以下是示例代码,用于解决此问题。
describe('MyComponent', () => {
let component: MyComponent;
let fixture: ComponentFixture
beforeEach(async(() => { TestBed.configureTestingModule({ declarations: [ MyComponent ] }) .compileComponents(); }));
beforeEach(() => { fixture = TestBed.createComponent(MyComponent); component = fixture.componentInstance; fixture.detectChanges(); });
it('should fail if value is 303', () => { component.value = 303; fixture.detectChanges(); expect(component.isFail()).toBeTruthy(); });
it('should fail if value is 304', () => { component.value = 304; fixture.detectChanges(); expect(component.isFail()).toBeTruthy(); }); });
在这个示例中,我们定义了一个“should fail if value is 303”测试和一个“should fail if value is 304”测试,这两个测试都验证了当值为303或304时组件的isFail方法是否返回true。如果这两个测试其中任意一个失败,就会在测试运行时得到即时反馈。这样,我们就能够快速识别和解决任何问题,从而改善我们的应用程序。