如何解决在Angular中单击按钮时添加新值
我正在Angular 9上工作,在这里我的代码无法按我的期望工作,但是测试用例无法执行。 这是我的github链接,以获取完整代码https://github.com/mehulk05/RestuarentAdd
问题是当我在输入字段中添加任何值并按测试用例单击“提交”时,应在单击“提交”按钮时添加我的数据,并且应在视图中显示,因此,我的数据出现在视图中,但某种程度上是失败。下面是我的代码段
注意:我无法修改测试用例中写的任何内容
component.html
<div class="layout-column align-items-center mt-50">
<form #f="ngForm" (ngSubmit)="myFunction(f)">
<input type="text" class="large" name="name"
placeholder="Restaurant Name" [(ngModel)]="name"
data-test-id="restaurant-name-input" />
<input type="text" class="large" name="city"
placeholder="City Name" [(ngModel)]="city"
data-test-id="city-name-input" />
<button data-test-id="submit-button"
[disabled]="!city || !name">Submit</button>
</form>
<div class="card w-30 mt-30 pb-8">
<table class="mb-0">
<thead>
<tr>
<th>Restaurant name</th>
<th>City</th>
</tr>
</thead>
<tbody data-test-id="restaurant-list">
<tr *ngFor="let i of data">
<th>{{i.name}}</th>
<th>{{i.city}}</th>
</tr>
</tbody>
</table>
</div>
</div>
component.ts
export class RestaurantDirectory implements OnInit {
data: any[] = []
name: string
city: string
ngOnInit() {
}
myFunction(f) {
console.log(f.value)
this.data.push(f.value)
this.data = this.data.slice()
console.log(this.data)
f.reset()
}
}
Test.spec.ts
describe('RestaurantDirectory',() => {
let component: RestaurantDirectory;
let fixture: ComponentFixture<RestaurantDirectory>;
let restaurantNameInput;
let cityNameInput;
let submitBtn;
let compiled;
const pushValue = async (value1,value2) => {
restaurantNameInput.value = value1;
restaurantNameInput.dispatchEvent(new Event('change'));
restaurantNameInput.dispatchEvent(new Event('input'));
cityNameInput.value = value2;
cityNameInput.dispatchEvent(new Event('change'));
cityNameInput.dispatchEvent(new Event('input'));
submitBtn.click();
await fixture.whenStable();
};
const getByTestId = (testId: string) => {
return compiled.querySelector(`[data-test-id="${testId}"]`);
};
beforeEach(() => {
fixture = TestBed.createComponent(RestaurantDirectory);
component = fixture.componentInstance;
compiled = fixture.debugElement.nativeElement;
restaurantNameInput = getByTestId('restaurant-name-input');
cityNameInput = getByTestId('city-name-input');
submitBtn = getByTestId('submit-button');
fixture.detectChanges();
});
it('Should add new values on btn click',async () => {
const values1 = ['Hard Rock Cafe','Subway','McDonalds'];
const values2 = ['San Jose','Seattle','New York'];
await pushValue(values1[0],values2[0]);
await pushValue(values1[1],values2[1]);
await pushValue(values1[2],values2[2]);
await fixture.autoDetectChanges(true);
const restaurantList = getByTestId('restaurant-list');
console.log(restaurantList)
expect(restaurantList.children.length).toEqual(3);
expect(restaurantList.children[0].children[0].innerHTML).toEqual('Hard Rock Cafe');
expect(restaurantList.children[0].children[1].innerHTML).toEqual('San Jose');
expect(restaurantList.children[1].children[0].innerHTML).toEqual('Subway');
expect(restaurantList.children[1].children[1].innerHTML).toEqual('Seattle');
expect(restaurantList.children[2].children[0].innerHTML).toEqual('McDonalds');
expect(restaurantList.children[2].children[1].innerHTML).toEqual('New York');
});
此外,当我在测试文件中登录控制台时,它在表中显示空的html结构
所以我得到的错误是×在运行测试用例时,应该在btn click上添加新值。我不确定自己缺少什么。我也尝试了不使用模板驱动的表单方法。任何帮助都会有帮助
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