let masterService: MasterService; let valueServiceSpy: jasmine.SpyObj; beforeEach(() => { const spy = jasmine.createSpyObj('ValueService', ['getValue']); TestBed.configureTestingModule({ // Provide both the service-to-test and its (spy) dependency providers: [ MasterService, { provide: ValueService, useValue: spy } ] }); // Inject both the service-to-test and its (spy) dependency masterService = TestBed.get(MasterService); valueServiceSpy = TestBed.get(ValueService); });