fix(backend): Foute entity-structuur van leerpaden verbeterd.

Ook testen geschreven voor LearningPathRepository en LearningObjectRepository.

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

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

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

@@ -0,0 +1,24 @@
+import {Language} from "../../../src/entities/content/language";
+import {LearningPathTransition} from "../../../src/entities/content/learning-path-transition.entity";
+import {LearningPathNode} from "../../../src/entities/content/learning-path-node.entity";
+
+export function createLearningPathTransition(condition: string | null, to: LearningPathNode) {
+    let trans = new LearningPathTransition();
+    trans.condition = condition || "true";
+    trans.next = to;
+    return trans;
+}
+
+export function createLearningPathNode(
+    learningObjectHruid: string,
+    version: number,
+    language: Language,
+    startNode: boolean
+) {
+    let node = new LearningPathNode();
+    node.learningObjectHruid = learningObjectHruid;
+    node.version = version;
+    node.language = language;
+    node.startNode = startNode;
+    return node;
+}

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

@@ -0,0 +1,29 @@
+import {LearningPath, LearningPathNode} from "../../../src/entities/content/learning-path.entity";
+import {Language} from "../../../src/entities/content/language";
+import {EnvVars, getEnvVar} from "../../../src/util/envvars";
+import {createLearningPathNode, createLearningPathTransition} from "./learning-path-utils";
+
+function createNodes(): LearningPathNode[] {
+    let nodes = [
+        createLearningPathNode("u_pn_werkingnotebooks", 3, Language.Dutch, true),
+        createLearningPathNode("pn_werkingnotebooks2", 3, Language.Dutch, false),
+        createLearningPathNode("pn_werkingnotebooks3", 3, Language.Dutch, false),
+    ];
+    nodes[0].transitions.push(createLearningPathTransition("true", nodes[1]));
+    nodes[1].transitions.push(createLearningPathTransition("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();
+        return path;
+    }
+}
+
+export default example;