fabric8-ui platform https://github.com/fabric8-ui/fabric8-ui/blob/master/src/app/shared/api-locator.service.spec.ts

api-locator.service.spec.ts

 it('Ensure APILocatorService is injectable', function() {
    TestBed.configureTestingModule({
      declarations: [TestAPILocatorServiceComponent],
      providers: [ApiLocatorService, Fabric8UIConfig, ProviderService]
    });
    var fixture = TestBed.createComponent(TestAPILocatorServiceComponent);
    var comp = fixture.componentInstance;
    expect(comp.apilocator).toBeTruthy();
  });