diff --git a/backend/tests/setup-tests.ts b/backend/tests/setup-tests.ts
index 24d46694..29f1bdc6 100644
--- a/backend/tests/setup-tests.ts
+++ b/backend/tests/setup-tests.ts
@@ -26,9 +26,9 @@ export async function setupTestApp(): Promise<void> {
     const teachers = makeTestTeachers(em);
     const learningObjects = makeTestLearningObjects(em);
     const learningPaths = makeTestLearningPaths(em);
-    const classes = makeTestClasses(em, students, teachers);
-    const assignments = makeTestAssignemnts(em, classes);
-    const groups = makeTestGroups(em, students, assignments);
+    const classes = makeTestClasses(em);
+    const assignments = makeTestAssignemnts(em);
+    const groups = makeTestGroups(em);
 
     const groups1 = [getTestGroup01(), getTestGroup02(), getTestGroup03()];
     const groups2 = [getTestGroup04()];
@@ -37,15 +37,15 @@ export async function setupTestApp(): Promise<void> {
     assignment1.groups = new Collection<Group>(groups1);
     assignment2.groups = new Collection<Group>(groups2);
 
-    const teacherInvitations = makeTestTeacherInvitations(em, teachers, classes);
-    const classJoinRequests = makeTestClassJoinRequests(em, students, classes);
-    const attachments = makeTestAttachments(em, learningObjects);
+    const teacherInvitations = makeTestTeacherInvitations(em);
+    const classJoinRequests = makeTestClassJoinRequests(em);
+    const attachments = makeTestAttachments(em);
 
     testLearningObject01.attachments = attachments;
 
-    const questions = makeTestQuestions(em, students, groups);
-    const answers = makeTestAnswers(em, teachers, questions);
-    const submissions = makeTestSubmissions(em, students, groups);
+    const questions = makeTestQuestions(em);
+    const answers = makeTestAnswers(em);
+    const submissions = makeTestSubmissions(em);
 
     await em.persistAndFlush([
         ...students,
diff --git a/backend/tests/test_assets/assignments/assignments.testdata.ts b/backend/tests/test_assets/assignments/assignments.testdata.ts
index 0a531c95..0abebf2f 100644
--- a/backend/tests/test_assets/assignments/assignments.testdata.ts
+++ b/backend/tests/test_assets/assignments/assignments.testdata.ts
@@ -1,11 +1,10 @@
 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 { testLearningPath01, testLearningPath02, testLearningPathWithConditions } from '../content/learning-paths.testdata';
 import { getClass01, getClass02, getClassWithTestleerlingAndTestleerkracht } from '../classes/classes.testdata';
 
-export function makeTestAssignemnts(em: EntityManager, classes: Class[]): Assignment[] {
+export function makeTestAssignemnts(em: EntityManager): Assignment[] {
     assignment01 = em.create(Assignment, {
         id: 21000,
         within: getClass01(),
diff --git a/backend/tests/test_assets/assignments/groups.testdata.ts b/backend/tests/test_assets/assignments/groups.testdata.ts
index 47fb126a..86ce532d 100644
--- a/backend/tests/test_assets/assignments/groups.testdata.ts
+++ b/backend/tests/test_assets/assignments/groups.testdata.ts
@@ -1,11 +1,9 @@
 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 { getAssignment01, getAssignment02, getAssignment04, getConditionalPathAssignment } from './assignments.testdata';
 import { getDireStraits, getNoordkaap, getPinkFloyd, getSmashingPumpkins, getTestleerling1, getTheDoors, getTool } from '../users/students.testdata';
 
-export function makeTestGroups(em: EntityManager, students: Student[], assignments: Assignment[]): Group[] {
+export function makeTestGroups(em: EntityManager): Group[] {
     /*
      * Group #1 for Assignment #1 in class 'id01'
      * => Assigned to do learning path 'id02'
diff --git a/backend/tests/test_assets/assignments/submission.testdata.ts b/backend/tests/test_assets/assignments/submission.testdata.ts
index 304bfbd4..5651b630 100644
--- a/backend/tests/test_assets/assignments/submission.testdata.ts
+++ b/backend/tests/test_assets/assignments/submission.testdata.ts
@@ -1,13 +1,10 @@
 import { EntityManager } from '@mikro-orm/core';
 import { Submission } from '../../../src/entities/assignments/submission.entity';
-import { Language } from '@dwengo-1/common/util/language';
-import { Student } from '../../../src/entities/users/student.entity';
-import { Group } from '../../../src/entities/assignments/group.entity';
 import { testLearningObject01, testLearningObject02, testLearningObject03 } from '../content/learning-objects.testdata';
 import { getDireStraits, getNoordkaap, getSmashingPumpkins } from '../users/students.testdata';
 import { getTestGroup01, getTestGroup02, getTestGroup04, getTestGroup05 } from './groups.testdata';
 
