我正在尝试将测试引入到我现有的项目中,但我仍然遇到同样的错误,我认为这会阻止我运行测试。我得到的错误是
>错误在... / src / app / dashboard.component.spec.ts(15,13):找不到名称'HTMLElement'。)Chrome 57.0.2987(Mac OS X 10.12.3):执行4个成功中的4个(7.24秒/ 6.55秒)
我的dashboard.component.spec.ts看起来像这样:
import { async, ComponentFixture, TestBed } from '@angular/core/testing';
import { By } from '@angular/platform-browser';
import { DebugElement } from '@angular/core';
import { DashboardComponent } from './dashboard.component';
import { ExchangeService } from './exchange.service';
describe('DashboardComponent (templateUrl)', () => {
let comp: DashboardComponent;
let fixture: ComponentFixture<DashboardComponent>;
let spy: jasmine.Spy;
let de: DebugElement;
let el: HTMLElement; // how does this work...?
let exchangeService: ExchangeService; // the actual injected service
const testExchange = 'New York Stock Exchange';
beforeEach(async(() => {
TestBed.configureTestingModule({
declarations: [ DashboardComponent ],
providers: [ ExchangeService ],
})
.compileComponents();
}))
beforeEach(() => {
fixture = TestBed.createComponent(DashboardComponent);
comp = fixture.componentInstance; // DashboardComponent test componentInstance
// ClockService actually injected into the component
exchangeService = fixture.debugElement.injector.get(ExchangeService);
// Setup spy on the `getExchanges` method
spy = spyOn(exchangeService, 'getExchanges')
.and.returnValue(Promise.resolve(testExchange));
// query for the title <h1> by CSS element selector
de = fixture.debugElement.query(By.css('.exchange'));
el = de.nativeElement;
});
it('should not show exchange before OnInit', () => {
expect(el.textContent).toBe('', 'nothing displayed');
expect(spy.calls.any()).toBe(false, 'getExchanges not yet called');
});
it('true is true', () => expect(false).toBe(true));
});
我已经四处搜索了该错误消息,但我似乎无法在任何地方找到它。此外,最后一次测试应该失败,但我认为它甚至不会因为这个错误而编译。关于什么是错的任何线索?我最初认为这将是一个我失踪的导入,但我看不到其他人导入HTMLElements。谢谢!
修改 我的tsconfig.json看起来像这样:
{
"compileOnSave": false,
"compilerOptions": {
"outDir": "./dist/out-tsc",
"sourceMap": true,
"declaration": false,
"moduleResolution": "node",
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"target": "es5",
"lib": [
"es6",
"dom",
"es2015.iterable"
]
}
}
编辑2: 我实际上不得不按Ctrl + C,并重新启动测试以使其正确编译(我认为它会在更改文件时执行,但它没有)。谢谢!
答案 0 :(得分:9)
在测试项目的tsconfig.json
中,您应该将dom
库添加到lib数组中:
"lib": ["es6", "dom", "es2015.iterable"],
答案 1 :(得分:6)
我也输错了HTMLElement
,例如。我做了HtmlElement
。希望这可以帮助。
答案 2 :(得分:2)
我在连续测试时遇到了同样的问题但没有一次运行。测试将在初始运行时编译,但是当我更改任何代码时,编译将停止使用
Cannot find name 'HTMLElement'
错误消息,我必须执行Ctr+C
并重新启动
将tsconfig.spec.json更改为
"lib": ["es6", "dom"],
正如PierreDuc所建议的那样解决问题,我的测试套件以连续模式运行。