11-http-testing.md

1. Setup

git checkout ut-14-component-output-testing

yarn

2. Run tests

yarn test farmicode --watch

3. Query ReST API

Animal search ReST API is at http://localhost:3000 and it takes a q parameter for querying animal names: http://localhost:3000/?q=dolly.

1. Import HttpClientTestingModule:

TestBed.configureTestingModule({
  imports: [HttpClientTestingModule],
});

2. Inject HttpTestingController.

3. Trigger search with AnimalSearch.search.

4. Use HttpTestingController to grab the request and flush an arbitrary response:

const request = httpController.expectOne('/');
request.flush([
  {
    type: 'dog',
    name: 'Rocket',
    bornAt: '2020-01-01',
  },
]);

You can match the request using a predicate httpController.expectOne(req => true).

5. Check the response.

6. Check that the request contains the q parameter with the right value.