✅ [WIP] Add unit tests

Makefile

@@ -28,6 +28,12 @@ generate-migrations:
 run-migrations:
 	$(DOCKER_COMPOSE_CMD) exec api-dev sh -c "npm run migration:run"
 
+test:
+	$(DOCKER_COMPOSE_CMD) exec api-dev sh -c "npm run test"
+
+cov:
+	$(DOCKER_COMPOSE_CMD) exec api-dev sh -c "npm run test:cov"
+
 build: ## Build the Docker images
 ifndef PROFILE
 	@$(MAKE) list-profiles

src/app.controller.spec.ts

@@ -5,18 +5,57 @@ import { AppService } from './app.service';
 describe('AppController', () => {
   let appController: AppController;
 
+  const mockAppService = {
+    getHello: jest.fn().mockReturnValue('Hello World!'),
+    getStatus: jest.fn().mockReturnValue({ online: true }),
+    getOpenSourceLink: jest.fn().mockReturnValue({
+      visibility: 'Public',
+      ownership: '@SebastienCozeDev',
+      link: 'https://github.com/SebastienCozeDev/task-flow-api',
+    }),
+  };
+
   beforeEach(async () => {
     const app: TestingModule = await Test.createTestingModule({
       controllers: [AppController],
-      providers: [AppService],
+      providers: [
+        {
+          provide: AppService,
+          useValue: mockAppService,
+        },
+      ],
     }).compile();
 
     appController = app.get<AppController>(AppController);
+    jest.clearAllMocks();
+  });
+
+  it('should be defined', () => {
+    expect(appController).toBeDefined();
   });
 
-  describe('root', () => {
+  describe('getHello', () => {
     it('should return "Hello World!"', () => {
       expect(appController.getHello()).toBe('Hello World!');
+      expect(mockAppService.getHello).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('getStatus', () => {
+    it('should return the application status', () => {
+      expect(appController.getStatus()).toEqual({ online: true });
+      expect(mockAppService.getStatus).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  describe('getOpenSourceLink', () => {
+    it('should return the repository information', () => {
+      expect(appController.getOpenSourceLink()).toEqual({
+        visibility: 'Public',
+        ownership: '@SebastienCozeDev',
+        link: 'https://github.com/SebastienCozeDev/task-flow-api',
+      });
+      expect(mockAppService.getOpenSourceLink).toHaveBeenCalledTimes(1);
     });
   });
 });

src/app.service.ts

@@ -14,7 +14,7 @@ export class AppService {
 
   getOpenSourceLink(): { visibility: string, ownership: string, link: string } {
     return {
-      visibility: "Private",
+      visibility: "Public",
       ownership: "@SebastienCozeDev",
       link: "https://github.com/SebastienCozeDev/task-flow-api",
     }