fix: extra frontend tests

frontend/tests/utils/array-utils.test.ts

@@ -0,0 +1,50 @@
+import {copyArrayWith} from "../../src/utils/array-utils";
+import { describe, it, expect } from "vitest";
+
+describe('copyArrayWith', () => {
+    it('should replace the element at the specified index', () => {
+        const original = [1, 2, 3, 4];
+        const result = copyArrayWith(2, 99, original);
+        expect(result).toEqual([1, 2, 99, 4]);
+    });
+
+    it('should not modify the original array', () => {
+        const original = ['a', 'b', 'c'];
+        const result = copyArrayWith(1, 'x', original);
+        expect(original).toEqual(['a', 'b', 'c']); // Original remains unchanged
+        expect(result).toEqual(['a', 'x', 'c']);
+    });
+
+    it('should handle replacing the first element', () => {
+        const original = [true, false, true];
+        const result = copyArrayWith(0, false, original);
+        expect(result).toEqual([false, false, true]);
+    });
+
+    it('should handle replacing the last element', () => {
+        const original = ['apple', 'banana', 'cherry'];
+        const result = copyArrayWith(2, 'date', original);
+        expect(result).toEqual(['apple', 'banana', 'date']);
+    });
+
+    it('should work with complex objects', () => {
+        const original = [{ id: 1 }, { id: 2 }, { id: 3 }];
+        const newValue = { id: 99 };
+        const result = copyArrayWith(1, newValue, original);
+        expect(result).toEqual([{ id: 1 }, { id: 99 }, { id: 3 }]);
+        expect(original[1].id).toBe(2); // Original remains unchanged
+    });
+
+
+    it('should allow setting to undefined', () => {
+        const original = [1, 2, 3];
+        const result = copyArrayWith(1, undefined, original);
+        expect(result).toEqual([1, undefined, 3]);
+    });
+
+    it('should allow setting to null', () => {
+        const original = [1, 2, 3];
+        const result = copyArrayWith(1, null, original);
+        expect(result).toEqual([1, null, 3]);
+    });
+});

frontend/tests/utils/assignment-utils.test.ts

@@ -0,0 +1,87 @@
+import {LearningPathNode} from "@dwengo-1/backend/dist/entities/content/learning-path-node.entity";
+import {calculateProgress} from "../../src/utils/assignment-utils";
+import {LearningPath} from "../../src/data-objects/learning-paths/learning-path";
+import { describe, it, expect } from "vitest";
+
+describe("calculateProgress", () => {
+    it("should return 0 when no nodes are completed", () => {
+        const lp = new LearningPath({
+            language: "en",
+            hruid: "test-path",
+            title: "Test Path",
+            description: "Test Description",
+            amountOfNodes: 10,
+            amountOfNodesLeft: 10,
+            keywords: ["test"],
+            targetAges: { min: 10, max: 15 },
+            startNode: {} as LearningPathNode,
+        });
+
+        expect(calculateProgress(lp)).toBe(0);
+    });
+
+    it("should return 100 when all nodes are completed", () => {
+        const lp = new LearningPath({
+            language: "en",
+            hruid: "test-path",
+            title: "Test Path",
+            description: "Test Description",
+            amountOfNodes: 10,
+            amountOfNodesLeft: 0,
+            keywords: ["test"],
+            targetAges: { min: 10, max: 15 },
+            startNode: {} as LearningPathNode,
+        });
+
+        expect(calculateProgress(lp)).toBe(100);
+    });
+
+    it("should return 50 when half of the nodes are completed", () => {
+        const lp = new LearningPath({
+            language: "en",
+            hruid: "test-path",
+            title: "Test Path",
+            description: "Test Description",
+            amountOfNodes: 10,
+            amountOfNodesLeft: 5,
+            keywords: ["test"],
+            targetAges: { min: 10, max: 15 },
+            startNode: {} as LearningPathNode,
+        });
+
+        expect(calculateProgress(lp)).toBe(50);
+    });
+
+    it("should handle floating point progress correctly", () => {
+        const lp = new LearningPath({
+            language: "en",
+            hruid: "test-path",
+            title: "Test Path",
+            description: "Test Description",
+            amountOfNodes: 3,
+            amountOfNodesLeft: 1,
+            keywords: ["test"],
+            targetAges: { min: 10, max: 15 },
+            startNode: {} as LearningPathNode,
+        });
+
+        expect(calculateProgress(lp)).toBeCloseTo(66.666, 2);
+    });
+
+
+    it("should handle edge case where amountOfNodesLeft is negative", () => {
+        const lp = new LearningPath({
+            language: "en",
+            hruid: "test-path",
+            title: "Test Path",
+            description: "Test Description",
+            amountOfNodes: 10,
+            amountOfNodesLeft: -5,
+            keywords: ["test"],
+            targetAges: { min: 10, max: 15 },
+            startNode: {} as LearningPathNode,
+        });
+
+        expect(calculateProgress(lp)).toBe(150);
+    });
+});