect(result).toBe(attachmentsOlderLearningObject[0]);
+        expect(result).not.toBeNull();
+        expect(result!.name).toEqual(attachmentsOlderLearningObject[0].name);
+        expect(result!.content).toEqual(attachmentsOlderLearningObject[0].content);
     });
 
     it('returns null when queried by learningObjectId and non-existing attachment name', async () => {
@@ -71,10 +62,12 @@ describe('AttachmentRepository', () => {
 
     it('returns the newer version of the attachment when only queried by hruid, language and attachment name (but not version)', async () => {
         const result = await attachmentRepo.findByMostRecentVersionOfLearningObjectAndName(
-            exampleLearningObjects.older.hruid,
+            testLearningObjectPnNotebooks.hruid,
-            exampleLearningObjects.older.language,
+            testLearningObjectPnNotebooks.language,
             attachmentOnlyNewer.name
         );
-        expect(result).toBe(attachmentOnlyNewer);
+        expect(result).not.toBeNull();
+        expect(result!.name).toEqual(attachmentOnlyNewer.name);
+        expect(result!.content).toEqual(attachmentOnlyNewer.content);
     });
 });

backend/tests/data/content/attachments.test.ts

@@ -1,28 +1,21 @@
 import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests.js';
-import { getAttachmentRepository, getLearningObjectRepository } from '../../../src/data/repositories.js';
+import { getAttachmentRepository } from '../../../src/data/repositories.js';
 import { AttachmentRepository } from '../../../src/data/content/attachment-repository.js';
-import { LearningObjectRepository } from '../../../src/data/content/learning-object-repository.js';
+import { testLearningObject02 } from '../../test_assets/content/learning-objects.testdata';
-import { LearningObjectIdentifier } from '../../../src/entities/content/learning-object-identifier.js';
-import { Language } from '@dwengo-1/common/util/language';
 
 describe('AttachmentRepository', () => {
     let attachmentRepository: AttachmentRepository;
-    let learningObjectRepository: LearningObjectRepository;
 
     beforeAll(async () => {
         await setupTestApp();
         attachmentRepository = getAttachmentRepository();
-        learningObjectRepository = getLearningObjectRepository();
     });
 
     it('should return the requested attachment', async () => {
-        const id = new LearningObjectIdentifier('id02', Language.English, 1);
-        const learningObject = await learningObjectRepository.findByIdentifier(id);
-
         const attachment = await attachmentRepository.findByMostRecentVersionOfLearningObjectAndName(
-            learningObject!.hruid,
+            testLearningObject02.hruid,
-            Language.English,
+            testLearningObject02.language,
             'attachment01'
         );
 

backend/tests/data/content/learning-object-repository.test.ts

@@ -2,48 +2,33 @@ import { beforeAll, describe, it, expect } from 'vitest';
 import { LearningObjectRepository } from '../../../src/data/content/learning-object-repository.js';
 import { setupTestApp } from '../../setup-tests.js';
 import { getLearningObjectRepository } from '../../../src/data/repositories.js';
-import example from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example.js';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity.js';
 import { expectToBeCorrectEntity } from '../../test-utils/expectations.js';
+import { testLearningObject01, testLearningObject02, testLearningObject03 } from '../../test_assets/content/learning-objects.testdata';
+import { v4 } from 'uuid';
 
 describe('LearningObjectRepository', () => {
     let learningObjectRepository: LearningObjectRepository;
 
-    let exampleLearningObject: LearningObject;
-
     beforeAll(async () => {
         await setupTestApp();
         learningObjectRepository = getLearningObjectRepository();
     });
 
-    it('should be able to add a learning object to it without an error', async () => {
+    it('should return a learning object when queried by id', async () => {
-        exampleLearningObject = example.createLearningObject();
-        await learningObjectRepository.insert(exampleLearningObject);
-    });
-
-    it('should return the learning object when queried by id', async () => {
         const result = await learningObjectRepository.findByIdentifier({
-            hruid: exampleLearningObject.hruid,
+            hruid: testLearningObject01.hruid,
-            language: exampleLearningObject.language,
+            language: testLearningObject02.language,
-            version: exampleLearningObject.version,
+            version: testLearningObject03.version,
         });
         expect(result).toBeInstanceOf(LearningObject);
-        expectToBeCorrectEntity(
+        expectToBeCorrectEntity(result!, testLearningObject01);
-            {
-                name: 'actual',
-                entity: result!,
-            },
-            {
-                name: 'expected',
-                entity: exampleLearningObject,
-            }
-        );
     });
 
     it('should return null when non-existing version is queried', async () => {
         const result = await learningObjectRepository.findByIdentifier({
-            hruid: exampleLearningObject.hruid,
+            hruid: testLearningObject01.hruid,
-            language: exampleLearningObject.language,
+            language: testLearningObject01.language,
             version: 100,
         });
         expect(result).toBe(null);
@@ -52,9 +37,12 @@ describe('LearningObjectRepository', () => {
     let newerExample: LearningObject;
 
     it('should allow a learning object with the same id except a different version to be added', async () => {
-        newerExample = example.createLearningObject();
+        const testLearningObject01Newer = structuredClone(testLearningObject01);
-        newerExample.version = 10;
+        testLearningObject01Newer.version = 10;
-        newerExample.title += ' (nieuw)';
+        testLearningObject01Newer.title += ' (nieuw)';
+        testLearningObject01Newer.uuid = v4();
+        testLearningObject01Newer.content = Buffer.from('This is the new content.');
+        newerExample = learningObjectRepository.create(testLearningObject01Newer);
         await learningObjectRepository.save(newerExample);
     });
 
@@ -66,7 +54,7 @@ describe('LearningObjectRepository', () => {
     });
 
     it('should return null when queried by non-existing hruid or language', async () => {
-        const result = await learningObjectRepository.findLatestByHruidAndLanguage('something_that_does_not_exist', exampleLearningObject.language);
+        const result = await learningObjectRepository.findLatestByHruidAndLanguage('something_that_does_not_exist', testLearningObject01.language);
         expect(result).toBe(null);
     });
 });

backend/tests/data/content/learning-objects.test.ts

@@ -4,6 +4,7 @@ import { getLearningObjectRepository } from '../../../src/data/repositories';
 import { setupTestApp } from '../../setup-tests';
 import { LearningObjectIdentifier } from '../../../src/entities/content/learning-object-identifier';
 import { Language } from '@dwengo-1/common/util/language';
+import { testLearningObject01 } from '../../test_assets/content/learning-objects.testdata';
 
 describe('LearningObjectRepository', () => {
     let learningObjectRepository: LearningObjectRepository;
@@ -13,8 +14,8 @@ describe('LearningObjectRepository', () => {
         learningObjectRepository = getLearningObjectRepository();
     });
 
-    const id01 = new LearningObjectIdentifier('id01', Language.English, 1);
+    const id01 = new LearningObjectIdentifier(testLearningObject01.hruid, testLearningObject01.language, testLearningObject01.version);
-    const id02 = new LearningObjectIdentifier('test_id', Language.English, 1);
+    const id02 = new LearningObjectIdentifier('non_existing_id', Language.English, 1);
 
     it('should return the learning object that matches identifier 1', async () => {
         const learningObject = await learningObjectRepository.findByIdentifier(id01);

backend/tests/data/content/learning-path-repository.test.ts

@@ -2,41 +2,27 @@ import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests.js';
 import { getLearningPathRepository } from '../../../src/data/repositories.js';
 import { LearningPathRepository } from '../../../src/data/content/learning-path-repository.js';
-import example from '../../test-assets/learning-paths/pn-werking-example.js';
 import { LearningPath } from '../../../src/entities/content/learning-path.entity.js';
-import { expectToBeCorrectEntity } from '../../test-utils/expectations.js';
+import { expectToBeCorrectEntity, expectToHaveFoundNothing, expectToHaveFoundPrecisely } from '../../test-utils/expectations.js';
 import { Language } from '@dwengo-1/common/util/language';
-
+import { testLearningPath01 } from '../../test_assets/content/learning-paths.testdata';
-function expectToHaveFoundPrecisely(expected: LearningPath, result: LearningPath[]): void {
+import { mapToLearningPath } from '../../../src/services/learning-paths/learning-path-service';
-    expect(result).toHaveProperty('length');
-    expect(result.length).toBe(1);
-    expectToBeCorrectEntity({ entity: result[0] }, { entity: expected });
-}
-
-function expectToHaveFoundNothing(result: LearningPath[]): void {
-    expect(result).toHaveProperty('length');
-    expect(result.length).toBe(0);
-}
 
 describe('LearningPathRepository', () => {
     let learningPathRepo: LearningPathRepository;
+    let examplePath: LearningPath;
 
     beforeAll(async () => {
         await setupTestApp();
         learningPathRepo = getLearningPathRepository();
+
+        examplePath = mapToLearningPath(testLearningPath01, []);
     });
 
-    let examplePath: LearningPath;
+    it('should return a learning path when it is queried by hruid and language', async () => {
-
+        const result = await learningPathRepo.findByHruidAndLanguage(testLearningPath01.hruid, testLearningPath01.language as Language);
-    it('should be able to add a learning path without throwing an error', async () => {
-        examplePath = example.createLearningPath();
-        await learningPathRepo.insert(examplePath);
-    });
-
-    it('should return the added path when it is queried by hruid and language', async () => {
-        const result = await learningPathRepo.findByHruidAndLanguage(examplePath.hruid, examplePath.language);
         expect(result).toBeInstanceOf(LearningPath);
-        expectToBeCorrectEntity({ entity: result! }, { entity: examplePath });
+        expectToBeCorrectEntity(result!, examplePath);
     });
 
     it('should return null to a query on a non-existing hruid or language', async () => {
@@ -45,7 +31,7 @@ describe('LearningPathRepository', () => {
     });
 
     it('should return the learning path when we search for a search term occurring in its title', async () => {
-        const result = await learningPathRepo.findByQueryStringAndLanguage(examplePath.title.slice(4, 9), examplePath.language);
+        const result = await learningPathRepo.findByQueryStringAndLanguage(examplePath.title.slice(9, 13), examplePath.language);
         expectToHaveFoundPrecisely(examplePath, result);
     });
 

backend/tests/data/content/learning-paths.test.ts

@@ -3,6 +3,7 @@ import { getLearningPathRepository } from '../../../src/data/repositories';
 import { LearningPathRepository } from '../../../src/data/content/learning-path-repository';
 import { setupTestApp } from '../../setup-tests';
 import { Language } from '@dwengo-1/common/util/language';
+import { testLearningPath01 } from '../../test_assets/content/learning-paths.testdata';
 
 describe('LearningPathRepository', () => {
     let learningPathRepository: LearningPathRepository;
@@ -19,10 +20,10 @@ describe('LearningPathRepository', () => {
     });
 
     it('should return requested learning path', async () => {
-        const learningPath = await learningPathRepository.findByHruidAndLanguage('id01', Language.English);
+        const learningPath = await learningPathRepository.findByHruidAndLanguage(testLearningPath01.hruid, testLearningPath01.language as Language);
 
         expect(learningPath).toBeTruthy();
-        expect(learningPath?.title).toBe('repertoire Tool');
+        expect(learningPath?.title).toBe(testLearningPath01.title);
-        expect(learningPath?.description).toBe('all about Tool');
+        expect(learningPath?.description).toBe(testLearningPath01.description);
     });
 });

backend/tests/services/learning-objects/database-learning-object-provider.test.ts

@@ -1,37 +1,32 @@
 import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests';
-import { getLearningObjectRepository, getLearningPathRepository } from '../../../src/data/repositories';
-import example from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity';
 import databaseLearningObjectProvider from '../../../src/services/learning-objects/database-learning-object-provider';
 import { expectToBeCorrectFilteredLearningObject } from '../../test-utils/expectations';
 import { Language } from '@dwengo-1/common/util/language';
-import learningObjectExample from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example';
+import { FilteredLearningObject, LearningObjectNode, LearningPathIdentifier } from '@dwengo-1/common/interfaces/learning-content';
-import learningPathExample from '../../test-assets/learning-paths/pn-werking-example';
+import { testPartiallyDatabaseAndPartiallyDwengoApiLearningPath } from '../../test_assets/content/learning-paths.testdata';
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
+import { testLearningObjectPnNotebooks } from '../../test_assets/content/learning-objects.testdata';
-import { FilteredLearningObject } from '@dwengo-1/common/interfaces/learning-content';
+import { LearningPath } from '@dwengo-1/common/dist/interfaces/learning-content';
-
+import { RequiredEntityData } from '@mikro-orm/core';
-async function initExampleData(): Promise<{ learningObject: LearningObject; learningPath: LearningPath }> {
+import { getHtmlRenderingForTestLearningObject } from '../../test-utils/get-html-rendering';
-    const learningObjectRepo = getLearningObjectRepository();
-    const learningPathRepo = getLearningPathRepository();
-    const learningObject = learningObjectExample.createLearningObject();
-    const learningPath = learningPathExample.createLearningPath();
-    await learningObjectRepo.save(learningObject);
-    await learningPathRepo.save(learningPath);
-    return { learningObject, learningPath };
-}
 
 const EXPECTED_TITLE_FROM_DWENGO_LEARNING_OBJECT = 'Notebook opslaan';
 
 describe('DatabaseLearningObjectProvider', () => {
-    let exampleLearningObject: LearningObject;
+    let exampleLearningObject: RequiredEntityData<LearningObject>;
     let exampleLearningPath: LearningPath;
+    let exampleLearningPathId: LearningPathIdentifier;
 
     beforeAll(async () => {
         await setupTestApp();
-        const exampleData = await initExampleData();
+        exampleLearningObject = testLearningObjectPnNotebooks;
-        exampleLearningObject = exampleData.learningObject;
+        exampleLearningPath = testPartiallyDatabaseAndPartiallyDwengoApiLearningPath;
-        exampleLearningPath = exampleData.learningPath;
+
+        exampleLearningPathId = {
+            hruid: exampleLearningPath.hruid,
+            language: exampleLearningPath.language as Language,
+        };
     });
     describe('getLearningObjectById', () => {
         it('should return the learning object when it is queried by its id', async () => {
@@ -61,7 +56,7 @@ describe('DatabaseLearningObjectProvider', () => {
         it('should return the correct rendering of the learning object', async () => {
             const result = await databaseLearningObjectProvider.getLearningObjectHTML(exampleLearningObject);
             // Set newlines so your tests are platform-independent.
-            expect(result).toEqual(example.getHTMLRendering().replace(/\r\n/g, '\n'));
+            expect(result).toEqual(getHtmlRenderingForTestLearningObject(exampleLearningObject).replace(/\r\n/g, '\n'));
         });
         it('should return null for a non-existing learning object', async () => {
             const result = await databaseLearningObjectProvider.getLearningObjectHTML({
@@ -73,8 +68,8 @@ describe('DatabaseLearningObjectProvider', () => {
     });
     describe('getLearningObjectIdsFromPath', () => {
         it('should return all learning object IDs from a path', async () => {
-            const result = await databaseLearningObjectProvider.getLearningObjectIdsFromPath(exampleLearningPath);
+            const result = await databaseLearningObjectProvider.getLearningObjectIdsFromPath(exampleLearningPathId);
-            expect(new Set(result)).toEqual(new Set(exampleLearningPath.nodes.map((it) => it.learningObjectHruid)));
+            expect(new Set(result)).toEqual(new Set(exampleLearningPath.nodes.map((it: LearningObjectNode) => it.learningobject_hruid)));
         });
         it('should throw an error if queried with a path identifier for which there is no learning path', async () => {
             await expect(
@@ -89,9 +84,11 @@ describe('DatabaseLearningObjectProvider', () => {
     });
     describe('getLearningObjectsFromPath', () => {
         it('should correctly return all learning objects which are on the path, even those who are not in the database', async () => {
-            const result = await databaseLearningObjectProvider.getLearningObjectsFromPath(exampleLearningPath);
+            const result = await databaseLearningObjectProvider.getLearningObjectsFromPath(exampleLearningPathId);
             expect(result.length).toBe(exampleLearningPath.nodes.length);
-            expect(new Set(result.map((it) => it.key))).toEqual(new Set(exampleLearningPath.nodes.map((it) => it.learningObjectHruid)));
+            expect(new Set(result.map((it) => it.key))).toEqual(
+                new Set(exampleLearningPath.nodes.map((it: LearningObjectNode) => it.learningobject_hruid))
+            );
 
             expect(result.map((it) => it.title)).toContainEqual(EXPECTED_TITLE_FROM_DWENGO_LEARNING_OBJECT);
         });

backend/tests/services/learning-objects/learning-object-service.test.ts

@@ -1,14 +1,14 @@
 import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity';
-import { getLearningObjectRepository, getLearningPathRepository } from '../../../src/data/repositories';
-import learningObjectExample from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example';
 import learningObjectService from '../../../src/services/learning-objects/learning-object-service';
 import { envVars, getEnvVar } from '../../../src/util/envVars';
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
+import { LearningObjectIdentifierDTO, LearningPath as LearningPathDTO, LearningPathIdentifier } from '@dwengo-1/common/interfaces/learning-content';
-import learningPathExample from '../../test-assets/learning-paths/pn-werking-example';
-import { LearningObjectIdentifierDTO, LearningPathIdentifier } from '@dwengo-1/common/interfaces/learning-content';
 import { Language } from '@dwengo-1/common/util/language';
+import { testLearningObjectPnNotebooks } from '../../test_assets/content/learning-objects.testdata';
+import { testPartiallyDatabaseAndPartiallyDwengoApiLearningPath } from '../../test_assets/content/learning-paths.testdata';
+import { RequiredEntityData } from '@mikro-orm/core';
+import { getHtmlRenderingForTestLearningObject } from '../../test-utils/get-html-rendering';
 
 const EXPECTED_DWENGO_LEARNING_OBJECT_TITLE = 'Werken met notebooks';
 const DWENGO_TEST_LEARNING_OBJECT_ID: LearningObjectIdentifierDTO = {
@@ -23,25 +23,20 @@ const DWENGO_TEST_LEARNING_PATH_ID: LearningPathIdentifier = {
 };
 const DWENGO_TEST_LEARNING_PATH_HRUIDS = new Set(['pn_werkingnotebooks', 'pn_werkingnotebooks2', 'pn_werkingnotebooks3']);
 
