I am trying to test mat snackbar. I have following code in my component.ts snackbarRef: MatSnackBarRef<TextOnlySnackBar>; constructor(private snackBar: MatSnackBar) {} onUpdate(){ this.snackbarRef = this.snackBar.open( `Please select at least one option`, 'Close', { panelClass: ['snackbar-failure'], duration: 5000, }, ); } I have following simple code in my test file component.spec.ts describe('ExampleComponent', () => { let component: ExampleComponent; let fixture: ComponentFixture<ExampleComponent>; let loader: HarnessLoader; beforeEach(waitForAsync(() => { TestBed.configureTestingModule({ declarations: [ExampleComponent], imports: [BrowserAnimationsModule, MatSnackBarModule], providers: [MatSnackBar], }).compileComponents(); })); beforeEach(() => { fixture = TestBed.createComponent(ExampleComponent); component = fixture.componentInstance; fixture.detectChanges(); loader = TestbedHarnessEnvironment.loader(fixture); }); it('should should have no snackbar', async () => { expect(component.snackbarRef).toEqual(undefined); }); }); Unfortunately above code for testing gives error TypeError: element.animate is not a function at WebAnimationsPlayer._triggerWebAnimation (node_modules/@angular/animations/fesm2020/browser.mjs:4442:33) When searching online, most solutions ask for to include either NoopAnimationsModule or BrowserAnimationsModule. Unfortunately both gives same error. How can I fix this test? Continue reading...