Angular CanDeactivate Guard Unit Test Configuration

can-deactivate-guard.service.spec-config-excerpt.ts

describe('CanDeactivateGuardService', () => {
  let mockComponent: MockComponent;
  let service: CanDeactivateGuardService;

  beforeEach(() => {
    TestBed.configureTestingModule({
      providers: [
        CanDeactivateGuardService,
        MockComponent
      ]
    });
    service = TestBed.get(CanDeactivateGuardService);
    mockComponent = TestBed.get(MockComponent);
  });

  it('expect service to instantiate', () => {
    expect(service).toBeTruthy();
  });

  // more tests
});