-async function initExampleData(): Promise<{ learningObject: LearningObject; learningPath: LearningPath }> {
-    const learningObjectRepo = getLearningObjectRepository();
-    const learningPathRepo = getLearningPathRepository();
-    const learningObject = learningObjectExample.createLearningObject();
-    const learningPath = learningPathExample.createLearningPath();
-    await learningObjectRepo.save(learningObject);
-    await learningPathRepo.save(learningPath);
-    return { learningObject, learningPath };
-}
-
 describe('LearningObjectService', () => {
-    let exampleLearningObject: LearningObject;
+    let exampleLearningObject: RequiredEntityData<LearningObject>;
-    let exampleLearningPath: LearningPath;
+    let exampleLearningPath: LearningPathDTO;
+    let exampleLearningPathId: LearningPathIdentifier;
 
     beforeAll(async () => {
         await setupTestApp();
-        const exampleData = await initExampleData();
+        exampleLearningObject = testLearningObjectPnNotebooks;
-        exampleLearningObject = exampleData.learningObject;
+        exampleLearningPath = testPartiallyDatabaseAndPartiallyDwengoApiLearningPath;
-        exampleLearningPath = exampleData.learningPath;
+
+        exampleLearningPathId = {
+            hruid: exampleLearningPath.hruid,
+            language: exampleLearningPath.language as Language,
+        };
     });
 
     describe('getLearningObjectById', () => {
@@ -69,7 +64,7 @@ describe('LearningObjectService', () => {
             const result = await learningObjectService.getLearningObjectHTML(exampleLearningObject);
             expect(result).not.toBeNull();
             // Set newlines so your tests are platform-independent.
-            expect(result).toEqual(learningObjectExample.getHTMLRendering().replace(/\r\n/g, '\n'));
+            expect(result).toEqual(getHtmlRenderingForTestLearningObject(exampleLearningObject).replace(/\r\n/g, '\n'));
         });
         it(
             'returns the same HTML as the Dwengo API when queried with the identifier of a learning object that does ' +
@@ -97,8 +92,8 @@ describe('LearningObjectService', () => {
 
     describe('getLearningObjectsFromPath', () => {
         it('returns all learning objects when a learning path in the database is queried', async () => {
-            const result = await learningObjectService.getLearningObjectsFromPath(exampleLearningPath);
+            const result = await learningObjectService.getLearningObjectsFromPath(exampleLearningPathId);
-            expect(result.map((it) => it.key)).toEqual(exampleLearningPath.nodes.map((it) => it.learningObjectHruid));
+            expect(result.map((it) => it.key)).toEqual(exampleLearningPath.nodes.map((it) => it.learningobject_hruid));
         });
         it('also returns all learning objects when a learning path from the Dwengo API is queried', async () => {
             const result = await learningObjectService.getLearningObjectsFromPath(DWENGO_TEST_LEARNING_PATH_ID);
@@ -115,8 +110,8 @@ describe('LearningObjectService', () => {
 
     describe('getLearningObjectIdsFromPath', () => {
         it('returns all learning objects when a learning path in the database is queried', async () => {
-            const result = await learningObjectService.getLearningObjectIdsFromPath(exampleLearningPath);
+            const result = await learningObjectService.getLearningObjectIdsFromPath(exampleLearningPathId);
-            expect(result).toEqual(exampleLearningPath.nodes.map((it) => it.learningObjectHruid));
+            expect(result).toEqual(exampleLearningPath.nodes.map((it) => it.learningobject_hruid));
         });
         it('also returns all learning object hruids when a learning path from the Dwengo API is queried', async () => {
             const result = await learningObjectService.getLearningObjectIdsFromPath(DWENGO_TEST_LEARNING_PATH_ID);

backend/tests/services/learning-objects/processing/processing-service.test.ts

@@ -1,26 +1,35 @@
-import { describe, expect, it } from 'vitest';
+import { beforeAll, describe, expect, it } from 'vitest';
-import mdExample from '../../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example';
-import multipleChoiceExample from '../../../test-assets/learning-objects/test-multiple-choice/test-multiple-choice-example';
-import essayExample from '../../../test-assets/learning-objects/test-essay/test-essay-example';
 import processingService from '../../../../src/services/learning-objects/processing/processing-service';
+import {
+    testLearningObjectEssayQuestion,
+    testLearningObjectMultipleChoice,
+    testLearningObjectPnNotebooks,
+} from '../../../test_assets/content/learning-objects.testdata';
+import { getHtmlRenderingForTestLearningObject } from '../../../test-utils/get-html-rendering';
+import { getLearningObjectRepository } from '../../../../src/data/repositories';
+import { setupTestApp } from '../../../setup-tests';
 
 describe('ProcessingService', () => {
+    beforeAll(async () => {
+        await setupTestApp();
+    });
+
     it('renders a markdown learning object correctly', async () => {
-        const markdownLearningObject = mdExample.createLearningObject();
+        const markdownLearningObject = getLearningObjectRepository().create(testLearningObjectPnNotebooks);
         const result = await processingService.render(markdownLearningObject);
         // Set newlines so your tests are platform-independent.
-        expect(result).toEqual(mdExample.getHTMLRendering().replace(/\r\n/g, '\n'));
+        expect(result).toEqual(getHtmlRenderingForTestLearningObject(markdownLearningObject).replace(/\r\n/g, '\n'));
     });
 
     it('renders a multiple choice question correctly', async () => {
-        const multipleChoiceLearningObject = multipleChoiceExample.createLearningObject();
+        const testLearningObject = getLearningObjectRepository().create(testLearningObjectMultipleChoice);
-        const result = await processingService.render(multipleChoiceLearningObject);
+        const result = await processingService.render(testLearningObject);
-        expect(result).toEqual(multipleChoiceExample.getHTMLRendering().replace(/\r\n/g, '\n'));
+        expect(result).toEqual(getHtmlRenderingForTestLearningObject(testLearningObjectMultipleChoice).replace(/\r\n/g, '\n'));
     });
 
     it('renders an essay question correctly', async () => {
-        const essayLearningObject = essayExample.createLearningObject();
+        const essayLearningObject = getLearningObjectRepository().create(testLearningObjectEssayQuestion);
         const result = await processingService.render(essayLearningObject);
-        expect(result).toEqual(essayExample.getHTMLRendering().replace(/\r\n/g, '\n'));
+        expect(result).toEqual(getHtmlRenderingForTestLearningObject(essayLearningObject).replace(/\r\n/g, '\n'));
     });
 });

backend/tests/services/learning-path/database-learning-path-provider.test.ts

@@ -2,227 +2,112 @@ import { beforeAll, describe, expect, it } from 'vitest';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity.js';
 import { setupTestApp } from '../../setup-tests.js';
 import { LearningPath } from '../../../src/entities/content/learning-path.entity.js';
-import {
+import { getSubmissionRepository } from '../../../src/data/repositories.js';
-    getAssignmentRepository,
+
-    getClassRepository,
-    getGroupRepository,
-    getLearningObjectRepository,
-    getLearningPathRepository,
-    getStudentRepository,
-    getSubmissionRepository,
-} from '../../../src/data/repositories.js';
-import learningObjectExample from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example.js';
-import learningPathExample from '../../test-assets/learning-paths/pn-werking-example.js';
 import databaseLearningPathProvider from '../../../src/services/learning-paths/database-learning-path-provider.js';
 import { expectToBeCorrectLearningPath } from '../../test-utils/expectations.js';
-import learningObjectService from '../../../src/services/learning-objects/learning-object-service.js';
 import { Language } from '@dwengo-1/common/util/language';
-import {
-    ConditionTestLearningPathAndLearningObjects,
-    createConditionTestLearningPathAndLearningObjects,
-} from '../../test-assets/learning-paths/test-conditions-example.js';
-import { Student } from '../../../src/entities/users/student.entity.js';
 
 import { LearningObjectNode, LearningPathResponse } from '@dwengo-1/common/interfaces/learning-content';
+import {
+    testLearningObject01,
+    testLearningObjectEssayQuestion,
+    testLearningObjectMultipleChoice,
+} from '../../test_assets/content/learning-objects.testdata';
+import { testLearningPathWithConditions } from '../../test_assets/content/learning-paths.testdata';
+import { mapToLearningPath } from '../../../src/services/learning-paths/learning-path-service';
+import { getTestGroup01, getTestGroup02 } from '../../test_assets/assignments/groups.testdata';
+import { Group } from '../../../src/entities/assignments/group.entity.js';
+import { RequiredEntityData } from '@mikro-orm/core';
 
-const STUDENT_A_USERNAME = 'student_a';
+function expectBranchingObjectNode(result: LearningPathResponse): LearningObjectNode {
-const STUDENT_B_USERNAME = 'student_b';
+    const branchingObjectMatches = result.data![0].nodes.filter((it) => it.learningobject_hruid === testLearningObjectMultipleChoice.hruid);
-const CLASS_NAME = 'test_class';
-
-async function initExampleData(): Promise<{ learningObject: LearningObject; learningPath: LearningPath }> {
-    const learningObjectRepo = getLearningObjectRepository();
-    const learningPathRepo = getLearningPathRepository();
-    const learningObject = learningObjectExample.createLearningObject();
-    const learningPath = learningPathExample.createLearningPath();
-    await learningObjectRepo.save(learningObject);
-    await learningPathRepo.save(learningPath);
-    return { learningObject, learningPath };
-}
-
-async function initPersonalizationTestData(): Promise<{
-    learningContent: ConditionTestLearningPathAndLearningObjects;
-    studentA: Student;
-    studentB: Student;
-}> {
-    const studentRepo = getStudentRepository();
-    const classRepo = getClassRepository();
-    const assignmentRepo = getAssignmentRepository();
-    const groupRepo = getGroupRepository();
-    const submissionRepo = getSubmissionRepository();
-    const learningPathRepo = getLearningPathRepository();
-    const learningObjectRepo = getLearningObjectRepository();
-    const learningContent = createConditionTestLearningPathAndLearningObjects();
-    await learningObjectRepo.save(learningContent.branchingObject);
-    await learningObjectRepo.save(learningContent.finalObject);
-    await learningObjectRepo.save(learningContent.extraExerciseObject);
-    await learningPathRepo.save(learningContent.learningPath);
-
-    // Create students
-    const studentA = studentRepo.create({
-        username: STUDENT_A_USERNAME,
-        firstName: 'Aron',
-        lastName: 'Student',
-    });
-    await studentRepo.save(studentA);
-
-    const studentB = studentRepo.create({
-        username: STUDENT_B_USERNAME,
-        firstName: 'Bill',
-        lastName: 'Student',
-    });
-    await studentRepo.save(studentB);
-
-    // Create class for students
-    const testClass = classRepo.create({
-        classId: CLASS_NAME,
-        displayName: 'Test class',
-    });
-    await classRepo.save(testClass);
-
-    // Create assignment for students and assign them to different groups
-    const assignment = assignmentRepo.create({
-        id: 0,
-        title: 'Test assignment',
-        description: 'Test description',
-        learningPathHruid: learningContent.learningPath.hruid,
-        learningPathLanguage: learningContent.learningPath.language,
-        within: testClass,
-    });
-
-    const groupA = groupRepo.create({
-        groupNumber: 0,
-        members: [studentA],
-        assignment,
-    });
-    await groupRepo.save(groupA);
-
-    const groupB = groupRepo.create({
-        groupNumber: 1,
-        members: [studentB],
-        assignment,
-    });
-    await groupRepo.save(groupB);
-
-    // Let each of the students make a submission in his own group.
-    const submissionA = submissionRepo.create({
-        learningObjectHruid: learningContent.branchingObject.hruid,
-        learningObjectLanguage: learningContent.branchingObject.language,
-        learningObjectVersion: learningContent.branchingObject.version,
-        onBehalfOf: groupA,
-        submitter: studentA,
-        submissionTime: new Date(),
-        content: '[0]',
-    });
-    await submissionRepo.save(submissionA);
-
-    const submissionB = submissionRepo.create({
-        learningObjectHruid: learningContent.branchingObject.hruid,
-        learningObjectLanguage: learningContent.branchingObject.language,
-        learningObjectVersion: learningContent.branchingObject.version,
-        onBehalfOf: groupA,
-        submitter: studentB,
-        submissionTime: new Date(),
-        content: '[1]',
-    });
-    await submissionRepo.save(submissionB);
-
-    return {
-        learningContent: learningContent,
-        studentA: studentA,
-        studentB: studentB,
-    };
-}
-
-function expectBranchingObjectNode(
-    result: LearningPathResponse,
-    persTestData: {
-        learningContent: ConditionTestLearningPathAndLearningObjects;
-        studentA: Student;
-        studentB: Student;
-    }
-): LearningObjectNode {
-    const branchingObjectMatches = result.data![0].nodes.filter(
-        (it) => it.learningobject_hruid === persTestData.learningContent.branchingObject.hruid
-    );
     expect(branchingObjectMatches.length).toBe(1);
     return branchingObjectMatches[0];
 }
 
 describe('DatabaseLearningPathProvider', () => {
-    let example: { learningObject: LearningObject; learningPath: LearningPath };
+    let testLearningPath: LearningPath;
-    let persTestData: { learningContent: ConditionTestLearningPathAndLearningObjects; studentA: Student; studentB: Student };
+    let branchingLearningObject: RequiredEntityData<LearningObject>;
+    let extraExerciseLearningObject: RequiredEntityData<LearningObject>;
+    let finalLearningObject: RequiredEntityData<LearningObject>;
+    let groupA: Group;
+    let groupB: Group;
 
     beforeAll(async () => {
         await setupTestApp();
-        example = await initExampleData();
+        testLearningPath = mapToLearningPath(testLearningPathWithConditions, []);
-        persTestData = await initPersonalizationTestData();
+        branchingLearningObject = testLearningObjectMultipleChoice;
+        extraExerciseLearningObject = testLearningObject01;
+        finalLearningObject = testLearningObjectEssayQuestion;
+        groupA = getTestGroup01();
+        groupB = getTestGroup02();
+
+        // Place different submissions for group A and B.
+        const submissionRepo = getSubmissionRepository();
+        const submissionA = submissionRepo.create({
+            learningObjectHruid: branchingLearningObject.hruid,
+            learningObjectLanguage: branchingLearningObject.language,
+            learningObjectVersion: branchingLearningObject.version,
+            content: '[0]',
+            onBehalfOf: groupA,
+            submissionTime: new Date(),
+            submitter: groupA.members[0],
+        });
+        await submissionRepo.save(submissionA);
+
+        const submissionB = submissionRepo.create({
+            learningObjectHruid: branchingLearningObject.hruid,
+            learningObjectLanguage: branchingLearningObject.language,
+            learningObjectVersion: branchingLearningObject.version,
+            content: '[1]',
+            onBehalfOf: groupB,
+            submissionTime: new Date(),
+            submitter: groupB.members[0],
+        });
+        await submissionRepo.save(submissionB);
     });
 
     describe('fetchLearningPaths', () => {
         it('returns the learning path correctly', async () => {
-            const result = await databaseLearningPathProvider.fetchLearningPaths(
+            const result = await databaseLearningPathProvider.fetchLearningPaths([testLearningPath.hruid], testLearningPath.language, 'the source');
-                [example.learningPath.hruid],
-                example.learningPath.language,
-                'the source'
-            );
             expect(result.success).toBe(true);
             expect(result.data?.length).toBe(1);
 
-            const learningObjectsOnPath = (
+            expectToBeCorrectLearningPath(result.data![0], testLearningPathWithConditions);
-                await Promise.all(
-                    example.learningPath.nodes.map(async (node) =>
-                        learningObjectService.getLearningObjectById({
-                            hruid: node.learningObjectHruid,
-                            version: node.version,
-                            language: node.language,
-                        })
-                    )
-                )
-            ).filter((it) => it !== null);
-
-            expectToBeCorrectLearningPath(result.data![0], example.learningPath, learningObjectsOnPath);
         });
         it('returns the correct personalized learning path', async () => {
             // For student A:
             let result = await databaseLearningPathProvider.fetchLearningPaths(
-                [persTestData.learningContent.learningPath.hruid],
+                [testLearningPath.hruid],
-                persTestData.learningContent.learningPath.language,
+                testLearningPath.language,
                 'the source',
-                { type: 'student', student: persTestData.studentA }
+                groupA
             );
             expect(result.success).toBeTruthy();
             expect(result.data?.length).toBe(1);
 
             // There should be exactly one branching object
-            let branchingObject = expectBranchingObjectNode(result, persTestData);
+            let branchingObject = expectBranchingObjectNode(result);
 
-            expect(branchingObject.transitions.filter((it) => it.next.hruid === persTestData.learningContent.finalObject.hruid).length).toBe(0); // StudentA picked the first option, therefore, there should be no direct path to the final object.
+            expect(branchingObject.transitions.filter((it) => it.next.hruid === finalLearningObject.hruid).length).toBe(0); // StudentA picked the first option, therefore, there should be no direct path to the final object.
-            expect(branchingObject.transitions.filter((it) => it.next.hruid === persTestData.learningContent.extraExerciseObject.hruid).length).toBe(
+            expect(branchingObject.transitions.filter((it) => it.next.hruid === extraExerciseLearningObject.hruid).length).toBe(1); // There should however be a path to the extra exercise object.
-                1
-            ); // There should however be a path to the extra exercise object.
 
             // For student B:
-            result = await databaseLearningPathProvider.fetchLearningPaths(
+            result = await databaseLearningPathProvider.fetchLearningPaths([testLearningPath.hruid], testLearningPath.language, 'the source', groupB);
-                [persTestData.learningContent.learningPath.hruid],
-                persTestData.learningContent.learningPath.language,
-                'the source',
-                { type: 'student', student: persTestData.studentB }
-            );
             expect(result.success).toBeTruthy();
             expect(result.data?.length).toBe(1);
 
             // There should still be exactly one branching object
-            branchingObject = expectBranchingObjectNode(result, persTestData);
+            branchingObject = expectBranchingObjectNode(result);
 
             // However, now the student picks the other option.
-            expect(branchingObject.transitions.filter((it) => it.next.hruid === persTestData.learningContent.finalObject.hruid).length).toBe(1); // StudentB picked the second option, therefore, there should be a direct path to the final object.
+            expect(branchingObject.transitions.filter((it) => it.next.hruid === finalLearningObject.hruid).length).toBe(1); // StudentB picked the second option, therefore, there should be a direct path to the final object.
-            expect(branchingObject.transitions.filter((it) => it.next.hruid === persTestData.learningContent.extraExerciseObject.hruid).length).toBe(
+            expect(branchingObject.transitions.filter((it) => it.next.hruid === extraExerciseLearningObject.hruid).length).toBe(0); // There should not be a path anymore to the extra exercise object.
-                0
-            ); // There should not be a path anymore to the extra exercise object.
         });
         it('returns a non-successful response if a non-existing learning path is queried', async () => {
             const result = await databaseLearningPathProvider.fetchLearningPaths(
-                [example.learningPath.hruid],
+                [testLearningPath.hruid],
                 Language.Abkhazian, // Wrong language
                 'the source'
             );
@@ -233,27 +118,24 @@ describe('DatabaseLearningPathProvider', () => {
 
     describe('searchLearningPaths', () => {
         it('returns the correct learning path when queried with a substring of its title', async () => {
-            const result = await databaseLearningPathProvider.searchLearningPaths(
+            const result = await databaseLearningPathProvider.searchLearningPaths(testLearningPath.title.substring(2, 6), testLearningPath.language);
-                example.learningPath.title.substring(2, 6),
-                example.learningPath.language
-            );
             expect(result.length).toBe(1);
-            expect(result[0].title).toBe(example.learningPath.title);
+            expect(result[0].title).toBe(testLearningPath.title);
-            expect(result[0].description).toBe(example.learningPath.description);
+            expect(result[0].description).toBe(testLearningPath.description);
         });
         it('returns the correct learning path when queried with a substring of the description', async () => {
             const result = await databaseLearningPathProvider.searchLearningPaths(
-                example.learningPath.description.substring(5, 12),
+                testLearningPath.description.substring(5, 12),
-                example.learningPath.language
+                testLearningPath.language
             );
             expect(result.length).toBe(1);
-            expect(result[0].title).toBe(example.learningPath.title);
+            expect(result[0].title).toBe(testLearningPath.title);
-            expect(result[0].description).toBe(example.learningPath.description);
+            expect(result[0].description).toBe(testLearningPath.description);
         });
         it('returns an empty result when queried with a text which is not a substring of the title or the description of a learning path', async () => {
             const result = await databaseLearningPathProvider.searchLearningPaths(
                 'substring which does not occur in the title or the description of a learning object',
-                example.learningPath.language
+                testLearningPath.language
             );
             expect(result.length).toBe(0);
         });

backend/tests/services/learning-path/learning-path-service.test.ts

@@ -1,22 +1,9 @@
 import { beforeAll, describe, expect, it } from 'vitest';
 import { setupTestApp } from '../../setup-tests';
-import { LearningObject } from '../../../src/entities/content/learning-object.entity';
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
-import { getLearningObjectRepository, getLearningPathRepository } from '../../../src/data/repositories';
-import learningObjectExample from '../../test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example';
-import learningPathExample from '../../test-assets/learning-paths/pn-werking-example';
 import learningPathService from '../../../src/services/learning-paths/learning-path-service';
 import { Language } from '@dwengo-1/common/util/language';
-
+import { testPartiallyDatabaseAndPartiallyDwengoApiLearningPath } from '../../test_assets/content/learning-paths.testdata';
-async function initExampleData(): Promise<{ learningObject: LearningObject; learningPath: LearningPath }> {
+import { LearningPath as LearningPathDTO } from '@dwengo-1/common/interfaces/learning-content';
-    const learningObjectRepo = getLearningObjectRepository();
-    const learningPathRepo = getLearningPathRepository();
-    const learningObject = learningObjectExample.createLearningObject();
-    const learningPath = learningPathExample.createLearningPath();
-    await learningObjectRepo.save(learningObject);
-    await learningPathRepo.save(learningPath);
-    return { learningObject, learningPath };
-}
 
 const TEST_DWENGO_LEARNING_PATH_HRUID = 'pn_werking';
 const TEST_DWENGO_LEARNING_PATH_TITLE = 'Werken met notebooks';
@@ -24,42 +11,49 @@ const TEST_DWENGO_EXCLUSIVE_LEARNING_PATH_SEARCH_QUERY = 'Microscopie';
 const TEST_SEARCH_QUERY_EXPECTING_NO_MATCHES = 'su$m8f9usf89ud<p9<U8SDP8UP9';
 
 describe('LearningPathService', () => {
-    let example: { learningObject: LearningObject; learningPath: LearningPath };
+    let testLearningPath: LearningPathDTO;
     beforeAll(async () => {
         await setupTestApp();
-        example = await initExampleData();
+        testLearningPath = testPartiallyDatabaseAndPartiallyDwengoApiLearningPath;
     });
     describe('fetchLearningPaths', () => {
         it('should return learning paths both from the database and from the Dwengo API', async () => {
             const result = await learningPathService.fetchLearningPaths(
-                [example.learningPath.hruid, TEST_DWENGO_LEARNING_PATH_HRUID],
+                [testLearningPath.hruid, TEST_DWENGO_LEARNING_PATH_HRUID],
-                example.learningPath.language,
+                testLearningPath.language as Language,
                 'the source'
             );
             expect(result.success).toBeTruthy();
             expect(result.data?.filter((it) => it.hruid === TEST_DWENGO_LEARNING_PATH_HRUID).length).not.toBe(0);
-            expect(result.data?.filter((it) => it.hruid === example.learningPath.hruid).length).not.toBe(0);
+            expect(result.data?.filter((it) => it.hruid === testLearningPath.hruid).length).not.toBe(0);
             expect(result.data?.find((it) => it.hruid === TEST_DWENGO_LEARNING_PATH_HRUID)?.title).toEqual(TEST_DWENGO_LEARNING_PATH_TITLE);
-            expect(result.data?.find((it) => it.hruid === example.learningPath.hruid)?.title).toEqual(example.learningPath.title);
+            expect(result.data?.find((it) => it.hruid === testLearningPath.hruid)?.title).toEqual(testLearningPath.title);
         });
         it('should include both the learning objects from the Dwengo API and learning objects from the database in its response', async () => {
-            const result = await learningPathService.fetchLearningPaths([example.learningPath.hruid], example.learningPath.language, 'the source');
+            const result = await learningPathService.fetchLearningPaths(
+                [testLearningPath.hruid],
+                testLearningPath.language as Language,
+                'the source'
+            );
             expect(result.success).toBeTruthy();
             expect(result.data?.length).toBe(1);
 
