[英]Trouble unit testing angular reactive form control reset from button click
[英]Angular 4 - Unit testing using Jasmine - Button click code showing error
我是茉莉新手。 用Angular 4編寫代碼。我想測試一個按鈕。 我在規格文件中編寫了以下代碼。 這是多文件上傳的功能。 並且在選擇文件后,我們允許用戶上傳文件。
import {
async,
ComponentFixture,
TestBed
} from '@angular/core/testing';
import {
UploaddocumentComponent
} from './uploaddocument.component';
describe('UploaddocumentComponent', () => {
let component: UploaddocumentComponent;
let fixture: ComponentFixture < UploaddocumentComponent > ;
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [UploaddocumentComponent]
})
.compileComponents();
}));
beforeEach(() => {
fixture = TestBed.createComponent(UploaddocumentComponent);
component = fixture.componentInstance;
fixture.detectChanges();
});
// it('should create', () => {
// expect(component).toBeTruthy();
// });
it('should', async(() => {
spyOn(component, 'uploadFileByRest');
let button = fixture.debugElement.nativeElement.querySelector('button');
button.click();
fixture.whenStable().then(() => {
expect(component.uploadFileByRest).toHaveBeenCalled();
})
}));
});
在PhantomJS瀏覽器中,看到以下問題。 怎么解決?
invoke@webpack:///~/zone.js/dist/zone.js:490:0 <- src/polyfills.ts:3454:
PhantomJS 2.1.1 (Windows 7 0.0.0): Executed 1 of 1 (1 FAILED) ERROR (0.981
secs/ 0.127 secs)
HTML
<button pButton type="button" icon="fa-check" class="form-control"
(click)="uploadFileByRest(); file.value = ''" [disabled]="!isFileSelected"
label="Upload"></button>
TS
doUploadByRest() {
//Saving file to Alfresco and DB
}
Chrome顯示為
HTML 21行顯示了我認為的問題isRequestFromView-如何為測試代碼提供輸入?
21 line <div class="row" *ngIf="!isRequestFromView">
<p-messages [(value)]="msgs"></p-messages>
<div class="col-md-4">
<label>Add File:</label>
<input multiple type="file" name="filedata" class="form-control" #file (change)="fileChangeEvent(file.files)" />
</div>
<div class="col-md-2" style="margin-top:25px">
<button pButton type="button" icon="fa-check" class="form-control" (click)="uploadFile(); file.value = ''" [disabled]="!isFileSelected"
label="Upload"></button>
</div>
</div>
嘗試將PrimeNG組件Messages
添加到聲明中:
import {Messages} from "primeng/primeng";
...
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [UploaddocumentComponent, Message]
})
.compileComponents();
}));
這是因為Jasmine測試不會自動導入您的依賴項。 這使您可以更好地控制測試環境,從而可以根據需要模擬組件。
如果這給您帶來進一步的錯誤,請嘗試模擬該組件:
@Component({
selector: 'p-messages',
template: ''
})
class MyMessageMock {
}
...
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [UploaddocumentComponent, MyMessageMock]
})
.compileComponents();
}));
這將使您在<p-messages>
元素所在的位置留下一個空組件,這不會影響您的測試,因為您正在完全測試其他內容。
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