我想用输入测试简单的角度分量。
因此,底部的示例几乎没有为测试做准备,并且在组件中应该test
模糊功能发生,该功能显示日志,但我在控制台中没有日志。我尝试了 2 种情况:获取div 本机元素并单击它并使用blur()
函数输入本机元素。在角度应用程序中,模糊成功发生,但在测试中不起作用。我该如何解决它?
@Component({
template: '<div><input [(ngModel)]="str" (blur)="testFunc($event)" /></div>'
})
class TestHostComponent {
it: string = '';
testFunc = () => {
console.log('blur!!!');
}
}
describe('blur test', () => {
let component: TestHostComponent;
let fixture: ComponentFixture<TestHostComponent>;
let de: DebugElement;
let inputEl: DebugElement;
beforeEach(() => { /* component configuration, imports... */ }
beforeEach(() => {
fixture = TestBed.createComponent(TestHostComponent);
component = fixture.componentInstance;
de = fixture.debugElement;
inputEl = fixture.debugElement.query(By.css('input'));
fixture.detectChanges();
})
it('test', async(() => {
const inp = inputEl.nativeElement;
inp.value = 123;
inp.dispatchEvent(new Event('input'));
fixture.detectChanges();
expect(component.it).toEqual('123');
inp.blur();
const divEl = fixture.debugElement.query(By.css('div'));
divEl.nativeElement.click();
}))
}
您可以使用
dispatchEvent
来模拟模糊:
inp.dispatchEvent(new Event('blur'));
使用
dispatchFakeEvent(inp, 'blur');
这是调度假事件:
export function createFakeEvent(type: string) {
const event = document.createEvent('Event');
event.initEvent(type, true, true);
return event;
}
export function dispatchFakeEvent(node: Node | Window, type: string)
{
node.dispatchEvent(createFakeEvent(type));
}