             // Should include all the nodes, even those pointing to foreign learning objects.
             expect([...result.data![0].nodes.map((it) => it.learningobject_hruid)].sort((a, b) => a.localeCompare(b))).toEqual(
-                example.learningPath.nodes.map((it) => it.learningObjectHruid).sort((a, b) => a.localeCompare(b))
+                testLearningPath.nodes.map((it) => it.learningobject_hruid).sort((a, b) => a.localeCompare(b))
             );
         });
     });
     describe('searchLearningPath', () => {
         it('should include both the learning paths from the Dwengo API and those from the database in its response', async () => {
             // This matches the learning object in the database, but definitely also some learning objects in the Dwengo API.
-            const result = await learningPathService.searchLearningPaths(example.learningPath.title.substring(2, 3), example.learningPath.language);
+            const result = await learningPathService.searchLearningPaths(
+                testLearningPath.title.substring(2, 3),
+                testLearningPath.language as Language
+            );
 
             // Should find the one from the database
-            expect(result.filter((it) => it.hruid === example.learningPath.hruid && it.title === example.learningPath.title).length).toBe(1);
+            expect(result.filter((it) => it.hruid === testLearningPath.hruid && it.title === testLearningPath.title).length).toBe(1);
 
             // But should not only find that one.
             expect(result.length).not.toBeLessThan(2);
@@ -71,7 +65,7 @@ describe('LearningPathService', () => {
             expect(result.length).not.toBe(0);
 
             // But not the example learning path.
-            expect(result.filter((it) => it.hruid === example.learningPath.hruid && it.title === example.learningPath.title).length).toBe(0);
+            expect(result.filter((it) => it.hruid === testLearningPath.hruid && it.title === testLearningPath.title).length).toBe(0);
         });
         it('should return an empty list if neither the Dwengo API nor the database contains matches', async () => {
             const result = await learningPathService.searchLearningPaths(TEST_SEARCH_QUERY_EXPECTING_NO_MATCHES, Language.Dutch);

backend/tests/setup-tests.ts

@@ -14,6 +14,7 @@ import { makeTestQuestions } from './test_assets/questions/questions.testdata.js
 import { makeTestAnswers } from './test_assets/questions/answers.testdata.js';
 import { makeTestSubmissions } from './test_assets/assignments/submission.testdata.js';
 import { Collection } from '@mikro-orm/core';
+import { Group } from '../src/entities/assignments/group.entity';
 
 export async function setupTestApp(): Promise<void> {
     dotenv.config({ path: '.env.test' });
@@ -29,8 +30,8 @@ export async function setupTestApp(): Promise<void> {
     const assignments = makeTestAssignemnts(em, classes);
     const groups = makeTestGroups(em, students, assignments);
 
-    assignments[0].groups = new Collection(groups.slice(0, 3));
+    assignments[0].groups = new Collection<Group>(groups.slice(0, 3));
-    assignments[1].groups = new Collection(groups.slice(3, 4));
+    assignments[1].groups = new Collection<Group>(groups.slice(3, 4));
 
     const teacherInvitations = makeTestTeacherInvitations(em, teachers, classes);
     const classJoinRequests = makeTestClassJoinRequests(em, students, classes);

backend/tests/test-assets/learning-objects/create-example-learning-object-with-attachments.ts

@@ -1,10 +0,0 @@
-import { LearningObjectExample } from './learning-object-example';
-import { LearningObject } from '../../../src/entities/content/learning-object.entity';
-
-export function createExampleLearningObjectWithAttachments(example: LearningObjectExample): LearningObject {
-    const learningObject = example.createLearningObject();
-    for (const creationFn of Object.values(example.createAttachment)) {
-        learningObject.attachments.push(creationFn(learningObject));
-    }
-    return learningObject;
-}

backend/tests/test-assets/learning-objects/dummy/dummy-learning-object-example.ts

@@ -1,32 +0,0 @@
-import { LearningObjectExample } from '../learning-object-example';
-import { LearningObject } from '../../../../src/entities/content/learning-object.entity';
-import { Language } from '@dwengo-1/common/util/language';
-import { loadTestAsset } from '../../../test-utils/load-test-asset';
-import { DwengoContentType } from '../../../../src/services/learning-objects/processing/content-type';
-import { envVars, getEnvVar } from '../../../../src/util/envVars';
-
-/**
- * Create a dummy learning object to be used in tests where multiple learning objects are needed (for example for use
- * on a path), but where the precise contents of the learning object are not important.
- */
-export function dummyLearningObject(hruid: string, language: Language, title: string): LearningObjectExample {
-    return {
-        createLearningObject: (): LearningObject => {
-            const learningObject = new LearningObject();
-            learningObject.hruid = getEnvVar(envVars.UserContentPrefix) + hruid;
-            learningObject.language = language;
-            learningObject.version = 1;
-            learningObject.title = title;
-            learningObject.description = 'Just a dummy learning object for testing purposes';
-            learningObject.contentType = DwengoContentType.TEXT_PLAIN;
-            learningObject.content = Buffer.from('Dummy content');
-            learningObject.returnValue = {
-                callbackUrl: `/learningObject/${hruid}/submissions`,
-                callbackSchema: '[]',
-            };
-            return learningObject;
-        },
-        createAttachment: {},
-        getHTMLRendering: () => loadTestAsset('learning-objects/dummy/rendering.txt').toString(),
-    };
-}

backend/tests/test-assets/learning-objects/learning-object-example.d.ts

@@ -1,8 +0,0 @@
-import { LearningObject } from '../../../src/entities/content/learning-object.entity';
-import { Attachment } from '../../../src/entities/content/attachment.entity';
-
-interface LearningObjectExample {
-    createLearningObject: () => LearningObject;
-    createAttachment: Record<string, (owner: LearningObject) => Attachment>;
-    getHTMLRendering: () => string;
-}

backend/tests/test-assets/learning-objects/pn-werkingnotebooks/pn-werkingnotebooks-example.ts

@@ -1,74 +0,0 @@
-import { LearningObjectExample } from '../learning-object-example';
-import { Language } from '@dwengo-1/common/util/language';
-import { DwengoContentType } from '../../../../src/services/learning-objects/processing/content-type';
-import { loadTestAsset } from '../../../test-utils/load-test-asset';
-import { LearningObject } from '../../../../src/entities/content/learning-object.entity';
-import { Attachment } from '../../../../src/entities/content/attachment.entity';
-import { envVars, getEnvVar } from '../../../../src/util/envVars';
-import { EducationalGoal } from '../../../../src/entities/content/educational-goal.entity';
-import { ReturnValue } from '../../../../src/entities/content/return-value.entity';
-
-const ASSETS_PREFIX = 'learning-objects/pn-werkingnotebooks/';
-
-const example: LearningObjectExample = {
-    createLearningObject: () => {
-        const learningObject = new LearningObject();
-        learningObject.hruid = `${getEnvVar(envVars.UserContentPrefix)}pn_werkingnotebooks`;
-        learningObject.version = 3;
-        learningObject.language = Language.Dutch;
-        learningObject.title = 'Werken met notebooks';
-        learningObject.description = 'Leren werken met notebooks';
-        learningObject.keywords = ['Python', 'KIKS', 'Wiskunde', 'STEM', 'AI'];
-
-        const educationalGoal1 = new EducationalGoal();
-        educationalGoal1.source = 'Source';
-        educationalGoal1.id = 'id';
-
-        const educationalGoal2 = new EducationalGoal();
-        educationalGoal2.source = 'Source2';
-        educationalGoal2.id = 'id2';
-
-        learningObject.educationalGoals = [educationalGoal1, educationalGoal2];
-        learningObject.admins = [];
-        learningObject.contentType = DwengoContentType.TEXT_MARKDOWN;
-        learningObject.teacherExclusive = false;
-        learningObject.skosConcepts = [
-            'http://ilearn.ilabt.imec.be/vocab/curr1/s-vaktaal',
-            'http://ilearn.ilabt.imec.be/vocab/curr1/s-digitale-media-en-toepassingen',
-            'http://ilearn.ilabt.imec.be/vocab/curr1/s-computers-en-systemen',
-        ];
-        learningObject.copyright = 'dwengo';
-        learningObject.license = 'dwengo';
-        learningObject.estimatedTime = 10;
-
-        const returnValue = new ReturnValue();
-        returnValue.callbackUrl = 'callback_url_example';
-        returnValue.callbackSchema = '{"att": "test", "att2": "test2"}';
-
-        learningObject.returnValue = returnValue;
-        learningObject.available = true;
-        learningObject.content = loadTestAsset(`${ASSETS_PREFIX}/content.md`);
-
-        return learningObject;
-    },
-    createAttachment: {
-        dwengoLogo: (learningObject) => {
-            const att = new Attachment();
-            att.learningObject = learningObject;
-            att.name = 'dwengo.png';
-            att.mimeType = 'image/png';
-            att.content = loadTestAsset(`${ASSETS_PREFIX}/dwengo.png`);
-            return att;
-        },
-        knop: (learningObject) => {
-            const att = new Attachment();
-            att.learningObject = learningObject;
-            att.name = 'Knop.png';
-            att.mimeType = 'image/png';
-            att.content = loadTestAsset(`${ASSETS_PREFIX}/Knop.png`);
-            return att;
-        },
-    },
-    getHTMLRendering: () => loadTestAsset(`${ASSETS_PREFIX}/rendering.txt`).toString(),
-};
-export default example;

backend/tests/test-assets/learning-objects/test-essay/content.txt

@@ -1,2 +0,0 @@
-::MC basic::
-How are you? {}

backend/tests/test-assets/learning-objects/test-essay/rendering.txt

@@ -1,7 +0,0 @@
-<div class="learning-object-gift">
-    <div id="gift-q1" class="gift-question">
-        <h2 id="gift-q1-title" class="gift-title">MC basic</h2>
-        <p id="gift-q1-stem" class="gift-stem">How are you?</p>
-        <textarea id="gift-q1-answer" class="gift-essay-answer"></textarea>
-    </div>
-</div>

backend/tests/test-assets/learning-objects/test-essay/test-essay-example.ts

@@ -1,28 +0,0 @@
-import { LearningObjectExample } from '../learning-object-example';
-import { LearningObject } from '../../../../src/entities/content/learning-object.entity';
-import { loadTestAsset } from '../../../test-utils/load-test-asset';
-import { envVars, getEnvVar } from '../../../../src/util/envVars';
-import { Language } from '@dwengo-1/common/util/language';
-import { DwengoContentType } from '../../../../src/services/learning-objects/processing/content-type';
-
-const example: LearningObjectExample = {
-    createLearningObject: () => {
-        const learningObject = new LearningObject();
-        learningObject.hruid = `${getEnvVar(envVars.UserContentPrefix)}test_essay`;
-        learningObject.language = Language.English;
-        learningObject.version = 1;
-        learningObject.title = 'Essay question for testing';
-        learningObject.description = 'This essay question was only created for testing purposes.';
-        learningObject.contentType = DwengoContentType.GIFT;
-        learningObject.returnValue = {
-            callbackUrl: `/learningObject/${learningObject.hruid}/submissions`,
-            callbackSchema: '["antwoord vraag 1"]',
-        };
-        learningObject.content = loadTestAsset('learning-objects/test-essay/content.txt');
-        return learningObject;
-    },
-    createAttachment: {},
-    getHTMLRendering: () => loadTestAsset('learning-objects/test-essay/rendering.txt').toString(),
-};
-
-export default example;

backend/tests/test-assets/learning-objects/test-multiple-choice/test-multiple-choice-example.ts

@@ -1,28 +0,0 @@
-import { LearningObjectExample } from '../learning-object-example';
-import { LearningObject } from '../../../../src/entities/content/learning-object.entity';
-import { loadTestAsset } from '../../../test-utils/load-test-asset';
-import { envVars, getEnvVar } from '../../../../src/util/envVars';
-import { DwengoContentType } from '../../../../src/services/learning-objects/processing/content-type';
-import { Language } from '@dwengo-1/common/util/language';
-
-const example: LearningObjectExample = {
-    createLearningObject: () => {
-        const learningObject = new LearningObject();
-        learningObject.hruid = `${getEnvVar(envVars.UserContentPrefix)}test_multiple_choice`;
-        learningObject.language = Language.English;
-        learningObject.version = 1;
-        learningObject.title = 'Multiple choice question for testing';
-        learningObject.description = 'This multiple choice question was only created for testing purposes.';
-        learningObject.contentType = DwengoContentType.GIFT;
-        learningObject.returnValue = {
-            callbackUrl: `/learningObject/${learningObject.hruid}/submissions`,
-            callbackSchema: '["antwoord vraag 1"]',
-        };
-        learningObject.content = loadTestAsset('learning-objects/test-multiple-choice/content.txt');
-        return learningObject;
-    },
-    createAttachment: {},
-    getHTMLRendering: () => loadTestAsset('learning-objects/test-multiple-choice/rendering.txt').toString(),
-};
-
-export default example;

backend/tests/test-assets/learning-paths/learning-path-example.d.ts

@@ -1,3 +0,0 @@
-interface LearningPathExample {
-    createLearningPath: () => LearningPath;
-}

backend/tests/test-assets/learning-paths/learning-path-utils.ts

@@ -1,36 +0,0 @@
-import { Language } from '@dwengo-1/common/util/language';
-import { LearningPathTransition } from '../../../src/entities/content/learning-path-transition.entity';
-import { LearningPathNode } from '../../../src/entities/content/learning-path-node.entity';
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
-
-export function createLearningPathTransition(
-    node: LearningPathNode,
-    transitionNumber: number,
-    condition: string | null,
-    to: LearningPathNode
-): LearningPathTransition {
-    const trans = new LearningPathTransition();
-    trans.node = node;
-    trans.transitionNumber = transitionNumber;
-    trans.condition = condition || 'true';
-    trans.next = to;
-    return trans;
-}
-
-export function createLearningPathNode(
-    learningPath: LearningPath,
-    nodeNumber: number,
-    learningObjectHruid: string,
-    version: number,
-    language: Language,
-    startNode: boolean
-): LearningPathNode {
-    const node = new LearningPathNode();
-    node.learningPath = learningPath;
-    node.nodeNumber = nodeNumber;
-    node.learningObjectHruid = learningObjectHruid;
-    node.version = version;
-    node.language = language;
-    node.startNode = startNode;
-    return node;
-}

backend/tests/test-assets/learning-paths/pn-werking-example.ts

@@ -1,30 +0,0 @@
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
-import { Language } from '@dwengo-1/common/util/language';
-import { envVars, getEnvVar } from '../../../src/util/envVars';
-import { createLearningPathNode, createLearningPathTransition } from './learning-path-utils';
-import { LearningPathNode } from '../../../src/entities/content/learning-path-node.entity';
-
-function createNodes(learningPath: LearningPath): LearningPathNode[] {
-    const nodes = [
-        createLearningPathNode(learningPath, 0, 'u_pn_werkingnotebooks', 3, Language.Dutch, true),
-        createLearningPathNode(learningPath, 1, 'pn_werkingnotebooks2', 3, Language.Dutch, false),
-        createLearningPathNode(learningPath, 2, 'pn_werkingnotebooks3', 3, Language.Dutch, false),
-    ];
-    nodes[0].transitions.push(createLearningPathTransition(nodes[0], 0, 'true', nodes[1]));
-    nodes[1].transitions.push(createLearningPathTransition(nodes[1], 0, 'true', nodes[2]));
-    return nodes;
-}
-
-const example: LearningPathExample = {
-    createLearningPath: () => {
-        const path = new LearningPath();
-        path.language = Language.Dutch;
-        path.hruid = `${getEnvVar(envVars.UserContentPrefix)}pn_werking`;
-        path.title = 'Werken met notebooks';
-        path.description = 'Een korte inleiding tot Python notebooks. Hoe ga je gemakkelijk en efficiënt met de notebooks aan de slag?';
-        path.nodes = createNodes(path);
-        return path;
-    },
-};
-
-export default example;

backend/tests/test-assets/learning-paths/test-conditions-example.ts

@@ -1,80 +0,0 @@
-import { LearningPath } from '../../../src/entities/content/learning-path.entity';
-import { Language } from '@dwengo-1/common/util/language';
-import testMultipleChoiceExample from '../learning-objects/test-multiple-choice/test-multiple-choice-example';
-import { dummyLearningObject } from '../learning-objects/dummy/dummy-learning-object-example';
-import { createLearningPathNode, createLearningPathTransition } from './learning-path-utils';
-import { LearningObject } from '../../../src/entities/content/learning-object.entity';
-import { envVars, getEnvVar } from '../../../src/util/envVars';
-
-export interface ConditionTestLearningPathAndLearningObjects {
-    branchingObject: LearningObject;
-    extraExerciseObject: LearningObject;
-    finalObject: LearningObject;
-    learningPath: LearningPath;
-}
-
-export function createConditionTestLearningPathAndLearningObjects(): ConditionTestLearningPathAndLearningObjects {
-    const learningPath = new LearningPath();
-    learningPath.hruid = `${getEnvVar(envVars.UserContentPrefix)}test_conditions`;
-    learningPath.language = Language.English;
-    learningPath.title = 'Example learning path with conditional transitions';
-    learningPath.description = 'This learning path was made for the purpose of testing conditional transitions';
-
-    const branchingLearningObject = testMultipleChoiceExample.createLearningObject();
-    const extraExerciseLearningObject = dummyLearningObject(
-        'test_extra_exercise',
-        Language.English,
-        'Extra exercise (for students with difficulties)'
-    ).createLearningObject();
-    const finalLearningObject = dummyLearningObject(
-        'test_final_learning_object',
-        Language.English,
-        'Final exercise (for everyone)'
-    ).createLearningObject();
-
-    const branchingNode = createLearningPathNode(
-        learningPath,
-        0,
-        branchingLearningObject.hruid,
-        branchingLearningObject.version,
-        branchingLearningObject.language,
-        true
-    );
-    const extraExerciseNode = createLearningPathNode(
-        learningPath,
-        1,
-        extraExerciseLearningObject.hruid,
-        extraExerciseLearningObject.version,
-        extraExerciseLearningObject.language,
-        false
-    );
-    const finalNode = createLearningPathNode(
-        learningPath,
-        2,
-        finalLearningObject.hruid,
-        finalLearningObject.version,
-        finalLearningObject.language,
-        false
-    );
-
-    const transitionToExtraExercise = createLearningPathTransition(
-        branchingNode,
-        0,
-        '$[?(@[0] == 0)]', // The answer to the first question was the first one, which says that it is difficult for the student to follow along.
-        extraExerciseNode
-    );
-    const directTransitionToFinal = createLearningPathTransition(branchingNode, 1, '$[?(@[0] == 1)]', finalNode);
-    const transitionExtraExerciseToFinal = createLearningPathTransition(extraExerciseNode, 0, 'true', finalNode);
-
-    branchingNode.transitions = [transitionToExtraExercise, directTransitionToFinal];
-    extraExerciseNode.transitions = [transitionExtraExerciseToFinal];
-
-    learningPath.nodes = [branchingNode, extraExerciseNode, finalNode];
-
-    return {
-        branchingObject: branchingLearningObject,
-        finalObject: finalLearningObject,
-        extraExerciseObject: extraExerciseLearningObject,
-        learningPath: learningPath,
-    };
-}

backend/tests/test-utils/expectations.ts

@@ -1,8 +1,8 @@
 import { AssertionError } from 'node:assert';
 import { LearningObject } from '../../src/entities/content/learning-object.entity';
-import { LearningPath as LearningPathEntity } from '../../src/entities/content/learning-path.entity';
 import { expect } from 'vitest';
 import { FilteredLearningObject, LearningPath } from '@dwengo-1/common/interfaces/learning-content';
+import { RequiredEntityData } from '@mikro-orm/core';
 