-export function makeTestSubmissions(em: EntityManager, students: Student[], groups: Group[]): Submission[] {
+export function makeTestSubmissions(em: EntityManager): Submission[] {
     submission01 = em.create(Submission, {
         learningObjectHruid: testLearningObject03.hruid,
         learningObjectLanguage: testLearningObject03.language,
diff --git a/backend/tests/test_assets/classes/class-join-requests.testdata.ts b/backend/tests/test_assets/classes/class-join-requests.testdata.ts
index 72a6390d..ee2f6383 100644
--- a/backend/tests/test_assets/classes/class-join-requests.testdata.ts
+++ b/backend/tests/test_assets/classes/class-join-requests.testdata.ts
@@ -1,12 +1,10 @@
 import { EntityManager } from '@mikro-orm/core';
 import { ClassJoinRequest } from '../../../src/entities/classes/class-join-request.entity';
-import { Student } from '../../../src/entities/users/student.entity';
-import { Class } from '../../../src/entities/classes/class.entity';
 import { ClassStatus } from '@dwengo-1/common/util/class-join-request';
 import { getPinkFloyd, getSmashingPumpkins, getTool } from '../users/students.testdata';
 import { getClass02, getClass03 } from './classes.testdata';
 
-export function makeTestClassJoinRequests(em: EntityManager, students: Student[], classes: Class[]): ClassJoinRequest[] {
+export function makeTestClassJoinRequests(em: EntityManager): ClassJoinRequest[] {
     classJoinRequest01 = em.create(ClassJoinRequest, {
         requester: getPinkFloyd(),
         class: getClass02(),
diff --git a/backend/tests/test_assets/classes/classes.testdata.ts b/backend/tests/test_assets/classes/classes.testdata.ts
index dde6b372..7d111c00 100644
--- a/backend/tests/test_assets/classes/classes.testdata.ts
+++ b/backend/tests/test_assets/classes/classes.testdata.ts
@@ -5,7 +5,7 @@ import { Teacher } from '../../../src/entities/users/teacher.entity';
 import { getLimpBizkit, getStaind, getTestleerkracht1 } from '../users/teachers.testdata';
 import { getDireStraits, getNoordkaap, getSmashingPumpkins, getTestleerling1, getTool } from '../users/students.testdata';
 
-export function makeTestClasses(em: EntityManager, students: Student[], teachers: Teacher[]): Class[] {
+export function makeTestClasses(em: EntityManager): Class[] {
     const studentsClass01 = [getTestleerling1()];
     const teacherClass01: Teacher[] = [getTestleerkracht1()];
 
diff --git a/backend/tests/test_assets/classes/teacher-invitations.testdata.ts b/backend/tests/test_assets/classes/teacher-invitations.testdata.ts
index ecc30dbd..b1dcd772 100644
--- a/backend/tests/test_assets/classes/teacher-invitations.testdata.ts
+++ b/backend/tests/test_assets/classes/teacher-invitations.testdata.ts
@@ -1,12 +1,10 @@
 import { EntityManager } from '@mikro-orm/core';
 import { TeacherInvitation } from '../../../src/entities/classes/teacher-invitation.entity';
-import { Teacher } from '../../../src/entities/users/teacher.entity';
-import { Class } from '../../../src/entities/classes/class.entity';
 import { ClassStatus } from '@dwengo-1/common/util/class-join-request';
 import { getFooFighters, getLimpBizkit, getStaind } from '../users/teachers.testdata';
 import { getClass01, getClass02, getClass03 } from './classes.testdata';
 
-export function makeTestTeacherInvitations(em: EntityManager, teachers: Teacher[], classes: Class[]): TeacherInvitation[] {
+export function makeTestTeacherInvitations(em: EntityManager): TeacherInvitation[] {
     teacherInvitation01 = em.create(TeacherInvitation, {
         sender: getLimpBizkit(),
         receiver: getFooFighters(),
diff --git a/backend/tests/test_assets/content/attachments.testdata.ts b/backend/tests/test_assets/content/attachments.testdata.ts
index bbbe4723..ebe15499 100644
--- a/backend/tests/test_assets/content/attachments.testdata.ts
+++ b/backend/tests/test_assets/content/attachments.testdata.ts
@@ -1,9 +1,8 @@
 import { EntityManager } from '@mikro-orm/core';
 import { Attachment } from '../../../src/entities/content/attachment.entity';
-import { LearningObject } from '../../../src/entities/content/learning-object.entity';
 import { testLearningObject01 } from './learning-objects.testdata';
 
