migration to typescript

Backend/.agent/workflows/testing.md

@@ -4,7 +4,7 @@ description: How to test backend APIs and services
 
 # Testing Workflow
 
-Follow these steps to write and run tests for the E-Learning Platform backend.
+Follow these steps to write and run tests for the E-Learning Platform backend using TypeScript and Jest.
 
 ---
 
@@ -22,10 +22,12 @@ tests/
 
 ## Step 1: Setup Test Environment
 
-Create `tests/setup.js`:
+Create `tests/setup.ts`:
+
+```typescript
+import { PrismaClient } from '@prisma/client';
+import bcrypt from 'bcrypt';
 
-```javascript
-const { PrismaClient } = require('@prisma/client');
 const prisma = new PrismaClient();
 
 beforeAll(async () => {
@@ -44,8 +46,6 @@ afterAll(async () => {
 
 async function createTestUsers() {
   // Create admin, instructor, student
-  const bcrypt = require('bcrypt');
-  
   await prisma.user.createMany({
     data: [
       {
@@ -75,11 +75,12 @@ async function createTestUsers() {
 
 ## Step 2: Write Unit Tests
 
-Create `tests/unit/course.service.test.js`:
+Create `tests/unit/course.service.test.ts`:
+
+```typescript
+import { courseService } from '../../src/services/course.service';
+import { PrismaClient } from '@prisma/client';
 
-```javascript
-const courseService = require('../../src/services/course.service');
-const { PrismaClient } = require('@prisma/client');
 const prisma = new PrismaClient();
 
 describe('Course Service', () => {
@@ -93,7 +94,7 @@ describe('Course Service', () => {
         is_free: false
       };
 
-      const course = await courseService.createCourse(courseData, 1);
+      const course = await courseService.create(courseData, 1);
 
       expect(course).toHaveProperty('id');
       expect(course.status).toBe('DRAFT');
@@ -108,7 +109,7 @@ describe('Course Service', () => {
       };
 
       await expect(
-        courseService.createCourse(courseData, 1)
+        courseService.create(courseData, 1)
       ).rejects.toThrow();
     });
   });
@@ -134,14 +135,16 @@ describe('Course Service', () => {
 
 ## Step 3: Write Integration Tests
 
-Create `tests/integration/courses.test.js`:
+Create `tests/integration/courses.test.ts`:
 
-```javascript
-const request = require('supertest');
-const app = require('../../src/app');
+```typescript
+import request from 'supertest';
+import app from '../../src/app';
 
 describe('Course API', () => {
-  let adminToken, instructorToken, studentToken;
+  let adminToken: string;
+  let instructorToken: string;
+  let studentToken: string;
 
   beforeAll(async () => {
     // Login as different users
@@ -217,7 +220,7 @@ describe('Course API', () => {
         .query({ category: 1 });
 
       expect(response.status).toBe(200);
-      response.body.data.forEach(course => {
+      response.body.data.forEach((course: any) => {
         expect(course.category_id).toBe(1);
       });
     });
@@ -229,15 +232,15 @@ describe('Course API', () => {
 
 ## Step 4: Test File Uploads
 
-Create `tests/integration/file-upload.test.js`:
+Create `tests/integration/file-upload.test.ts`:
 
-```javascript
-const request = require('supertest');
-const app = require('../../src/app');
-const path = require('path');
+```typescript
+import request from 'supertest';
+import app from '../../src/app';
+import path from 'path';
 
 describe('File Upload API', () => {
-  let instructorToken;
+  let instructorToken: string;
 
   beforeAll(async () => {
     const res = await request(app)
@@ -330,10 +333,12 @@ Update `package.json`:
     "test:coverage": "jest --coverage"
   },
   "jest": {
+    "preset": "ts-jest",
     "testEnvironment": "node",
     "coveragePathIgnorePatterns": ["/node_modules/"],
-    "setupFilesAfterEnv": ["<rootDir>/tests/setup.js"],
-    "testMatch": ["**/tests/**/*.test.js"]
+    "setupFilesAfterEnv": ["<rootDir>/tests/setup.ts"],
+    "testMatch": ["**/tests/**/*.test.ts"],
+    "moduleFileExtensions": ["ts", "tsx", "js", "jsx", "json", "node"]
   }
 }
 ```