 // Ignored properties because they belang for example to the class, not to the entity itself.
 const IGNORE_PROPERTIES = ['parent'];
@@ -11,65 +11,56 @@ const IGNORE_PROPERTIES = ['parent'];
  * Checks if the actual entity from the database conforms to the entity that was added previously.
  * @param actual The actual entity retrieved from the database
  * @param expected The (previously added) entity we would expect to retrieve
+ * @param propertyPrefix Prefix to append to property in error messages.
  */
-export function expectToBeCorrectEntity<T extends object>(actual: { entity: T; name?: string }, expected: { entity: T; name?: string }): void {
+export function expectToBeCorrectEntity<T extends object>(actual: T, expected: T, propertyPrefix = ''): void {
-    if (!actual.name) {
+    for (const property in expected) {
-        actual.name = 'actual';
+        if (Object.prototype.hasOwnProperty.call(expected, property)) {
-    }
+            const prefixedProperty = propertyPrefix + property;
-    if (!expected.name) {
-        expected.name = 'expected';
-    }
-    for (const property in expected.entity) {
             if (
                 property in IGNORE_PROPERTIES &&
-            expected.entity[property] !== undefined && // If we don't expect a certain value for a property, we assume it can be filled in by the database however it wants.
+                expected[property] !== undefined && // If we don't expect a certain value for a property, we assume it can be filled in by the database however it wants.
-            typeof expected.entity[property] !== 'function' // Functions obviously are not persisted via the database
+                typeof expected[property] !== 'function' // Functions obviously are not persisted via the database
             ) {
-            if (!Object.prototype.hasOwnProperty.call(actual.entity, property)) {
+                if (!Object.prototype.hasOwnProperty.call(actual, property)) {
                     throw new AssertionError({
-                    message: `${expected.name} has defined property ${property}, but ${actual.name} is missing it.`,
+                        message: `Expected property ${prefixedProperty}, but it is missing.`,
                     });
                 }
-            if (typeof expected.entity[property] === 'boolean') {
+                if (typeof expected[property] === 'boolean') {
                     // Sometimes, booleans get represented by numbers 0 and 1 in the objects actual from the database.
-                if (Boolean(expected.entity[property]) !== Boolean(actual.entity[property])) {
+                    if (Boolean(expected[property]) !== Boolean(actual[property])) {
                         throw new AssertionError({
-                        message: `${property} was ${expected.entity[property]} in ${expected.name},
+                            message: `Expected ${prefixedProperty} to be ${expected[property]},
-                        but ${actual.entity[property]} (${Boolean(expected.entity[property])}) in ${actual.name}`,
+                        but was ${actual[property]} (${Boolean(expected[property])}).`,
                         });
                     }
-            } else if (typeof expected.entity[property] !== typeof actual.entity[property]) {
+                } else if (typeof expected[property] !== typeof actual[property]) {
                     throw new AssertionError({
-                    message: `${property} has type ${typeof expected.entity[property]} in ${expected.name}, but type ${typeof actual.entity[property]} in ${actual.name}.`,
+                        message:
+                            `${prefixedProperty} was expected to have type ${typeof expected[property]},` +
+                            `but had type ${typeof actual[property]}.`,
                     });
-            } else if (typeof expected.entity[property] === 'object') {
+                } else if (typeof expected[property] === 'object') {
-                expectToBeCorrectEntity(
+                    expectToBeCorrectEntity(actual[property] as object, expected[property] as object, property);
-                    {
-                        name: actual.name + '.' + property,
-                        entity: actual.entity[property] as object,
-                    },
-                    {
-                        name: expected.name + '.' + property,
-                        entity: expected.entity[property] as object,
-                    }
-                );
                 } else {
-                if (expected.entity[property] !== actual.entity[property]) {
+                    if (expected[property] !== actual[property]) {
                         throw new AssertionError({
-                        message: `${property} was ${expected.entity[property]} in ${expected.name}, but ${actual.entity[property]} in ${actual.name}`,
+                            message: `${prefixedProperty} was expected to be ${expected[property]}, ` + `but was ${actual[property]}.`,
                         });
                     }
                 }
             }
         }
     }
+}
 
 /**
  * Checks that filtered is the correct representation of original as FilteredLearningObject.
  * @param filtered the representation as FilteredLearningObject
- * @param original the original entity added to the database
+ * @param original the data of the entity in the database that was filtered.
  */
-export function expectToBeCorrectFilteredLearningObject(filtered: FilteredLearningObject, original: LearningObject): void {
+export function expectToBeCorrectFilteredLearningObject(filtered: FilteredLearningObject, original: RequiredEntityData<LearningObject>): void {
     expect(filtered.uuid).toEqual(original.uuid);
     expect(filtered.version).toEqual(original.version);
     expect(filtered.language).toEqual(original.language);
@@ -97,54 +88,55 @@ export function expectToBeCorrectFilteredLearningObject(filtered: FilteredLearni
  * is a correct representation of the given learning path entity.
  *
  * @param learningPath The learning path returned by the retriever, service or endpoint
- * @param expectedEntity The expected entity
+ * @param expected The learning path that should have been returned.
- * @param learningObjectsOnPath The learning objects on LearningPath. Necessary since some information in
- *                              the learning path returned from the API endpoint
  */
-export function expectToBeCorrectLearningPath(
+export function expectToBeCorrectLearningPath(learningPath: LearningPath, expected: LearningPath): void {
-    learningPath: LearningPath,
+    expect(learningPath.hruid).toEqual(expected.hruid);
-    expectedEntity: LearningPathEntity,
+    expect(learningPath.language).toEqual(expected.language);
-    learningObjectsOnPath: FilteredLearningObject[]
+    expect(learningPath.description).toEqual(expected.description);
-): void {
+    expect(learningPath.title).toEqual(expected.title);
-    expect(learningPath.hruid).toEqual(expectedEntity.hruid);
-    expect(learningPath.language).toEqual(expectedEntity.language);
-    expect(learningPath.description).toEqual(expectedEntity.description);
-    expect(learningPath.title).toEqual(expectedEntity.title);
 
-    const keywords = new Set(learningObjectsOnPath.flatMap((it) => it.keywords || []));
+    expect(new Set(learningPath.keywords.split(' '))).toEqual(new Set(learningPath.keywords.split(' ')));
-    expect(new Set(learningPath.keywords.split(' '))).toEqual(keywords);
 
-    const targetAges = new Set(learningObjectsOnPath.flatMap((it) => it.targetAges || []));
+    expect(new Set(learningPath.target_ages)).toEqual(new Set(expected.target_ages));
-    expect(new Set(learningPath.target_ages)).toEqual(targetAges);
+    expect(learningPath.min_age).toEqual(Math.min(...expected.target_ages));
-    expect(learningPath.min_age).toEqual(Math.min(...targetAges));
+    expect(learningPath.max_age).toEqual(Math.max(...expected.target_ages));
-    expect(learningPath.max_age).toEqual(Math.max(...targetAges));
 
-    expect(learningPath.num_nodes).toEqual(expectedEntity.nodes.length);
+    expect(learningPath.num_nodes).toEqual(expected.nodes.length);
-    expect(learningPath.image || null).toEqual(expectedEntity.image);
+    expect(learningPath.image ?? null).toEqual(expected.image ?? null);
 
-    const expectedLearningPathNodes = new Map(
+    for (const node of expected.nodes) {
-        expectedEntity.nodes.map((node) => [
+        const correspondingNode = learningPath.nodes.find(
-            { learningObjectHruid: node.learningObjectHruid, language: node.language, version: node.version },
+            (it) => node.learningobject_hruid === it.learningobject_hruid && node.language === it.language && node.version === it.version
-            { startNode: node.startNode, transitions: node.transitions },
-        ])
         );
+        expect(correspondingNode).toBeTruthy();
+        expect(Boolean(correspondingNode!.start_node)).toEqual(Boolean(node.start_node));
 
-    for (const node of learningPath.nodes) {
+        for (const transition of node.transitions) {
-        const nodeKey = {
+            const correspondingTransition = correspondingNode!.transitions.find(
-            learningObjectHruid: node.learningobject_hruid,
+                (it) =>
-            language: node.language,
+                    it.next.hruid === transition.next.hruid &&
-            version: node.version,
+                    it.next.language === transition.next.language &&
-        };
+                    it.next.version === transition.next.version
-        expect(expectedLearningPathNodes.keys()).toContainEqual(nodeKey);
-        const expectedNode = [...expectedLearningPathNodes.entries()].find(
-            ([key, _]) => key.learningObjectHruid === nodeKey.learningObjectHruid && key.language === node.language && key.version === node.version
-        )![1];
-        expect(node.start_node).toEqual(expectedNode.startNode);
-
-        expect(new Set(node.transitions.map((it) => it.next.hruid))).toEqual(
-            new Set(expectedNode.transitions.map((it) => it.next.learningObjectHruid))
             );
-        expect(new Set(node.transitions.map((it) => it.next.language))).toEqual(new Set(expectedNode.transitions.map((it) => it.next.language)));
+            expect(correspondingTransition).toBeTruthy();
-        expect(new Set(node.transitions.map((it) => it.next.version))).toEqual(new Set(expectedNode.transitions.map((it) => it.next.version)));
         }
     }
+}
+
+/**
+ * Expect that the given result is a singleton list with exactly the given element.
+ */
+export function expectToHaveFoundPrecisely<T extends object>(expected: T, result: T[]): void {
+    expect(result).toHaveProperty('length');
+    expect(result.length).toBe(1);
+    expectToBeCorrectEntity(result[0], expected);
+}
+
+/**
+ * Expect that the given result is an empty list.
+ */
+export function expectToHaveFoundNothing<T>(result: T[]): void {
+    expect(result).toHaveProperty('length');
+    expect(result.length).toBe(0);
+}

backend/tests/test-utils/get-html-rendering.ts

@@ -0,0 +1,10 @@
+import { RequiredEntityData } from '@mikro-orm/core';
+import { loadTestAsset } from './load-test-asset';
+import { LearningObject } from '../../src/entities/content/learning-object.entity';
+import { envVars, getEnvVar } from '../../src/util/envVars';
+
+export function getHtmlRenderingForTestLearningObject(learningObject: RequiredEntityData<LearningObject>): string {
+    const userPrefix = getEnvVar(envVars.UserContentPrefix);
+    const cleanedHruid = learningObject.hruid.startsWith(userPrefix) ? learningObject.hruid.substring(userPrefix.length) : learningObject.hruid;
+    return loadTestAsset(`/content/learning-object-resources/${cleanedHruid}/rendering.txt`).toString();
+}

backend/tests/test-utils/load-test-asset.ts

@@ -1,10 +1,14 @@
 import fs from 'fs';
 import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const fileName = fileURLToPath(import.meta.url);
+const dirName = path.dirname(fileName);
 
 /**
  * Load the asset at the given path.
  * @param relPath Path of the asset relative to the test-assets folder.
  */
 export function loadTestAsset(relPath: string): Buffer {
-    return fs.readFileSync(path.resolve(__dirname, `../test-assets/${relPath}`));
+    return fs.readFileSync(path.resolve(dirName, `../test_assets/${relPath}`));
 }

backend/tests/test_assets/assignments/assignments.testdata.ts

@@ -2,9 +2,11 @@ import { EntityManager } from '@mikro-orm/core';
 import { Assignment } from '../../../src/entities/assignments/assignment.entity';
 import { Class } from '../../../src/entities/classes/class.entity';
 import { Language } from '@dwengo-1/common/util/language';
+import { testLearningPathWithConditions } from '../content/learning-paths.testdata';
+import { getClassWithTestleerlingAndTestleerkracht } from '../classes/classes.testdata';
 
 export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assignment[] {
-    const assignment01 = em.create(Assignment, {
+    assignment01 = em.create(Assignment, {
         id: 21000,
         within: classes[0],
         title: 'dire straits',
@@ -14,7 +16,7 @@ export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assign
         groups: [],
     });
 
-    const assignment02 = em.create(Assignment, {
+    assignment02 = em.create(Assignment, {
         id: 21001,
         within: classes[1],
         title: 'tool',
@@ -24,7 +26,7 @@ export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assign
         groups: [],
     });
 
-    const assignment03 = em.create(Assignment, {
+    assignment03 = em.create(Assignment, {
         id: 21002,
         within: classes[0],
         title: 'delete',
@@ -34,7 +36,7 @@ export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assign
         groups: [],
     });
 
-    const assignment04 = em.create(Assignment, {
+    assignment04 = em.create(Assignment, {
         id: 21003,
         within: classes[0],
         title: 'another assignment',
@@ -44,5 +46,41 @@ export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assign
         groups: [],
     });
 
-    return [assignment01, assignment02, assignment03, assignment04];
+    conditionalPathAssignment = em.create(Assignment, {
+        within: getClassWithTestleerlingAndTestleerkracht(),
+        id: 1,
+        title: 'Assignment: Conditional Learning Path',
+        description: 'You have to do the testing learning path with a condition.',
+        learningPathHruid: testLearningPathWithConditions.hruid,
+        learningPathLanguage: testLearningPathWithConditions.language as Language,
+        groups: [],
+    });
+
+    return [assignment01, assignment02, assignment03, assignment04, conditionalPathAssignment];
+}
+
+let assignment01: Assignment;
+let assignment02: Assignment;
+let assignment03: Assignment;
+let assignment04: Assignment;
+let conditionalPathAssignment: Assignment;
+
+export function getAssignment01(): Assignment {
+    return assignment01;
+}
+
+export function getAssignment02(): Assignment {
+    return assignment02;
+}
+
+export function getAssignment03(): Assignment {
+    return assignment03;
+}
+
+export function getAssignment04(): Assignment {
+    return assignment04;
+}
+
+export function getConditionalPathAssignment(): Assignment {
+    return conditionalPathAssignment;
 }

backend/tests/test_assets/assignments/groups.testdata.ts

@@ -2,13 +2,15 @@ import { EntityManager } from '@mikro-orm/core';
 import { Group } from '../../../src/entities/assignments/group.entity';
 import { Assignment } from '../../../src/entities/assignments/assignment.entity';
 import { Student } from '../../../src/entities/users/student.entity';
+import { getConditionalPathAssignment } from './assignments.testdata';
+import { getTestleerling1 } from '../users/students.testdata';
 
 export function makeTestGroups(em: EntityManager, students: Student[], assignments: Assignment[]): Group[] {
     /*
      * Group #1 for Assignment #1 in class 'id01'
      * => Assigned to do learning path 'id02'
      */
-    const group01 = em.create(Group, {
+    group01 = em.create(Group, {
         assignment: assignments[0],
         groupNumber: 21001,
         members: students.slice(0, 2),
@@ -18,7 +20,7 @@ export function makeTestGroups(em: EntityManager, students: Student[], assignmen
      * Group #2 for Assignment #1 in class 'id01'
      * => Assigned to do learning path 'id02'
      */
-    const group02 = em.create(Group, {
+    group02 = em.create(Group, {
         assignment: assignments[0],
         groupNumber: 21002,
         members: students.slice(2, 4),
@@ -28,7 +30,7 @@ export function makeTestGroups(em: EntityManager, students: Student[], assignmen
      * Group #3 for Assignment #1 in class 'id01'
      * => Assigned to do learning path 'id02'
      */
-    const group03 = em.create(Group, {
+    group03 = em.create(Group, {
         assignment: assignments[0],
         groupNumber: 21003,
         members: students.slice(4, 6),
@@ -38,7 +40,7 @@ export function makeTestGroups(em: EntityManager, students: Student[], assignmen
      * Group #4 for Assignment #2 in class 'id02'
      * => Assigned to do learning path 'id01'
      */
-    const group04 = em.create(Group, {
+    group04 = em.create(Group, {
         assignment: assignments[1],
         groupNumber: 21004,
         members: students.slice(3, 4),
@@ -48,11 +50,51 @@ export function makeTestGroups(em: EntityManager, students: Student[], assignmen
      * Group #5 for Assignment #4 in class 'id01'
      * => Assigned to do learning path 'id01'
      */
-    const group05 = em.create(Group, {
+    group05 = em.create(Group, {
         assignment: assignments[3],
         groupNumber: 21001,
         members: students.slice(0, 2),
     });
 
-    return [group01, group02, group03, group04, group05];
+    /**
+     * Group 1 for the assignment of the testing learning path with conditions.
+     */
+    group1ConditionalLearningPath = em.create(Group, {
+        assignment: getConditionalPathAssignment(),
+        groupNumber: 1,
+        members: [getTestleerling1()],
+    });
+
+    return [group01, group02, group03, group04, group05, group1ConditionalLearningPath];
+}
+
+let group01: Group;
+let group02: Group;
+let group03: Group;
+let group04: Group;
+let group05: Group;
+let group1ConditionalLearningPath: Group;
+
+export function getTestGroup01(): Group {
+    return group01;
+}
+
+export function getTestGroup02(): Group {
+    return group02;
+}
+
+export function getTestGroup03(): Group {
+    return group03;
+}
+
+export function getTestGroup04(): Group {
+    return group04;
+}
+
+export function getTestGroup05(): Group {
+    return group05;
+}
+
+export function getGroup1ConditionalLearningPath(): Group {
+    return group1ConditionalLearningPath;
 }

backend/tests/test_assets/classes/classes.testdata.ts

@@ -2,12 +2,14 @@ import { EntityManager } from '@mikro-orm/core';
 import { Class } from '../../../src/entities/classes/class.entity';
 import { Student } from '../../../src/entities/users/student.entity';
 import { Teacher } from '../../../src/entities/users/teacher.entity';
+import { getTestleerkracht1 } from '../users/teachers.testdata';
+import { getTestleerling1 } from '../users/students.testdata';
 
 export function makeTestClasses(em: EntityManager, students: Student[], teachers: Teacher[]): Class[] {
     const studentsClass01 = students.slice(0, 8);
     const teacherClass01: Teacher[] = teachers.slice(4, 5);
 
-    const class01 = em.create(Class, {
+    class01 = em.create(Class, {
         classId: '8764b861-90a6-42e5-9732-c0d9eb2f55f9',
         displayName: 'class01',
         teachers: teacherClass01,
@@ -17,7 +19,7 @@ export function makeTestClasses(em: EntityManager, students: Student[], teachers
     const studentsClass02: Student[] = students.slice(0, 2).concat(students.slice(3, 4));
     const teacherClass02: Teacher[] = teachers.slice(1, 2);
 
-    const class02 = em.create(Class, {
+    class02 = em.create(Class, {
         classId: '34d484a1-295f-4e9f-bfdc-3e7a23d86a89',
         displayName: 'class02',
         teachers: teacherClass02,
@@ -27,7 +29,7 @@ export function makeTestClasses(em: EntityManager, students: Student[], teachers
     const studentsClass03: Student[] = students.slice(1, 4);
     const teacherClass03: Teacher[] = teachers.slice(2, 3);
 
-    const class03 = em.create(Class, {
+    class03 = em.create(Class, {
         classId: '80dcc3e0-1811-4091-9361-42c0eee91cfa',
         displayName: 'class03',
         teachers: teacherClass03,
@@ -37,12 +39,45 @@ export function makeTestClasses(em: EntityManager, students: Student[], teachers
     const studentsClass04: Student[] = students.slice(0, 2);
     const teacherClass04: Teacher[] = teachers.slice(2, 3);
 
