How do you handle HTTP requests in Angular unit tests?

Short answer: Use HttpClientTestingModule and HttpTestingController to mock and control HTTP requests.

Example code

beforeEach(() => { TestBed.configureTestingModule({ imports: [HttpClientTestingModule] }); httpTestingController = TestBed.inject(HttpTestingController); }); it('should call GET API', () => { service.getData().subscribe(data => { expect(data).toEqual(mockData); }); const req = httpTestingController.expectOne('api/data'); expect(req.request.method).toBe('GET'); req.flush(mockData); httpTestingController.verify(); });

Real-world example (ShopNest)

ShopNest admin can be built in Angular with modules/components, services for API calls, and reactive forms for product edit.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.