-export function makeTestAttachments(em: EntityManager, learningObjects: LearningObject[]): Attachment[] {
+export function makeTestAttachments(em: EntityManager): Attachment[] {
     attachment01 = em.create(Attachment, {
         learningObject: testLearningObject01,
         name: 'attachment01',
diff --git a/backend/tests/test_assets/questions/answers.testdata.ts b/backend/tests/test_assets/questions/answers.testdata.ts
index aa36018e..b5a5d360 100644
--- a/backend/tests/test_assets/questions/answers.testdata.ts
+++ b/backend/tests/test_assets/questions/answers.testdata.ts
@@ -1,11 +1,9 @@
 import { EntityManager } from '@mikro-orm/core';
 import { Answer } from '../../../src/entities/questions/answer.entity';
-import { Teacher } from '../../../src/entities/users/teacher.entity';
-import { Question } from '../../../src/entities/questions/question.entity';
 import { getFooFighters, getLimpBizkit, getTestleerkracht1 } from '../users/teachers.testdata';
 import { getQuestion02, getQuestion04, getQuestion07 } from './questions.testdata';
 
-export function makeTestAnswers(em: EntityManager, teachers: Teacher[], questions: Question[]): Answer[] {
+export function makeTestAnswers(em: EntityManager): Answer[] {
     answer01 = em.create(Answer, {
         author: getFooFighters(),
         toQuestion: getQuestion02(),
diff --git a/backend/tests/test_assets/questions/questions.testdata.ts b/backend/tests/test_assets/questions/questions.testdata.ts
index 3a4e2eb7..2583ba72 100644
--- a/backend/tests/test_assets/questions/questions.testdata.ts
+++ b/backend/tests/test_assets/questions/questions.testdata.ts
@@ -1,12 +1,10 @@
 import { EntityManager } from '@mikro-orm/core';
 import { Question } from '../../../src/entities/questions/question.entity';
-import { Student } from '../../../src/entities/users/student.entity';
-import { Group } from '../../../src/entities/assignments/group.entity';
 import { getDireStraits, getNoordkaap, getTestleerling1, getTool } from '../users/students.testdata';
 import { testLearningObject01, testLearningObject04, testLearningObject05, testLearningObjectMultipleChoice } from '../content/learning-objects.testdata';
 import { getGroup1ConditionalLearningPath, getTestGroup01, getTestGroup02 } from '../assignments/groups.testdata';
 
-export function makeTestQuestions(em: EntityManager, students: Student[], groups: Group[]): Question[] {
+export function makeTestQuestions(em: EntityManager): Question[] {
     question01 = em.create(Question, {
         learningObjectLanguage: testLearningObject05.language,
         learningObjectVersion: testLearningObject05.version,
diff --git a/backend/tests/test_assets/users/students.testdata.ts b/backend/tests/test_assets/users/students.testdata.ts
index d656a6c2..188c8226 100644
--- a/backend/tests/test_assets/users/students.testdata.ts
+++ b/backend/tests/test_assets/users/students.testdata.ts
@@ -28,29 +28,29 @@ export function getTestleerling1(): Student {
 }
 
 export function getNoordkaap(): Student {
-    return testStudents.find((it) => it.username == 'Noordkaap')!;
+    return testStudents.find((it) => it.username === 'Noordkaap')!;
 }
 
 export function getDireStraits(): Student {
-    return testStudents.find((it) => it.username == 'DireStraits')!;
+    return testStudents.find((it) => it.username === 'DireStraits')!;
 }
 
 export function getTool(): Student {
-    return testStudents.find((it) => it.username == 'Tool')!;
+    return testStudents.find((it) => it.username === 'Tool')!;
 }
 
 export function getSmashingPumpkins(): Student {
-    return testStudents.find((it) => it.username == 'SmashingPumpkins')!;
+    return testStudents.find((it) => it.username === 'SmashingPumpkins')!;
 }
 
 export function getPinkFloyd(): Student {
-    return testStudents.find((it) => it.username == 'PinkFloyd')!;
+    return testStudents.find((it) => it.username === 'PinkFloyd')!;
 }
 
 export function getTheDoors(): Student {
-    return testStudents.find((it) => it.username == 'TheDoors')!;
+    return testStudents.find((it) => it.username === 'TheDoors')!;
 }
 
 export function getNirvana(): Student {
-    return testStudents.find((it) => it.username == 'Nirvana')!;
+    return testStudents.find((it) => it.username === 'Nirvana')!;
 }