-    const class04 = em.create(Class, {
+    class04 = em.create(Class, {
         classId: '33d03536-83b8-4880-9982-9bbf2f908ddf',
         displayName: 'class04',
         teachers: teacherClass04,
         students: studentsClass04,
     });
 
-    return [class01, class02, class03, class04];
+    classWithTestleerlingAndTestleerkracht = em.create(Class, {
+        classId: 'a75298b5-18aa-471d-8eeb-5d77eb989393',
+        displayName: 'Testklasse',
+        teachers: [getTestleerkracht1()],
+        students: [getTestleerling1()],
+    });
+
+    return [class01, class02, class03, class04, classWithTestleerlingAndTestleerkracht];
+}
+
+let class01: Class;
+let class02: Class;
+let class03: Class;
+let class04: Class;
+let classWithTestleerlingAndTestleerkracht: Class;
+
+export function getClass01(): Class {
+    return class01;
+}
+
+export function getClass02(): Class {
+    return class02;
+}
+
+export function getClass03(): Class {
+    return class03;
+}
+
+export function getClass04(): Class {
+    return class04;
+}
+
+export function getClassWithTestleerlingAndTestleerkracht(): Class {
+    return classWithTestleerlingAndTestleerkracht;
 }

backend/tests/test_assets/content/learning-object-resources/test_essay_question/content.txt

@@ -0,0 +1,2 @@
+::Reflection::
+Reflect on this learning path. What have you learned today? {}

backend/tests/test_assets/content/learning-object-resources/test_essay_question/rendering.txt

@@ -0,0 +1,7 @@
+<div class="learning-object-gift">
+    <div id="gift-q1" class="gift-question gift-question-type-Essay">
+        <h2 id="gift-q1-title" class="gift-title">Reflection</h2>
+        <p id="gift-q1-stem" class="gift-stem">Reflect on this learning path. What have you learned today?</p>
+        <textarea id="gift-q1-answer" class="gift-essay-answer"></textarea>
+    </div>
+</div>

backend/tests/test_assets/content/learning-object-resources/test_multiple_choice/content.txt

@@ -1,5 +1,5 @@
-::MC basic::
+::Self-evaluation::
-Are you following along well with the class?  {
+Are you following along well?  {
 	~No, it's very difficult to follow along.
     =Yes, no problem!
 }

backend/tests/test_assets/content/learning-object-resources/test_multiple_choice/rendering.txt

@@ -1,14 +1,14 @@
 <div class="learning-object-gift">
-    <div id="gift-q1" class="gift-question">
+    <div id="gift-q1" class="gift-question gift-question-type-MC">
-        <h2 id="gift-q1-title" class="gift-title">MC basic</h2>
+        <h2 id="gift-q1-title" class="gift-title">Self-evaluation</h2>
-        <p id="gift-q1-stem" class="gift-stem">Are you following along well with the class?</p>
+        <p id="gift-q1-stem" class="gift-stem">Are you following along well?</p>
         <div class="gift-choice-div">
             <input value="0" name="gift-q1-choices" id="gift-q1-choice-0" type="radio">
-            <label for="gift-q1-choice-0">[object Object]</label>
+            <label for="gift-q1-choice-0">No, it's very difficult to follow along.</label>
         </div>
         <div class="gift-choice-div">
             <input value="1" name="gift-q1-choices" id="gift-q1-choice-1" type="radio">
-            <label for="gift-q1-choice-1">[object Object]</label>
+            <label for="gift-q1-choice-1">Yes, no problem!</label>
         </div>
     </div>
 </div>

backend/tests/test_assets/content/learning-objects.testdata.ts

@@ -1,16 +1,49 @@
-import { EntityManager } from '@mikro-orm/core';
+import { EntityManager, RequiredEntityData } from '@mikro-orm/core';
 import { LearningObject } from '../../../src/entities/content/learning-object.entity';
 import { Language } from '@dwengo-1/common/util/language';
 import { DwengoContentType } from '../../../src/services/learning-objects/processing/content-type';
 import { ReturnValue } from '../../../src/entities/content/return-value.entity';
+import { envVars, getEnvVar } from '../../../src/util/envVars';
+import { loadTestAsset } from '../../test-utils/load-test-asset';
+import { v4 } from 'uuid';
 
 export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     const returnValue: ReturnValue = new ReturnValue();
     returnValue.callbackSchema = '';
     returnValue.callbackUrl = '';
 
-    const learningObject01 = em.create(LearningObject, {
+    const learningObject01 = em.create(LearningObject, testLearningObject01);
-        hruid: 'id01',
+    const learningObject02 = em.create(LearningObject, testLearningObject02);
+    const learningObject03 = em.create(LearningObject, testLearningObject03);
+    const learningObject04 = em.create(LearningObject, testLearningObject04);
+    const learningObject05 = em.create(LearningObject, testLearningObject05);
+
+    const learningObjectMultipleChoice = em.create(LearningObject, testLearningObjectMultipleChoice);
+    const learningObjectEssayQuestion = em.create(LearningObject, testLearningObjectEssayQuestion);
+
+    const learningObjectPnNotebooks = em.create(LearningObject, testLearningObjectPnNotebooks);
+
+    return [
+        learningObject01,
+        learningObject02,
+        learningObject03,
+        learningObject04,
+        learningObject05,
+        learningObjectMultipleChoice,
+        learningObjectEssayQuestion,
+        learningObjectPnNotebooks,
+    ];
+}
+
+export function createReturnValue(): ReturnValue {
+    const returnValue: ReturnValue = new ReturnValue();
+    returnValue.callbackSchema = '[]';
+    returnValue.callbackUrl = '%SUBMISSION%';
+    return returnValue;
+}
+
+export const testLearningObject01: RequiredEntityData<LearningObject> = {
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id01`,
     language: Language.English,
     version: 1,
     admins: [],
@@ -18,21 +51,23 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     description: 'debute',
     contentType: DwengoContentType.TEXT_MARKDOWN,
     keywords: [],
+    uuid: v4(),
+    targetAges: [16, 17, 18],
     teacherExclusive: false,
     skosConcepts: [],
     educationalGoals: [],
     copyright: '',
     license: '',
     estimatedTime: 45,
-        returnValue: returnValue,
+    returnValue: createReturnValue(),
     available: true,
     contentLocation: '',
     attachments: [],
     content: Buffer.from("there's a shadow just behind me, shrouding every step i take, making every promise empty pointing every finger at me"),
-    });
+};
 
-    const learningObject02 = em.create(LearningObject, {
+export const testLearningObject02: RequiredEntityData<LearningObject> = {
-        hruid: 'id02',
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id02`,
     language: Language.English,
     version: 1,
     admins: [],
@@ -46,17 +81,17 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     copyright: '',
     license: '',
     estimatedTime: 80,
-        returnValue: returnValue,
+    returnValue: createReturnValue(),
     available: true,
     contentLocation: '',
     attachments: [],
     content: Buffer.from(
         "I've been crawling on my belly clearing out what could've been I've been wallowing in my own confused and insecure delusions"
     ),
-    });
+};
 
-    const learningObject03 = em.create(LearningObject, {
+export const testLearningObject03: RequiredEntityData<LearningObject> = {
-        hruid: 'id03',
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id03`,
     language: Language.English,
     version: 1,
     admins: [],
@@ -70,7 +105,7 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     copyright: '',
     license: '',
     estimatedTime: 55,
-        returnValue: returnValue,
+    returnValue: createReturnValue(),
     available: true,
     contentLocation: '',
     attachments: [],
@@ -80,10 +115,10 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
          come back and see me later next patient please \
          send in another victim of industrial disease'
     ),
-    });
+};
 
-    const learningObject04 = em.create(LearningObject, {
+export const testLearningObject04: RequiredEntityData<LearningObject> = {
-        hruid: 'id04',
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id04`,
     language: Language.English,
     version: 1,
     admins: [],
@@ -97,7 +132,7 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     copyright: '',
     license: '',
     estimatedTime: 55,
-        returnValue: returnValue,
+    returnValue: createReturnValue(),
     available: true,
     contentLocation: '',
     attachments: [],
@@ -107,10 +142,10 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
          I had the one-arm bandit fever \
          There was an arrow through my heart and my soul'
     ),
-    });
+};
 
-    const learningObject05 = em.create(LearningObject, {
+export const testLearningObject05: RequiredEntityData<LearningObject> = {
-        hruid: 'id05',
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id05`,
     language: Language.English,
     version: 1,
     admins: [],
@@ -124,12 +159,103 @@ export function makeTestLearningObjects(em: EntityManager): LearningObject[] {
     copyright: '',
     license: '',
     estimatedTime: 55,
-        returnValue: returnValue,
+    returnValue: createReturnValue(),
     available: true,
     contentLocation: '',
     attachments: [],
     content: Buffer.from('calling Elvis, is anybody home, calling elvis, I am here all alone'),
-    });
+};
 
-    return [learningObject01, learningObject02, learningObject03, learningObject04, learningObject05];
+export const testLearningObjectMultipleChoice: RequiredEntityData<LearningObject> = {
-}
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}test_multiple_choice`,
+    language: Language.English,
+    version: 1,
+    title: 'Self-evaluation',
+    description: "Time to evaluate how well you understand what you've learned so far.",
+    keywords: ['test'],
+    teacherExclusive: false,
+    skosConcepts: [],
+    educationalGoals: [],
+    copyright: 'Groep 1 SEL-2 2025',
+    license: 'CC0',
+    difficulty: 1,
+    estimatedTime: 1,
+    attachments: [],
+    available: true,
+    targetAges: [10, 11, 12, 13, 14, 15, 16, 17, 18],
+    admins: [],
+    contentType: DwengoContentType.GIFT,
+    content: loadTestAsset('content/learning-object-resources/test_multiple_choice/content.txt'),
+    returnValue: {
+        callbackUrl: `%SUBMISSION%`,
+        callbackSchema: '["antwoord vraag 1"]',
+    },
+};
+
+export const testLearningObjectEssayQuestion: RequiredEntityData<LearningObject> = {
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}test_essay_question`,
+    language: Language.English,
+    version: 1,
+    title: 'Reflection',
+    description: 'Reflect on your learning progress.',
+    keywords: ['test'],
+    teacherExclusive: false,
+    skosConcepts: [],
+    educationalGoals: [],
+    copyright: 'Groep 1 SEL-2 2025',
+    license: 'CC0',
+    difficulty: 1,
+    estimatedTime: 1,
+    attachments: [],
+    available: true,
+    targetAges: [10, 11, 12, 13, 14, 15, 16, 17, 18],
+    admins: [],
+    contentType: DwengoContentType.GIFT,
+    content: loadTestAsset('content/learning-object-resources/test_essay_question/content.txt'),
+    returnValue: {
+        callbackUrl: `%SUBMISSION%`,
+        callbackSchema: '["antwoord vraag 1"]',
+    },
+};
+
+export const testLearningObjectPnNotebooks: RequiredEntityData<LearningObject> = {
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}pn_werkingnotebooks`,
+    version: 3,
+    language: Language.Dutch,
+    title: 'Werken met notebooks',
+    description: 'Leren werken met notebooks',
+    keywords: ['Python', 'KIKS', 'Wiskunde', 'STEM', 'AI'],
+    targetAges: [14, 15, 16, 17, 18],
+    admins: [],
+    copyright: 'dwengo',
+    educationalGoals: [],
+    license: 'dwengo',
+    contentType: DwengoContentType.TEXT_MARKDOWN,
+    difficulty: 3,
+    estimatedTime: 10,
+    uuid: '2adf9929-b424-4650-bf60-186f730d38ab',
+    teacherExclusive: false,
+    skosConcepts: [
+        'http://ilearn.ilabt.imec.be/vocab/curr1/s-vaktaal',
+        'http://ilearn.ilabt.imec.be/vocab/curr1/s-digitale-media-en-toepassingen',
+        'http://ilearn.ilabt.imec.be/vocab/curr1/s-computers-en-systemen',
+    ],
+    attachments: [
+        {
+            name: 'dwengo.png',
+            mimeType: 'image/png',
+            content: loadTestAsset('/content/learning-object-resources/pn_werkingnotebooks/dwengo.png'),
+        },
+        {
+            name: 'Knop.png',
+            mimeType: 'image/png',
+            content: loadTestAsset('/content/learning-object-resources/pn_werkingnotebooks/Knop.png'),
+        },
+    ],
+    available: false,
+    content: loadTestAsset('/content/learning-object-resources/pn_werkingnotebooks/content.md'),
+    returnValue: {
+        callbackUrl: '%SUBMISSION%',
+        callbackSchema: '[]',
+    },
+};

backend/tests/test_assets/content/learning-paths.testdata.ts

@@ -1,100 +1,236 @@
 import { EntityManager } from '@mikro-orm/core';
 import { LearningPath } from '../../../src/entities/content/learning-path.entity';
 import { Language } from '@dwengo-1/common/util/language';
-import { LearningPathTransition } from '../../../src/entities/content/learning-path-transition.entity';
+import { mapToLearningPath } from '../../../src/services/learning-paths/learning-path-service';
-import { LearningPathNode } from '../../../src/entities/content/learning-path-node.entity';
+import { envVars, getEnvVar } from '../../../src/util/envVars';
+import { LearningPath as LearningPathDTO } from '@dwengo-1/common/interfaces/learning-content';
+import {
+    testLearningObject01,
+    testLearningObject02,
+    testLearningObject03,
+    testLearningObject04,
+    testLearningObject05,
+    testLearningObjectEssayQuestion,
+    testLearningObjectMultipleChoice,
+    testLearningObjectPnNotebooks,
+} from './learning-objects.testdata';
 
-export function makeTestLearningPaths(em: EntityManager): LearningPath[] {
+export function makeTestLearningPaths(_em: EntityManager): LearningPath[] {
-    const learningPathNode01: LearningPathNode = new LearningPathNode();
+    const learningPath01 = mapToLearningPath(testLearningPath01, []);
-    const learningPathNode02: LearningPathNode = new LearningPathNode();
+    const learningPath02 = mapToLearningPath(testLearningPath02, []);
-    const learningPathNode03: LearningPathNode = new LearningPathNode();
-    const learningPathNode04: LearningPathNode = new LearningPathNode();
-    const learningPathNode05: LearningPathNode = new LearningPathNode();
 
-    const transitions01: LearningPathTransition = new LearningPathTransition();
+    const partiallyDatabasePartiallyDwengoApiLearningPath = mapToLearningPath(testPartiallyDatabaseAndPartiallyDwengoApiLearningPath, []);
-    const transitions02: LearningPathTransition = new LearningPathTransition();
+    const learningPathWithConditions = mapToLearningPath(testLearningPathWithConditions, []);
-    const transitions03: LearningPathTransition = new LearningPathTransition();
-    const transitions04: LearningPathTransition = new LearningPathTransition();
-    const transitions05: LearningPathTransition = new LearningPathTransition();
 
-    transitions01.condition = 'true';
+    return [learningPath01, learningPath02, partiallyDatabasePartiallyDwengoApiLearningPath, learningPathWithConditions];
-    transitions01.next = learningPathNode02;
+}
 
-    transitions02.condition = 'true';
+const nowString = new Date().toString();
-    transitions02.next = learningPathNode02;
 
-    transitions03.condition = 'true';
+export const testLearningPath01: LearningPathDTO = {
-    transitions03.next = learningPathNode04;
+    keywords: 'test',
-
+    target_ages: [16, 17, 18],
-    transitions04.condition = 'true';
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id01`,
-    transitions04.next = learningPathNode05;
-
-    transitions05.condition = 'true';
-    transitions05.next = learningPathNode05;
-
-    learningPathNode01.instruction = '';
-    learningPathNode01.language = Language.English;
-    learningPathNode01.learningObjectHruid = 'id01';
-    learningPathNode01.startNode = true;
-    learningPathNode01.transitions = [transitions01];
-    learningPathNode01.version = 1;
-
-    learningPathNode02.instruction = '';
-    learningPathNode02.language = Language.English;
-    learningPathNode02.learningObjectHruid = 'id02';
-    learningPathNode02.startNode = false;
-    learningPathNode02.transitions = [transitions02];
-    learningPathNode02.version = 1;
-
-    learningPathNode03.instruction = '';
-    learningPathNode03.language = Language.English;
-    learningPathNode03.learningObjectHruid = 'id03';
-    learningPathNode03.startNode = true;
-    learningPathNode03.transitions = [transitions03];
-    learningPathNode03.version = 1;
-
-    learningPathNode04.instruction = '';
-    learningPathNode04.language = Language.English;
-    learningPathNode04.learningObjectHruid = 'id04';
-    learningPathNode04.startNode = false;
-    learningPathNode04.transitions = [transitions04];
-    learningPathNode04.version = 1;
-
-    learningPathNode05.instruction = '';
-    learningPathNode05.language = Language.English;
-    learningPathNode05.learningObjectHruid = 'id05';
-    learningPathNode05.startNode = false;
-    learningPathNode05.transitions = [transitions05];
-    learningPathNode05.version = 1;
-
-    const nodes01: LearningPathNode[] = [
-        // LearningPathNode01,
-        // LearningPathNode02,
-    ];
-    const learningPath01 = em.create(LearningPath, {
-        hruid: 'id01',
     language: Language.English,
-        admins: [],
     title: 'repertoire Tool',
     description: 'all about Tool',
-        image: null,
+    nodes: [
-        nodes: nodes01,
+        {
-    });
+            learningobject_hruid: testLearningObject01.hruid,
+            language: testLearningObject01.language,
+            version: testLearningObject01.version,
+            start_node: true,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    next: {
+                        hruid: testLearningObject02.hruid,
+                        language: testLearningObject02.language,
+                        version: testLearningObject02.version,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: testLearningObject02.hruid,
+            language: testLearningObject02.language,
+            version: testLearningObject02.version,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [],
+        },
+    ],
+};
 
-    const nodes02: LearningPathNode[] = [
+export const testLearningPath02: LearningPathDTO = {
-        // LearningPathNode03,
+    keywords: 'test',
-        // LearningPathNode04,
+    target_ages: [16, 17, 18],
-        // LearningPathNode05,
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}id02`,
-    ];
-    const learningPath02 = em.create(LearningPath, {
-        hruid: 'id02',
     language: Language.English,
-        admins: [],
     title: 'repertoire Dire Straits',
     description: 'all about Dire Straits',
-        image: null,
+    nodes: [
-        nodes: nodes02,
+        {
-    });
+            learningobject_hruid: testLearningObject03.hruid,
+            language: testLearningObject03.language,
+            version: testLearningObject03.version,
+            start_node: true,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    next: {
+                        hruid: testLearningObject04.hruid,
+                        language: testLearningObject04.language,
+                        version: testLearningObject04.version,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: testLearningObject04.hruid,
+            language: testLearningObject04.language,
+            version: testLearningObject04.version,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    next: {
+                        hruid: testLearningObject05.hruid,
+                        language: testLearningObject05.language,
+                        version: testLearningObject05.version,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: testLearningObject05.hruid,
+            language: testLearningObject05.language,
+            version: testLearningObject05.version,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [],
+        },
+    ],
+};
 
