Error: StaticInjectorError(DynamicTestModule)[NotificationsComponent

Question

Full Error when run ng test:

Error: StaticInjectorError(DynamicTestModule)[NotificationsComponent

AuthService]: StaticInjectorError(Platform: core)[NotificationsComponent AuthService]:

NullInjectorError: No provider for AuthService!

Expected undefined to be truthy.

Error: Expected undefined to be truthy.

at stack (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:2176:17)

at buildExpectationResult (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:2146:14)

at Spec.expectationResultFactory (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:766:18)

at Spec.addExpectationResult (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:444:34)

at Expectation.addExpectationResult (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:710:21)

at Expectation.toBeTruthy (http://localhost:9876/base/node_modules/jasmine-core/lib/jasmine-core/jasmine.js:2099:12)

at Object. (http://localhost:9876/_karma_webpack_/webpack:/C:/../webTest/src/app/components/notifications/notifications.component.spec.ts:97:23)

at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:9876/_karma_webpack_/webpack:/C:/C:/../webTest/node_modules/zone.js/dist/zone.js:388:1)

at ProxyZoneSpec.webpackJsonp.../../../../zone.js/dist/proxy.js.ProxyZoneSpec.onInvoke (http://localhost:9876/_karma_webpack_/webpack:/C:/../webTest/node_modules/zone.js/dist/proxy.js:79:1)

at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invoke (http://localhost:9876/_karma_webpack_/webpack:/C:/../webTest/node_modules/zone.js/dist/zone.js:387:1)

my code service:

describe('Component: Auth', () => {


    let component: AuthService;

    let fixture: ComponentFixture<AuthService>;


    beforeEach(() => {

        TestBed.configureTestingModule({

            declarations: [AuthService]

        })

        fixture = TestBed.createComponent(AuthService);

        component = fixture.componentInstance;

    });

});

Can you ask me, what is the problem?

Sangwin Gawande Sangwin Gawande · Accepted Answer · 2018-05-21T13:04:29

Use it like below :

Services should be in providers array.

describe('Component: Auth', () => {
let component: AuthService;
let fixture: ComponentFixture<AuthService>;

  beforeEach(() => {
    TestBed.configureTestingModule({
        declarations: [],
        providers: [AuthService] // **Like this.**
    })
    fixture = TestBed.createComponent(AuthService);
    component = fixture.componentInstance;
  });

});

Error: StaticInjectorError(DynamicTestModule)[NotificationsComponent

2 Answers