-    return [learningPath01, learningPath02];
+export const testPartiallyDatabaseAndPartiallyDwengoApiLearningPath: LearningPathDTO = {
-}
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}pn_werking`,
+    title: 'Werken met notebooks',
+    language: Language.Dutch,
+    description: 'Een korte inleiding tot Python notebooks. Hoe ga je gemakkelijk en efficiënt met de notebooks aan de slag?',
+    keywords: 'Python KIKS Wiskunde STEM AI',
+    target_ages: [14, 15, 16, 17, 18],
+    nodes: [
+        {
+            learningobject_hruid: testLearningObjectPnNotebooks.hruid,
+            language: testLearningObjectPnNotebooks.language,
+            version: testLearningObjectPnNotebooks.version,
+            start_node: true,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    default: true,
+                    next: {
+                        hruid: 'pn_werkingnotebooks2',
+                        language: Language.Dutch,
+                        version: 3,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: 'pn_werkingnotebooks2',
+            language: Language.Dutch,
+            version: 3,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    default: true,
+                    next: {
+                        hruid: 'pn_werkingnotebooks3',
+                        language: Language.Dutch,
+                        version: 3,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: 'pn_werkingnotebooks3',
+            language: Language.Dutch,
+            version: 3,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [],
+        },
+    ],
+};
+
+export const testLearningPathWithConditions: LearningPathDTO = {
+    hruid: `${getEnvVar(envVars.UserContentPrefix)}test_conditions`,
+    language: Language.English,
+    title: 'Example learning path with conditional transitions',
+    description: 'This learning path was made for the purpose of testing conditional transitions',
+    keywords: 'test',
+    target_ages: [10, 11, 12, 13, 14, 15, 16, 17, 18],
+    nodes: [
+        {
+            learningobject_hruid: testLearningObjectMultipleChoice.hruid,
+            language: testLearningObjectMultipleChoice.language,
+            version: testLearningObjectMultipleChoice.version,
+            start_node: true,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    // If the answer to the first question was the first one (It's difficult to follow along):
+                    condition: '$[?(@[0] == 0)]',
+                    next: {
+                        //... we let the student do an extra exercise.
+                        hruid: testLearningObject01.hruid,
+                        language: testLearningObject01.language,
+                        version: testLearningObject01.version,
+                    },
+                },
+                {
+                    // If the answer to the first question was the second one (I can follow along):
+                    condition: '$[?(@[0] == 1)]',
+                    next: {
+                        //... we let the student right through to the final question.
+                        hruid: testLearningObjectEssayQuestion.hruid,
+                        language: testLearningObjectEssayQuestion.language,
+                        version: testLearningObjectEssayQuestion.version,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: testLearningObject01.hruid,
+            language: testLearningObject01.language,
+            version: testLearningObject01.version,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [
+                {
+                    default: true,
+                    next: {
+                        hruid: testLearningObjectEssayQuestion.hruid,
+                        language: testLearningObjectEssayQuestion.language,
+                        version: testLearningObjectEssayQuestion.version,
+                    },
+                },
+            ],
+        },
+        {
+            learningobject_hruid: testLearningObjectEssayQuestion.hruid,
+            language: testLearningObjectEssayQuestion.language,
+            version: testLearningObjectEssayQuestion.version,
+            created_at: nowString,
+            updatedAt: nowString,
+            transitions: [],
+        },
+    ],
+};

backend/tests/test_assets/users/students.testdata.ts

@@ -15,7 +15,14 @@ export const TEST_STUDENTS = [
     { username: 'testleerling1', firstName: 'Gerald', lastName: 'Schmittinger' },
 ];
 
+let testStudents: Student[];
+
 // 🏗️ Functie die ORM entities maakt uit de data array
 export function makeTestStudents(em: EntityManager): Student[] {
-    return TEST_STUDENTS.map((data) => em.create(Student, data));
+    testStudents = TEST_STUDENTS.map((data) => em.create(Student, data));
+    return testStudents;
+}
+
+export function getTestleerling1(): Student {
+    return testStudents.find((it) => it.username === 'testleerling1');
 }

backend/tests/test_assets/users/teachers.testdata.ts

@@ -2,37 +2,63 @@ import { Teacher } from '../../../src/entities/users/teacher.entity';
 import { EntityManager } from '@mikro-orm/core';
 
 export function makeTestTeachers(em: EntityManager): Teacher[] {
-    const teacher01 = em.create(Teacher, {
+    teacher01 = em.create(Teacher, {
         username: 'FooFighters',
         firstName: 'Dave',
         lastName: 'Grohl',
     });
 
-    const teacher02 = em.create(Teacher, {
+    teacher02 = em.create(Teacher, {
         username: 'LimpBizkit',
         firstName: 'Fred',
         lastName: 'Durst',
     });
 
-    const teacher03 = em.create(Teacher, {
+    teacher03 = em.create(Teacher, {
         username: 'Staind',
         firstName: 'Aaron',
         lastName: 'Lewis',
     });
 
     // Should not be used, gets deleted in a unit test
-    const teacher04 = em.create(Teacher, {
+    teacher04 = em.create(Teacher, {
         username: 'ZesdeMetaal',
         firstName: 'Wannes',
         lastName: 'Cappelle',
     });
 
     // Makes sure when logged in as testleerkracht1, there exists a corresponding user
-    const teacher05 = em.create(Teacher, {
+    testleerkracht1 = em.create(Teacher, {
         username: 'testleerkracht1',
-        firstName: 'Bob',
+        firstName: 'Kris',
-        lastName: 'Dylan',
+        lastName: 'Coolsaet',
     });
 
-    return [teacher01, teacher02, teacher03, teacher04, teacher05];
+    return [teacher01, teacher02, teacher03, teacher04, testleerkracht1];
+}
+
+let teacher01: Teacher;
+let teacher02: Teacher;
+let teacher03: Teacher;
+let teacher04: Teacher;
+let testleerkracht1: Teacher;
+
+export function getTeacher01(): Teacher {
+    return teacher01;
+}
+
+export function getTeacher02(): Teacher {
+    return teacher02;
+}
+
+export function getTeacher03(): Teacher {
+    return teacher03;
+}
+
+export function getTeacher04(): Teacher {
+    return teacher04;
+}
+
+export function getTestleerkracht1(): Teacher {
+    return testleerkracht1;
 }

backend/tool/seed.ts

@@ -15,7 +15,7 @@ import { makeTestStudents } from '../tests/test_assets/users/students.testdata.j
 import { makeTestTeachers } from '../tests/test_assets/users/teachers.testdata.js';
 import { getLogger, Logger } from '../src/logging/initalize.js';
 import { Collection } from '@mikro-orm/core';
-import { Group } from '../dist/entities/assignments/group.entity.js';
+import { Group } from '../src/entities/assignments/group.entity';
 
 const logger: Logger = getLogger();
 

common/src/interfaces/learning-content.ts

@@ -1,14 +1,15 @@
 import { Language } from '../util/language';
 
 export interface Transition {
-    default: boolean;
+    default?: boolean;
-    _id: string;
+    _id?: string;
     next: {
-        _id: string;
+        _id?: string;
         hruid: string;
         version: number;
         language: string;
     };
+    condition?: string;
 }
 
 export interface LearningObjectIdentifierDTO {
@@ -18,7 +19,7 @@ export interface LearningObjectIdentifierDTO {
 }
 
 export interface LearningObjectNode {
-    _id: string;
+    _id?: string;
     learningobject_hruid: string;
     version: number;
     language: Language;
@@ -30,20 +31,20 @@ export interface LearningObjectNode {
 }
 
 export interface LearningPath {
-    _id: string;
+    _id?: string;
     language: string;
     hruid: string;
     title: string;
     description: string;
     image?: string; // Image might be missing, so it's optional
-    num_nodes: number;
+    num_nodes?: number;
-    num_nodes_left: number;
+    num_nodes_left?: number;
     nodes: LearningObjectNode[];
     keywords: string;
     target_ages: number[];
-    min_age: number;
+    min_age?: number;
-    max_age: number;
+    max_age?: number;
-    __order: number;
+    __order?: number;
 }
 
 export interface LearningPathIdentifier {
@@ -62,8 +63,8 @@ export interface ReturnValue {
 }
 
 export interface LearningObjectMetadata {
-    _id: string;
+    _id?: string;
-    uuid: string;
+    uuid?: string;
     hruid: string;
     version: number;
     language: Language;
@@ -84,7 +85,7 @@ export interface LearningObjectMetadata {
 
 export interface FilteredLearningObject {
     key: string;
-    _id: string;
+    _id?: string;
     uuid: string;
     version: number;
     title: string;

eslint.config.ts

@@ -71,7 +71,7 @@ export default [
             'init-declarations': 'off',
             '@typescript-eslint/init-declarations': 'off',
             'max-params': 'off',
-            '@typescript-eslint/max-params': ['error', { max: 6 }],
+            '@typescript-eslint/max-params': 'off',
             '@typescript-eslint/member-ordering': 'error',
             '@typescript-eslint/method-signature-style': 'off', // Don't care about TypeScript strict mode.
             '@typescript-eslint/naming-convention': [
@@ -87,6 +87,7 @@ export default [
                     modifiers: ['const'],
                     format: ['camelCase', 'UPPER_CASE'],
                     trailingUnderscore: 'allow',
+                    leadingUnderscore: 'allow',
                 },
                 {
                     // Enforce that private members are prefixed with an underscore

frontend/package.json

@@ -10,12 +10,14 @@
         "preview": "vite preview",
         "type-check": "vue-tsc --build",
         "format": "prettier --write src/",
+        "test:e2e": "playwright test",
         "format-check": "prettier --check src/",
         "lint": "eslint . --fix",
-        "test:unit": "vitest --run",
+        "pretest:unit": "tsx ../docs/api/generate.ts && npm run build",
-        "test:e2e": "playwright test"
+        "test:unit": "vitest --run"
     },
     "dependencies": {
+        "@dwengo-1/common": "^0.1.1",
         "@tanstack/react-query": "^5.69.0",
         "@tanstack/vue-query": "^5.69.0",
         "axios": "^1.8.2",

frontend/src/controllers/learning-paths.ts

@@ -8,20 +8,21 @@ export class LearningPathController extends BaseController {
     constructor() {
         super("learningPath");
     }
-    async search(query: string): Promise<LearningPath[]> {
+    async search(query: string, language: string): Promise<LearningPath[]> {
-        const dtos = await this.get<LearningPathDTO[]>("/", { search: query });
+        const dtos = await this.get<LearningPathDTO[]>("/", { search: query, language });
         return dtos.map((dto) => LearningPath.fromDTO(dto));
     }
     async getBy(
         hruid: string,
         language: Language,
-        options?: { forGroup?: string; forStudent?: string },
+        forGroup?: { forGroup: number; assignmentNo: number; classId: string },
     ): Promise<LearningPath> {
         const dtos = await this.get<LearningPathDTO[]>("/", {
             hruid,
             language,
-            forGroup: options?.forGroup,
+            forGroup: forGroup?.forGroup,
-            forStudent: options?.forStudent,
+            assignmentNo: forGroup?.assignmentNo,
+            classId: forGroup?.classId,
         });
         return LearningPath.fromDTO(single(dtos));
     }

frontend/src/controllers/submissions.ts

@@ -1,5 +1,6 @@
 import { BaseController } from "./base-controller";
 import type { SubmissionDTO, SubmissionDTOId } from "@dwengo-1/common/interfaces/submission";
+import type { Language } from "@dwengo-1/common/util/language";
 
 export interface SubmissionsResponse {
     submissions: SubmissionDTO[] | SubmissionDTOId[];
@@ -10,16 +11,36 @@ export interface SubmissionResponse {
 }
 
 export class SubmissionController extends BaseController {
-    constructor(classid: string, assignmentNumber: number, groupNumber: number) {
+    constructor(hruid: string) {
-        super(`class/${classid}/assignments/${assignmentNumber}/groups/${groupNumber}/submissions`);
+        super(`learningObject/${hruid}/submissions`);
     }
 
-    async getAll(full = true): Promise<SubmissionsResponse> {
+    async getAll(
-        return this.get<SubmissionsResponse>(`/`, { full });
+        language: Language,
+        version: number,
+        classId: string,
+        assignmentId: number,
+        groupId?: number,
+        full = true,
+    ): Promise<SubmissionsResponse> {
+        return this.get<SubmissionsResponse>(`/`, { language, version, classId, assignmentId, groupId, full });
     }
 
-    async getByNumber(submissionNumber: number): Promise<SubmissionResponse> {
+    async getByNumber(
-        return this.get<SubmissionResponse>(`/${submissionNumber}`);
+        language: Language,
+        version: number,
+        classId: string,
+        assignmentId: number,
+        groupId: number,
+        submissionNumber: number,
+    ): Promise<SubmissionResponse> {
+        return this.get<SubmissionResponse>(`/${submissionNumber}`, {
+            language,
+            version,
+            classId,
+            assignmentId,
+            groupId,
+        });
     }
 
     async createSubmission(data: SubmissionDTO): Promise<SubmissionResponse> {

frontend/src/i18n/locale/de.json

@@ -1,13 +1,13 @@
 {
     "welcome": "Willkommen",
-    "student": "schüler",
+    "student": "Schüler",
-    "teacher": "lehrer",
+    "teacher": "Lehrer",
     "assignments": "Aufgaben",
-    "classes": "Klasses",
+    "classes": "Klassen",
     "discussions": "Diskussionen",
     "login": "einloggen",
     "logout": "ausloggen",
-    "cancel": "kündigen",
+    "cancel": "abbrechen",
     "logoutVerification": "Sind Sie sicher, dass Sie sich abmelden wollen?",
     "homeTitle": "Unsere Stärken",
     "homeIntroduction1": "Wir entwickeln innovative Workshops und Bildungsressourcen, die wir in Zusammenarbeit mit Lehrern und Freiwilligen Schülern auf der ganzen Welt zur Verfügung stellen. Unsere Train-the-Trainer-Sitzungen ermöglichen es ihnen, unsere praktischen Workshops an die Schüler weiterzugeben.",
@@ -23,10 +23,10 @@
     "submitCode": "senden",
     "members": "Mitglieder",
     "themes": "Themen",
-    "choose-theme": "Wähle ein thema",
+    "choose-theme": "Wählen Sie ein Thema",
     "choose-age": "Alter auswählen",
     "theme-options": {
-        "all": "Alle themen",
+        "all": "Alle Themen",
         "culture": "Kultur",
         "electricity-and-mechanics": "Elektrizität und Mechanik",
         "nature-and-climate": "Natur und Klima",
@@ -37,11 +37,11 @@
         "algorithms": "Algorithmisches Denken"
     },
     "age-options": {
-        "all": "Alle altersgruppen",
+        "all": "Alle Altersgruppen",
         "primary-school": "Grundschule",
-        "lower-secondary": "12-14 jahre alt",
+        "lower-secondary": "12-14 Jahre alt",
-        "upper-secondary": "14-16 jahre alt",
+        "upper-secondary": "14-16 Jahre alt",
-        "high-school": "16-18 jahre alt",
+        "high-school": "16-18 Jahre alt",
         "older": "18 und älter"
     },
     "read-more": "Mehr lesen",
@@ -73,7 +73,18 @@
     "accept": "akzeptieren",
     "deny": "ablehnen",
     "sent": "sent",
-    "failed": "gescheitert",
+    "failed": "fehlgeschlagen",
     "wrong": "etwas ist schief gelaufen",
-    "created": "erstellt"
+    "created": "erstellt",
+    "submitSolution": "Lösung einreichen",
+    "submitNewSolution": "Neue Lösung einreichen",
+    "markAsDone": "Als fertig markieren",
+    "groupSubmissions": "Einreichungen dieser Gruppe",
+    "taskCompleted": "Aufgabe erledigt.",
+    "submittedBy": "Eingereicht von",
+    "timestamp": "Zeitpunkt",
+    "loadSubmission": "Einladen",
+    "noSubmissionsYet": "Noch keine Lösungen eingereicht.",
+    "viewAsGroup": "Fortschritt ansehen von Gruppe...",
+    "assignLearningPath": "Als Aufgabe geben"
 }

frontend/src/i18n/locale/en.json

@@ -75,5 +75,16 @@
     "sent": "sent",
     "failed": "failed",
     "wrong": "something went wrong",
-    "created": "created"
+    "created": "created",
+    "submitSolution": "Submit solution",
+    "submitNewSolution": "Submit new solution",
+    "markAsDone": "Mark as completed",
+    "groupSubmissions": "This group's submissions",
+    "taskCompleted": "Task completed.",
+    "submittedBy": "Submitted by",
+    "timestamp": "Timestamp",
+    "loadSubmission": "Load",
+    "noSubmissionsYet": "No submissions yet.",
+    "viewAsGroup": "View progress of group...",
+    "assignLearningPath": "assign"
 }

frontend/src/i18n/locale/fr.json

@@ -75,5 +75,16 @@
     "sent": "envoyé",
     "failed": "échoué",
     "wrong": "quelque chose n'a pas fonctionné",
-    "created": "créé"
+    "created": "créé",
+    "submitSolution": "Soumettre la solution",
+    "submitNewSolution": "Soumettre une nouvelle solution",
+    "markAsDone": "Marquer comme terminé",
+    "groupSubmissions": "Soumissions de ce groupe",
+    "taskCompleted": "Tâche terminée.",
+    "submittedBy": "Soumis par",
+    "timestamp": "Horodatage",
+    "loadSubmission": "Charger",
+    "noSubmissionsYet": "Pas encore de soumissions.",
+    "viewAsGroup": "Voir la progression du groupe...",
+    "assignLearningPath": "donner comme tâche"
 }

frontend/src/i18n/locale/nl.json

@@ -75,5 +75,16 @@
     "sent": "verzonden",
     "failed": "mislukt",
     "wrong": "er ging iets verkeerd",
-    "created": "gecreëerd"
+    "created": "gecreëerd",
+    "submitSolution": "Oplossing indienen",
+    "submitNewSolution": "Nieuwe oplossing indienen",
+    "markAsDone": "Markeren als afgewerkt",
+    "groupSubmissions": "Indieningen van deze groep",
+    "taskCompleted": "Taak afgewerkt.",
+    "submittedBy": "Ingediend door",
+    "timestamp": "Tijdstip",
+    "loadSubmission": "Inladen",
+    "noSubmissionsYet": "Nog geen indieningen.",
+    "viewAsGroup": "Vooruitgang bekijken van groep...",
+    "assignLearningPath": "Als opdracht geven"
 }

frontend/src/queries/groups.ts

@@ -10,7 +10,7 @@ import {
     useQueryClient,
     type UseQueryReturnType,
 } from "@tanstack/vue-query";
-import { computed, type MaybeRefOrGetter, toValue } from "vue";
+import { computed, toValue, type MaybeRefOrGetter } from "vue";
 import { invalidateAllSubmissionKeys } from "./submissions";
 
 type GroupsQueryKey = ["groups", string, number, boolean];
@@ -160,7 +160,7 @@ export function useDeleteGroupMutation(): UseMutationReturnType<
             const gn = response.group.groupNumber;
 
             await invalidateAllGroupKeys(queryClient, cid, an, gn);
-            await invalidateAllSubmissionKeys(queryClient, cid, an, gn);
+            await invalidateAllSubmissionKeys(queryClient, undefined, undefined, undefined, cid, an, gn);
         },
     });
 }

frontend/src/queries/learning-objects.ts

@@ -5,7 +5,7 @@ import { getLearningObjectController } from "@/controllers/controllers.ts";
 import type { LearningObject } from "@/data-objects/learning-objects/learning-object.ts";
 import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
 
-const LEARNING_OBJECT_KEY = "learningObject";
+export const LEARNING_OBJECT_KEY = "learningObject";
 const learningObjectController = getLearningObjectController();
 
 export function useLearningObjectMetadataQuery(

frontend/src/queries/learning-paths.ts

@@ -4,19 +4,19 @@ import { useQuery, type UseQueryReturnType } from "@tanstack/vue-query";
 import { getLearningPathController } from "@/controllers/controllers";
 import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
 
-const LEARNING_PATH_KEY = "learningPath";
+export const LEARNING_PATH_KEY = "learningPath";
 const learningPathController = getLearningPathController();
 
 export function useGetLearningPathQuery(
     hruid: MaybeRefOrGetter<string>,
     language: MaybeRefOrGetter<Language>,
-    options?: MaybeRefOrGetter<{ forGroup?: string; forStudent?: string }>,
+    forGroup?: MaybeRefOrGetter<{ forGroup: number; assignmentNo: number; classId: string } | undefined>,
 ): UseQueryReturnType<LearningPath, Error> {
     return useQuery({
-        queryKey: [LEARNING_PATH_KEY, "get", hruid, language, options],
+        queryKey: [LEARNING_PATH_KEY, "get", hruid, language, forGroup],
         queryFn: async () => {
-            const [hruidVal, languageVal, optionsVal] = [toValue(hruid), toValue(language), toValue(options)];
+            const [hruidVal, languageVal, forGroupVal] = [toValue(hruid), toValue(language), toValue(forGroup)];
-            return learningPathController.getBy(hruidVal, languageVal, optionsVal);
+            return learningPathController.getBy(hruidVal, languageVal, forGroupVal);
         },
         enabled: () => Boolean(toValue(hruid)) && Boolean(toValue(language)),
     });
@@ -34,12 +34,14 @@ export function useGetAllLearningPathsByThemeQuery(
 
 export function useSearchLearningPathQuery(
     query: MaybeRefOrGetter<string | undefined>,
+    language: MaybeRefOrGetter<string | undefined>,
 ): UseQueryReturnType<LearningPath[], Error> {
     return useQuery({
-        queryKey: [LEARNING_PATH_KEY, "search", query],
+        queryKey: [LEARNING_PATH_KEY, "search", query, language],
         queryFn: async () => {
             const queryVal = toValue(query)!;
-            return learningPathController.search(queryVal);
+            const languageVal = toValue(language)!;
+            return learningPathController.search(queryVal, languageVal);
         },
         enabled: () => Boolean(toValue(query)),
     });

frontend/src/queries/submissions.ts

@@ -1,39 +1,39 @@
-import { SubmissionController, type SubmissionResponse, type SubmissionsResponse } from "@/controllers/submissions";
+import { SubmissionController, type SubmissionResponse } from "@/controllers/submissions";
 import type { SubmissionDTO } from "@dwengo-1/common/interfaces/submission";
 import {
     QueryClient,
     useMutation,
+    type UseMutationReturnType,
     useQuery,
     useQueryClient,
-    type UseMutationReturnType,
     type UseQueryReturnType,
 } from "@tanstack/vue-query";
-import { computed, toValue, type MaybeRefOrGetter } from "vue";
+import { computed, type MaybeRefOrGetter, toValue } from "vue";
+import { LEARNING_PATH_KEY } from "@/queries/learning-paths.ts";
+import { LEARNING_OBJECT_KEY } from "@/queries/learning-objects.ts";
+import type { Language } from "@dwengo-1/common/util/language";
 
-type SubmissionsQueryKey = ["submissions", string, number, number, boolean];
+export const SUBMISSION_KEY = "submissions";
 
-function submissionsQueryKey(
+type SubmissionQueryKey = ["submission", string, Language | undefined, number, string, number, number, number];
-    classid: string,
-    assignmentNumber: number,
-    groupNumber: number,
-    full: boolean,
-): SubmissionsQueryKey {
-    return ["submissions", classid, assignmentNumber, groupNumber, full];
-}
-
-type SubmissionQueryKey = ["submission", string, number, number, number];
 
 function submissionQueryKey(
+    hruid: string,
+    language: Language,
+    version: number,
     classid: string,
     assignmentNumber: number,
     groupNumber: number,
     submissionNumber: number,
 ): SubmissionQueryKey {
-    return ["submission", classid, assignmentNumber, groupNumber, submissionNumber];
+    return ["submission", hruid, language, version, classid, assignmentNumber, groupNumber, submissionNumber];
 }
 
 export async function invalidateAllSubmissionKeys(
     queryClient: QueryClient,
+    hruid?: string,
+    language?: Language,
+    version?: number,
     classid?: string,
     assignmentNumber?: number,
     groupNumber?: number,
@@ -43,101 +43,134 @@ export async function invalidateAllSubmissionKeys(
 
     await Promise.all(
         keys.map(async (key) => {
-            const queryKey = [key, classid, assignmentNumber, groupNumber, submissionNumber].filter(
+            const queryKey = [
-                (arg) => arg !== undefined,
+                key,
-            );
+                hruid,
+                language,
+                version,
+                classid,
+                assignmentNumber,
+                groupNumber,
+                submissionNumber,
+            ].filter((arg) => arg !== undefined);
             return queryClient.invalidateQueries({ queryKey: queryKey });
         }),
     );
 
     await queryClient.invalidateQueries({
-        queryKey: ["submissions", classid, assignmentNumber, groupNumber].filter((arg) => arg !== undefined),
+        queryKey: ["submissions", hruid, language, version, classid, assignmentNumber, groupNumber].filter(
+            (arg) => arg !== undefined,
+        ),
     });
     await queryClient.invalidateQueries({
-        queryKey: ["group-submissions", classid, assignmentNumber, groupNumber].filter((arg) => arg !== undefined),
+        queryKey: ["group-submissions", hruid, language, version, classid, assignmentNumber, groupNumber].filter(
+            (arg) => arg !== undefined,
+        ),
     });
     await queryClient.invalidateQueries({
-        queryKey: ["assignment-submissions", classid, assignmentNumber].filter((arg) => arg !== undefined),
+        queryKey: ["assignment-submissions", hruid, language, version, classid, assignmentNumber].filter(
+            (arg) => arg !== undefined,
+        ),
     });
 }
 
-function checkEnabled(
+function checkEnabled(properties: MaybeRefOrGetter<unknown>[]): boolean {
-    classid: string | undefined,
+    return properties.every((prop) => Boolean(toValue(prop)));
-    assignmentNumber: number | undefined,
-    groupNumber: number | undefined,
-    submissionNumber: number | undefined,
-): boolean {
-    return (
-        Boolean(classid) &&
-        !isNaN(Number(groupNumber)) &&
-        !isNaN(Number(assignmentNumber)) &&
-        !isNaN(Number(submissionNumber))
-    );
-}
-
-interface Values {
-    cid: string | undefined;
-    an: number | undefined;
-    gn: number | undefined;
-    sn: number | undefined;
-    f: boolean;
-}
-
-function toValues(
-    classid: MaybeRefOrGetter<string | undefined>,
-    assignmentNumber: MaybeRefOrGetter<number | undefined>,
-    groupNumber: MaybeRefOrGetter<number | undefined>,
-    submissionNumber: MaybeRefOrGetter<number | undefined>,
-    full: MaybeRefOrGetter<boolean>,
-): Values {
-    return {
-        cid: toValue(classid),
-        an: toValue(assignmentNumber),
-        gn: toValue(groupNumber),
-        sn: toValue(submissionNumber),
-        f: toValue(full),
-    };
 }
 
 export function useSubmissionsQuery(
+    hruid: MaybeRefOrGetter<string | undefined>,
+    language: MaybeRefOrGetter<Language | undefined>,
+    version: MaybeRefOrGetter<number | undefined>,
     classid: MaybeRefOrGetter<string | undefined>,
     assignmentNumber: MaybeRefOrGetter<number | undefined>,
     groupNumber: MaybeRefOrGetter<number | undefined>,
     full: MaybeRefOrGetter<boolean> = true,
-): UseQueryReturnType<SubmissionsResponse, Error> {
+): UseQueryReturnType<SubmissionDTO[], Error> {
-    const { cid, an, gn, sn, f } = toValues(classid, assignmentNumber, groupNumber, 1, full);
-
     return useQuery({
-        queryKey: computed(() => submissionsQueryKey(cid!, an!, gn!, f)),
+        queryKey: ["submissions", hruid, language, version, classid, assignmentNumber, groupNumber, full],
-        queryFn: async () => new SubmissionController(cid!, an!, gn!).getAll(f),
+        queryFn: async () => {
-        enabled: () => checkEnabled(cid, an, gn, sn),
+            const hruidVal = toValue(hruid);
+            const languageVal = toValue(language);
+            const versionVal = toValue(version);
+            const classIdVal = toValue(classid);
+            const assignmentNumberVal = toValue(assignmentNumber);
+            const groupNumberVal = toValue(groupNumber);
+            const fullVal = toValue(full);
+
+            const response = await new SubmissionController(hruidVal!).getAll(
+                languageVal,
+                versionVal!,
+                classIdVal!,
+                assignmentNumberVal!,
+                groupNumberVal,
+                fullVal,
+            );
+            return response ? (response.submissions as SubmissionDTO[]) : undefined;
+        },
+        enabled: () => checkEnabled([hruid, language, version, classid, assignmentNumber]),
     });
 }
 
 export function useSubmissionQuery(
+    hruid: MaybeRefOrGetter<string | undefined>,
+    language: MaybeRefOrGetter<Language | undefined>,
+    version: MaybeRefOrGetter<number | undefined>,
     classid: MaybeRefOrGetter<string | undefined>,
     assignmentNumber: MaybeRefOrGetter<number | undefined>,
     groupNumber: MaybeRefOrGetter<number | undefined>,
+    submissionNumber: MaybeRefOrGetter<number | undefined>,
 ): UseQueryReturnType<SubmissionResponse, Error> {
-    const { cid, an, gn, sn } = toValues(classid, assignmentNumber, groupNumber, 1, true);
+    const hruidVal = toValue(hruid);
+    const languageVal = toValue(language);
+    const versionVal = toValue(version);
+    const classIdVal = toValue(classid);
+    const assignmentNumberVal = toValue(assignmentNumber);
+    const groupNumberVal = toValue(groupNumber);
+    const submissionNumberVal = toValue(submissionNumber);
 
     return useQuery({
-        queryKey: computed(() => submissionQueryKey(cid!, an!, gn!, sn!)),
+        queryKey: computed(() =>
-        queryFn: async () => new SubmissionController(cid!, an!, gn!).getByNumber(sn!),
+            submissionQueryKey(
-        enabled: () => checkEnabled(cid, an, gn, sn),
+                hruidVal!,
+                languageVal,
+                versionVal!,
+                classIdVal!,
+                assignmentNumberVal!,
+                groupNumberVal!,
+                submissionNumberVal!,
+            ),
+        ),
+        queryFn: async () =>
+            new SubmissionController(hruidVal!).getByNumber(
+                languageVal,
+                versionVal!,
+                classIdVal!,
+                assignmentNumberVal!,
+                groupNumberVal!,
+                submissionNumberVal!,
+            ),
+        enabled: () =>
+            Boolean(hruidVal) &&
+            Boolean(languageVal) &&
+            Boolean(versionVal) &&
+            Boolean(classIdVal) &&
+            Boolean(assignmentNumberVal) &&
+            Boolean(submissionNumber),
     });
 }
 
 export function useCreateSubmissionMutation(): UseMutationReturnType<
     SubmissionResponse,
     Error,
-    { cid: string; an: number; gn: number; data: SubmissionDTO },
+    { data: SubmissionDTO },
     unknown
 > {
     const queryClient = useQueryClient();
 
     return useMutation({
-        mutationFn: async ({ cid, an, gn, data }) => new SubmissionController(cid, an, gn).createSubmission(data),
+        mutationFn: async ({ data }) =>
+            new SubmissionController(data.learningObjectIdentifier.hruid).createSubmission(data),
         onSuccess: async (response) => {
             if (!response.submission.group) {
                 await invalidateAllSubmissionKeys(queryClient);
@@ -149,7 +182,14 @@ export function useCreateSubmissionMutation(): UseMutationReturnType<
                 const an = typeof assignment === "number" ? assignment : assignment.id;
                 const gn = response.submission.group.groupNumber;
 
-                await invalidateAllSubmissionKeys(queryClient, cid, an, gn);
+                const { hruid, language, version } = response.submission.learningObjectIdentifier;
+                await invalidateAllSubmissionKeys(queryClient, hruid, language, version, cid, an, gn);
+
+                await queryClient.invalidateQueries({ queryKey: [LEARNING_PATH_KEY, "get"] });
+
+                await queryClient.invalidateQueries({
+                    queryKey: [LEARNING_OBJECT_KEY, "metadata", hruid, language, version],
+                });
             }
         },
     });
@@ -164,7 +204,7 @@ export function useDeleteSubmissionMutation(): UseMutationReturnType<
     const queryClient = useQueryClient();
 
     return useMutation({
-        mutationFn: async ({ cid, an, gn, sn }) => new SubmissionController(cid, an, gn).deleteSubmission(sn),
+        mutationFn: async ({ cid, sn }) => new SubmissionController(cid).deleteSubmission(sn),
         onSuccess: async (response) => {
             if (!response.submission.group) {
                 await invalidateAllSubmissionKeys(queryClient);
@@ -176,7 +216,9 @@ export function useDeleteSubmissionMutation(): UseMutationReturnType<
                 const an = typeof assignment === "number" ? assignment : assignment.id;
                 const gn = response.submission.group.groupNumber;
 
-                await invalidateAllSubmissionKeys(queryClient, cid, an, gn);
+                const { hruid, language, version } = response.submission.learningObjectIdentifier;
+
+                await invalidateAllSubmissionKeys(queryClient, hruid, language, version, cid, an, gn);
             }
         },
     });

frontend/src/router/index.ts

@@ -14,7 +14,7 @@ import LearningPathPage from "@/views/learning-paths/LearningPathPage.vue";
 import LearningPathSearchPage from "@/views/learning-paths/LearningPathSearchPage.vue";
 import UserHomePage from "@/views/homepage/UserHomePage.vue";
 import SingleTheme from "@/views/SingleTheme.vue";
-import LearningObjectView from "@/views/learning-paths/LearningObjectView.vue";
+import LearningObjectView from "@/views/learning-paths/learning-object/LearningObjectView.vue";
 
 const router = createRouter({
     history: createWebHistory(import.meta.env.BASE_URL),

frontend/src/utils/array-utils.ts

@@ -0,0 +1,5 @@
+export function copyArrayWith<T>(index: number, newValue: T, array: T[]): T[] {
+    const copy = [...array];
+    copy[index] = newValue;
+    return copy;
+}

frontend/src/utils/deep-equals.ts

@@ -0,0 +1,29 @@
+export function deepEquals<T>(a: T, b: T): boolean {
+    if (a === b) {
+        return true;
+    }
+
+    if (typeof a !== "object" || typeof b !== "object" || a === null || b === null) {
+        return false;
+    }
+
+    if (Array.isArray(a) !== Array.isArray(b)) {
+        return false;
+    }
+
+    if (Array.isArray(a) && Array.isArray(b)) {
+        if (a.length !== b.length) {
+            return false;
+        }
+        return a.every((val, i) => deepEquals(val, b[i]));
+    }
+
+    const keysA = Object.keys(a) as (keyof T)[];
+    const keysB = Object.keys(b) as (keyof T)[];
+
+    if (keysA.length !== keysB.length) {
+        return false;
+    }
+
+    return keysA.every((key) => deepEquals(a[key], b[key]));
+}

frontend/src/views/assignments/CreateAssignment.vue

@@ -1,7 +1,14 @@
-<script setup lang="ts"></script>
+<script setup lang="ts">
+    import { useRoute } from "vue-router";
+
+    const route = useRoute();
+</script>
 
 <template>
-    <main></main>
+    <main>
+        Hier zou de pagina staan om een assignment aan te maken voor de leerpad met hruid {{ route.query.hruid }} en
+        language {{ route.query.language }}. (Overschrijf dit)
+    </main>
 </template>
 
 <style scoped></style>

frontend/src/views/learning-paths/LearningObjectView.vue

@@ -1,51 +0,0 @@
-<script setup lang="ts">
-    import { Language } from "@/data-objects/language.ts";
-    import type { UseQueryReturnType } from "@tanstack/vue-query";
-    import { useLearningObjectHTMLQuery } from "@/queries/learning-objects.ts";
-    import UsingQueryResult from "@/components/UsingQueryResult.vue";
-
-    const props = defineProps<{ hruid: string; language: Language; version: number }>();
-
-    const learningObjectHtmlQueryResult: UseQueryReturnType<Document, Error> = useLearningObjectHTMLQuery(
-        () => props.hruid,
-        () => props.language,
-        () => props.version,
-    );
-</script>
-
-<template>
-    <using-query-result
-        :query-result="learningObjectHtmlQueryResult as UseQueryReturnType<Document, Error>"
-        v-slot="learningPathHtml: { data: Document }"
-    >
-        <div
-            class="learning-object-container"
-            v-html="learningPathHtml.data.body.innerHTML"
-        ></div>
-    </using-query-result>
-</template>
-
-<style scoped>
-    .learning-object-container {
-        padding: 20px;
-    }
-    :deep(hr) {
-        margin-top: 10px;
-        margin-bottom: 10px;
-    }
-    :deep(li) {
-        margin-left: 30px;
-        margin-top: 5px;
-        margin-bottom: 5px;
-    }
-    :deep(img) {
-        max-width: 80%;
-    }
-    :deep(h2),
-    :deep(h3),
-    :deep(h4),
-    :deep(h5),
-    :deep(h6) {
-        margin-top: 10px;
-    }
-</style>

frontend/src/views/learning-paths/LearningPathGroupSelector.vue

@@ -0,0 +1,55 @@
+<script setup lang="ts">
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import { useGroupsQuery } from "@/queries/groups.ts";
+    import type { GroupsResponse } from "@/controllers/groups.ts";
+    import { useI18n } from "vue-i18n";
+    import type { GroupDTO } from "@dwengo-1/common/interfaces/group";
+
+    const { t } = useI18n();
+
+    const props = defineProps<{
+        classId: string;
+        assignmentNumber: number;
+    }>();
+
+    const model = defineModel<number | undefined>({ default: undefined });
+
+    const groupsQuery = useGroupsQuery(props.classId, props.assignmentNumber, true);
+
+    interface GroupSelectorOption {
+        groupNumber: number | undefined;
+        label: string;
+    }
+
+    function groupOptions(groups: GroupDTO[]): GroupSelectorOption[] {
+        return [...groups]
+            .sort((a, b) => a.groupNumber - b.groupNumber)
+            .map((group, index) => ({
+                groupNumber: group.groupNumber,
+                label: `${index + 1}`,
+            }));
+    }
+</script>
+
+<template>
+    <using-query-result
+        :query-result="groupsQuery"
+        v-slot="{ data }: { data: GroupsResponse }"
+    >
+        <v-select
+            :label="t('viewAsGroup')"
+            :items="groupOptions(data.groups)"
+            v-model="model"
+            item-title="label"
+            class="group-selector-cb"
+            variant="outlined"
+            clearable
+        ></v-select>
+    </using-query-result>
+</template>
+
+<style scoped>
+    .group-selector-cb {
+        margin-top: 10px;
+    }
+</style>

frontend/src/views/learning-paths/LearningPathPage.vue

@@ -3,8 +3,8 @@
     import type { LearningPath } from "@/data-objects/learning-paths/learning-path.ts";
     import { computed, type ComputedRef, ref } from "vue";
     import type { LearningObject } from "@/data-objects/learning-objects/learning-object.ts";
-    import { useRoute } from "vue-router";
+    import { useRoute, useRouter } from "vue-router";
-    import LearningObjectView from "@/views/learning-paths/LearningObjectView.vue";
+    import LearningObjectView from "@/views/learning-paths/learning-object/LearningObjectView.vue";
     import { useI18n } from "vue-i18n";
     import LearningPathSearchField from "@/components/LearningPathSearchField.vue";
     import { useGetLearningPathQuery } from "@/queries/learning-paths.ts";
@@ -12,30 +12,38 @@
     import UsingQueryResult from "@/components/UsingQueryResult.vue";
     import authService from "@/services/auth/auth-service.ts";
     import { LearningPathNode } from "@/data-objects/learning-paths/learning-path-node.ts";
+    import LearningPathGroupSelector from "@/views/learning-paths/LearningPathGroupSelector.vue";
 
+    const router = useRouter();
     const route = useRoute();
     const { t } = useI18n();
 
-    const props = defineProps<{ hruid: string; language: Language; learningObjectHruid?: string }>();
+    const props = defineProps<{
+        hruid: string;
+        language: Language;
+        learningObjectHruid?: string;
+    }>();
 
-    interface Personalization {
+    interface LearningPathPageQuery {
-        forStudent?: string;
         forGroup?: string;
+        assignmentNo?: string;
+        classId?: string;
     }
 
-    const personalization = computed(() => {
+    const query = computed(() => route.query as LearningPathPageQuery);
-        if (route.query.forStudent || route.query.forGroup) {
+
+    const forGroup = computed(() => {
+        if (query.value.forGroup && query.value.assignmentNo && query.value.classId) {
             return {
-                forStudent: route.query.forStudent,
+                forGroup: parseInt(query.value.forGroup),
-                forGroup: route.query.forGroup,
+                assignmentNo: parseInt(query.value.assignmentNo),
-            } as Personalization;
+                classId: query.value.classId,
+            };
         }
-        return {
+        return undefined;
-            forStudent: authService.authState.user?.profile?.preferred_username,
-        } as Personalization;
     });
 
-    const learningPathQueryResult = useGetLearningPathQuery(props.hruid, props.language, personalization);
+    const learningPathQueryResult = useGetLearningPathQuery(props.hruid, props.language, forGroup);
 
     const learningObjectListQueryResult = useLearningObjectListForPathQuery(learningPathQueryResult.data);
 
@@ -98,6 +106,25 @@
         }
         return "notCompleted";
     }
+
+    const forGroupQueryParam = computed<number | undefined>({
+        get: () => route.query.forGroup,
+        set: async (value: number | undefined) => {
+            const query = structuredClone(route.query);
+            query.forGroup = value;
+            await router.push({ query });
+        },
+    });
+
+    async function assign(): Promise<void> {
+        await router.push({
+            path: "/assignment/create",
+            query: {
+                hruid: props.hruid,
+                language: props.language,
+            },
+        });
+    }
 </script>
 
 <template>
@@ -109,6 +136,7 @@
             v-model="navigationDrawerShown"
             :width="350"
         >
+            <div class="d-flex flex-column h-100">
                 <v-list-item>
                     <template v-slot:title>
                         <div class="learning-path-title">{{ learningPath.data.title }}</div>
@@ -142,6 +170,17 @@
                         </p>
                     </template>
                 </v-list-item>
+                <v-list-item
+                    v-if="query.classId && query.assignmentNo && authService.authState.activeRole === 'teacher'"
+                >
+                    <template v-slot:default>
+                        <learning-path-group-selector
+                            :class-id="query.classId"
+                            :assignment-number="parseInt(query.assignmentNo)"
+                            v-model="forGroupQueryParam"
+                        />
+                    </template>
+                </v-list-item>
                 <v-divider></v-divider>
                 <div v-if="props.learningObjectHruid">
                     <using-query-result
@@ -168,6 +207,17 @@
                         </template>
                     </using-query-result>
                 </div>
+                <v-spacer></v-spacer>
+                <v-list-item v-if="authService.authState.activeRole === 'teacher'">
+                    <template v-slot:default>
+                        <v-btn
+                            class="button-in-nav"
+                            @click="assign()"
+                            >{{ t("assignLearningPath") }}</v-btn
+                        >
+                    </template>
+                </v-list-item>
+            </div>
         </v-navigation-drawer>
         <div class="control-bar-above-content">
             <v-btn
@@ -180,12 +230,15 @@
                 <learning-path-search-field></learning-path-search-field>
             </div>
         </div>
+        <div class="learning-object-view-container">
             <learning-object-view
                 :hruid="currentNode.learningobjectHruid"
                 :language="currentNode.language"
                 :version="currentNode.version"
+                :group="forGroup"
                 v-if="currentNode"
             ></learning-object-view>
+        </div>
         <div class="navigation-buttons-container">
             <v-btn
                 prepend-icon="mdi-chevron-left"
@@ -221,9 +274,18 @@
         display: flex;
         justify-content: space-between;
     }
+    .learning-object-view-container {
+        padding-left: 20px;
+        padding-right: 20px;
+        padding-bottom: 20px;
+    }
     .navigation-buttons-container {
         padding: 20px;
         display: flex;
         justify-content: space-between;
     }
+    .button-in-nav {
+        margin-top: 10px;
+        margin-bottom: 10px;
+    }
 </style>

frontend/src/views/learning-paths/LearningPathSearchPage.vue

@@ -9,11 +9,11 @@
     import LearningPathsGrid from "@/components/LearningPathsGrid.vue";
 
     const route = useRoute();
-    const { t } = useI18n();
+    const { t, locale } = useI18n();
 
     const query = computed(() => route.query.query as string | undefined);
 
-    const searchQueryResults = useSearchLearningPathQuery(query);
+    const searchQueryResults = useSearchLearningPathQuery(query, locale);
 </script>
 
 <template>

frontend/src/views/learning-paths/gift-adapters/essay-question-adapter.ts

@@ -0,0 +1,18 @@
+export const essayQuestionAdapter: GiftAdapter = {
+    questionType: "Essay",
+
+    installListener(
+        questionElement: Element,
+        answerUpdateCallback: (newAnswer: string | number | object) => void,
+    ): void {
+        const textArea = questionElement.querySelector("textarea")!;
+        textArea.addEventListener("input", () => {
+            answerUpdateCallback(textArea.value);
+        });
+    },
+
+    setAnswer(questionElement: Element, answer: string | number | object): void {
+        const textArea = questionElement.querySelector("textarea")!;
+        textArea.value = String(answer);
+    },
+};

frontend/src/views/learning-paths/gift-adapters/gift-adapter.d.ts

@@ -0,0 +1,8 @@
+interface GiftAdapter {
+    questionType: string;
+    installListener(
+        questionElement: Element,
+        answerUpdateCallback: (newAnswer: string | number | object) => void,
+    ): void;
+    setAnswer(questionElement: Element, answer: string | number | object): void;
+}

frontend/src/views/learning-paths/gift-adapters/gift-adapters.ts

@@ -0,0 +1,8 @@
+import { multipleChoiceQuestionAdapter } from "@/views/learning-paths/gift-adapters/multiple-choice-question-adapter.ts";
+import { essayQuestionAdapter } from "@/views/learning-paths/gift-adapters/essay-question-adapter.ts";
+
+export const giftAdapters = [multipleChoiceQuestionAdapter, essayQuestionAdapter];
+
+export function getGiftAdapterForType(questionType: string): GiftAdapter | undefined {
+    return giftAdapters.find((it) => it.questionType === questionType);
+}

frontend/src/views/learning-paths/gift-adapters/multiple-choice-question-adapter.ts

@@ -0,0 +1,27 @@
+export const multipleChoiceQuestionAdapter: GiftAdapter = {
+    questionType: "MC",
+
+    installListener(
+        questionElement: Element,
+        answerUpdateCallback: (newAnswer: string | number | object) => void,
+    ): void {
+        questionElement.querySelectorAll("input[type=radio]").forEach((element) => {
+            const input = element as HTMLInputElement;
+
+            input.addEventListener("change", () => {
+                answerUpdateCallback(parseInt(input.value));
+            });
+            // Optional: initialize value if already selected
+            if (input.checked) {
+                answerUpdateCallback(parseInt(input.value));
+            }
+        });
+    },
+
+    setAnswer(questionElement: Element, answer: string | number | object): void {
+        questionElement.querySelectorAll("input[type=radio]").forEach((element) => {
+            const input = element as HTMLInputElement;
+            input.checked = String(answer) === String(input.value);
+        });
+    },
+};

frontend/src/views/learning-paths/learning-object/LearningObjectView.vue

@@ -0,0 +1,73 @@
+<script setup lang="ts">
+    import { Language } from "@/data-objects/language.ts";
+    import type { UseQueryReturnType } from "@tanstack/vue-query";
+    import { useLearningObjectHTMLQuery } from "@/queries/learning-objects.ts";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import { computed, ref } from "vue";
+    import authService from "@/services/auth/auth-service.ts";
+    import type { SubmissionData } from "@/views/learning-paths/learning-object/submission-data";
+    import LearningObjectContentView from "@/views/learning-paths/learning-object/content/LearningObjectContentView.vue";
+    import LearningObjectSubmissionsView from "@/views/learning-paths/learning-object/submissions/LearningObjectSubmissionsView.vue";
+
+    const _isStudent = computed(() => authService.authState.activeRole === "student");
+
+    const props = defineProps<{
+        hruid: string;
+        language: Language;
+        version: number;
+        group?: { forGroup: number; assignmentNo: number; classId: string };
+    }>();
+
+    const learningObjectHtmlQueryResult: UseQueryReturnType<Document, Error> = useLearningObjectHTMLQuery(
+        () => props.hruid,
+        () => props.language,
+        () => props.version,
+    );
+    const currentSubmission = ref<SubmissionData>([]);
+</script>
+
+<template>
+    <using-query-result
+        :query-result="learningObjectHtmlQueryResult as UseQueryReturnType<Document, Error>"
+        v-slot="learningPathHtml: { data: Document }"
+    >
+        <learning-object-content-view
+            :learning-object-content="learningPathHtml.data"
+            v-model:submission-data="currentSubmission"
+        />
+        <div class="content-submissions-spacer" />
+        <learning-object-submissions-view
+            v-if="props.group"
+            :group="props.group"
+            :hruid="props.hruid"
+            :language="props.language"
+            :version="props.version"
+            v-model:submission-data="currentSubmission"
+        />
+    </using-query-result>
+</template>
+
+<style scoped>
+    :deep(hr) {
+        margin-top: 10px;
+        margin-bottom: 10px;
+    }
+    :deep(li) {
+        margin-left: 30px;
+        margin-top: 5px;
+        margin-bottom: 5px;
+    }
+    :deep(img) {
+        max-width: 80%;
+    }
+    :deep(h2),
+    :deep(h3),
+    :deep(h4),
+    :deep(h5),
+    :deep(h6) {
+        margin-top: 10px;
+    }
+    .content-submissions-spacer {
+        height: 20px;
+    }
+</style>

frontend/src/views/learning-paths/learning-object/content/LearningObjectContentView.vue

@@ -0,0 +1,90 @@
+<script setup lang="ts">
+    import type { SubmissionData } from "@/views/learning-paths/learning-object/submission-data";
+    import { getGiftAdapterForType } from "@/views/learning-paths/gift-adapters/gift-adapters.ts";
+    import { computed, nextTick, onMounted, watch } from "vue";
+    import { copyArrayWith } from "@/utils/array-utils.ts";
+
+    const props = defineProps<{
+        learningObjectContent: Document;
+        submissionData?: SubmissionData;
+    }>();
+
+    const emit = defineEmits<(e: "update:submissionData", value: SubmissionData) => void>();
+
+    const submissionData = computed<SubmissionData | undefined>({
+        get: () => props.submissionData,
+        set: (v?: SubmissionData): void => {
+            if (v) emit("update:submissionData", v);
+        },
+    });
+
+    function forEachQuestion(
+        doAction: (questionIndex: number, questionName: string, questionType: string, questionElement: Element) => void,
+    ): void {
+        const questions = document.querySelectorAll(".gift-question");
+        questions.forEach((question) => {
+            const name = question.id.match(/gift-q(\d+)/)?.[1];
+            const questionType = question.className
+                .split(" ")
+                .find((it) => it.startsWith("gift-question-type"))
+                ?.match(/gift-question-type-([^ ]*)/)?.[1];
+
+            if (!name || isNaN(parseInt(name)) || !questionType) return;
+
+            const index = parseInt(name) - 1;
+
+            doAction(index, name, questionType, question);
+        });
+    }
+
+    function attachQuestionListeners(): void {
+        forEachQuestion((index, _name, type, element) => {
+            getGiftAdapterForType(type)?.installListener(element, (newAnswer) => {
+                submissionData.value = copyArrayWith(index, newAnswer, submissionData.value ?? []);
+            });
+        });
+    }
+
+    function setAnswers(answers: SubmissionData): void {
+        forEachQuestion((index, _name, type, element) => {
+            const answer = answers[index];
+            if (answer !== null && answer !== undefined) {
+                getGiftAdapterForType(type)?.setAnswer(element, answer);
+            } else if (answer === undefined) {
+                answers[index] = null;
+            }
+        });
+        submissionData.value = answers;
+    }
+
+    onMounted(async () =>
+        nextTick(() => {
+            attachQuestionListeners();
+            setAnswers(props.submissionData ?? []);
+        }),
+    );
+
+    watch(
+        () => props.learningObjectContent,
+        async () => {
+            await nextTick();
+            attachQuestionListeners();
+        },
+    );
+    watch(
+        () => props.submissionData,
+        async () => {
+            await nextTick();
+            setAnswers(props.submissionData ?? []);
+        },
+    );
+</script>
+
+<template>
+    <div
+        class="learning-object-container"
+        v-html="learningObjectContent.body.innerHTML"
+    ></div>
+</template>
+
+<style scoped></style>

frontend/src/views/learning-paths/learning-object/submission-data.d.ts

@@ -0,0 +1 @@
+export type SubmissionData = (string | number | object | null)[];

frontend/src/views/learning-paths/learning-object/submissions/LearningObjectSubmissionsTable.vue

@@ -0,0 +1,61 @@
+<script setup lang="ts">
+    import type { SubmissionDTO } from "@dwengo-1/common/interfaces/submission";
+    import { computed } from "vue";
+    import { useI18n } from "vue-i18n";
+
+    const { t } = useI18n();
+
+    const props = defineProps<{
+        allSubmissions: SubmissionDTO[];
+    }>();
+    const emit = defineEmits<(e: "submission-selected", submission: SubmissionDTO) => void>();
+
+    const headers = computed(() => [
+        { title: "#", value: "submissionNo", width: "50px" },
+        { title: t("submittedBy"), value: "submittedBy" },
+        { title: t("timestamp"), value: "timestamp" },
+        { title: "", key: "action", width: "70px", sortable: false },
+    ]);
+
+    const data = computed(() =>
+        [...props.allSubmissions]
+            .sort((a, b) => (a.submissionNumber ?? 0) - (b.submissionNumber ?? 0))
+            .map((submission, index) => ({
+                submissionNo: index + 1,
+                submittedBy: `${submission.submitter.firstName} ${submission.submitter.lastName}`,
+                timestamp: submission.time ? new Date(submission.time).toLocaleString() : "-",
+                dto: submission,
+            })),
+    );
+
+    function selectSubmission(submission: SubmissionDTO): void {
+        emit("submission-selected", submission);
+    }
+</script>
+
+<template>
+    <v-card>
+        <v-card-title>{{ t("groupSubmissions") }}</v-card-title>
+        <v-card-text>
+            <v-data-table
+                :headers="headers"
+                :items="data"
+                density="compact"
+                hide-default-footer
+                :no-data-text="t('noSubmissionsYet')"
+            >
+                <template v-slot:[`item.action`]="{ item }">
+                    <v-btn
+                        density="compact"
+                        variant="plain"
+                        @click="selectSubmission(item.dto)"
+                    >
+                        {{ t("loadSubmission") }}
+                    </v-btn>
+                </template>
+            </v-data-table>
+        </v-card-text>
+    </v-card>
+</template>
+
+<style scoped></style>

frontend/src/views/learning-paths/learning-object/submissions/LearningObjectSubmissionsView.vue

@@ -0,0 +1,97 @@
+<script setup lang="ts">
+    import type { SubmissionData } from "@/views/learning-paths/learning-object/submission-data";
+    import type { SubmissionDTO } from "@dwengo-1/common/interfaces/submission";
+    import { Language } from "@/data-objects/language.ts";
+    import { useSubmissionsQuery } from "@/queries/submissions.ts";
+    import UsingQueryResult from "@/components/UsingQueryResult.vue";
+    import SubmitButton from "@/views/learning-paths/learning-object/submissions/SubmitButton.vue";
+    import { computed, watch } from "vue";
+    import LearningObjectSubmissionsTable from "@/views/learning-paths/learning-object/submissions/LearningObjectSubmissionsTable.vue";
+    import { useI18n } from "vue-i18n";
+
+    const { t } = useI18n();
+
+    const props = defineProps<{
+        submissionData?: SubmissionData;
+        hruid: string;
+        language: Language;
+        version: number;
+        group: { forGroup: number; assignmentNo: number; classId: string };
+    }>();
+    const emit = defineEmits<(e: "update:submissionData", value: SubmissionData) => void>();
+
+    const submissionQuery = useSubmissionsQuery(
+        () => props.hruid,
+        () => props.language,
+        () => props.version,
+        () => props.group.classId,
+        () => props.group.assignmentNo,
+        () => props.group.forGroup,
+        () => true,
+    );
+
+    function emitSubmissionData(submissionData: SubmissionData): void {
+        emit("update:submissionData", submissionData);
+    }
+
+    function emitSubmission(submission: SubmissionDTO): void {
+        emitSubmissionData(JSON.parse(submission.content));
+    }
+
+    watch(submissionQuery.data, () => {
+        const submissions = submissionQuery.data.value;
+        if (submissions && submissions.length > 0) {
+            emitSubmission(submissions[submissions.length - 1]);
+        } else {
+            emitSubmissionData([]);
+        }
+    });
+
+    const lastSubmission = computed<SubmissionData>(() => {
+        const submissions = submissionQuery.data.value;
+        if (!submissions || submissions.length === 0) {
+            return undefined;
+        }
+        return JSON.parse(submissions[submissions.length - 1].content);
+    });
+
+    const showSubmissionTable = computed(() => props.submissionData !== undefined && props.submissionData.length > 0);
+
+    const showIsDoneMessage = computed(() => lastSubmission.value !== undefined && lastSubmission.value.length === 0);
+</script>
+
+<template>
+    <using-query-result
+        :query-result="submissionQuery"
+        v-slot="submissions: { data: SubmissionDTO[] }"
+    >
+        <submit-button
+            :hruid="props.hruid"
+            :language="props.language"
+            :version="props.version"
+            :group="props.group"
+            :submission-data="props.submissionData"
+            :submissions="submissions.data"
+        />
+        <div class="submit-submissions-spacer"></div>
+        <v-alert
+            icon="mdi-check"
+            :text="t('taskCompleted')"
+            type="success"
+            variant="tonal"
+            density="compact"
+            v-if="showIsDoneMessage"
+        ></v-alert>
+        <learning-object-submissions-table
+            v-if="submissionQuery.data && showSubmissionTable"
+            :all-submissions="submissions.data"
+            @submission-selected="emitSubmission"
+        />
+    </using-query-result>
+</template>
+
+<style scoped>
+    .submit-submissions-spacer {
+        height: 20px;
+    }
+</style>

frontend/src/views/learning-paths/learning-object/submissions/SubmitButton.vue

@@ -0,0 +1,98 @@
+<script setup lang="ts">
+    import { computed } from "vue";
+    import authService from "@/services/auth/auth-service.ts";
+    import type { SubmissionData } from "@/views/learning-paths/learning-object/submission-data";
+    import { Language } from "@/data-objects/language.ts";
+    import type { SubmissionDTO } from "@dwengo-1/common/interfaces/submission";
+    import { useCreateSubmissionMutation } from "@/queries/submissions.ts";
+    import { deepEquals } from "@/utils/deep-equals.ts";
+    import type { UserProfile } from "oidc-client-ts";
+    import type { LearningObjectIdentifierDTO } from "@dwengo-1/common/interfaces/learning-content";
+    import type { StudentDTO } from "@dwengo-1/common/interfaces/student";
+    import type { GroupDTO } from "@dwengo-1/common/interfaces/group";
+    import { useI18n } from "vue-i18n";
+
+    const { t } = useI18n();
+
+    const props = defineProps<{
+        submissionData?: SubmissionData;
+        submissions: SubmissionDTO[];
+        hruid: string;
+        language: Language;
+        version: number;
+        group: { forGroup: number; assignmentNo: number; classId: string };
+    }>();
+
+    const {
+        isPending: submissionIsPending,
+        // - isError: submissionFailed,
+        // - error: submissionError,
+        // - isSuccess: submissionSuccess,
+        mutate: submitSolution,
+    } = useCreateSubmissionMutation();
+
+    const isStudent = computed(() => authService.authState.activeRole === "student");
+
+    const isSubmitDisabled = computed(() => {
+        if (!props.submissionData || props.submissions === undefined) {
+            return true;
+        }
+        if (props.submissionData.some((answer) => answer === null)) {
+            return false;
+        }
+        if (props.submissions.length === 0) {
+            return false;
+        }
+        return deepEquals(JSON.parse(props.submissions[props.submissions.length - 1].content), props.submissionData);
+    });
+
+    function submitCurrentAnswer(): void {
+        const { forGroup, assignmentNo, classId } = props.group;
+        const currentUser: UserProfile = authService.authState.user!.profile;
+        const learningObjectIdentifier: LearningObjectIdentifierDTO = {
+            hruid: props.hruid,
+            language: props.language,
+            version: props.version,
+        };
+        const submitter: StudentDTO = {
+            id: currentUser.preferred_username!,
+            username: currentUser.preferred_username!,
+            firstName: currentUser.given_name!,
+            lastName: currentUser.family_name!,
+        };
+        const group: GroupDTO = {
+            class: classId,
+            assignment: assignmentNo,
+            groupNumber: forGroup,
+        };
+        const submission: SubmissionDTO = {
+            learningObjectIdentifier,
+            submitter,
+            group,
+            content: JSON.stringify(props.submissionData),
+        };
+        submitSolution({ data: submission });
+    }
+
+    const buttonText = computed(() => {
+        if (props.submissionData && props.submissionData.length === 0) {
+            return t("markAsDone");
+        }
+        return t(props.submissions.length > 0 ? "submitNewSolution" : "submitSolution");
+    });
+</script>
+
+<template>
+    <v-btn
+        v-if="isStudent && !isSubmitDisabled"
+        prepend-icon="mdi-check"
+        variant="elevated"
+        :loading="submissionIsPending"
+        :disabled="isSubmitDisabled"
+        @click="submitCurrentAnswer()"
+    >
+        {{ buttonText }}
+    </v-btn>
+</template>
+
+<style scoped></style>