1
当试图测试使用翻译的服务方法(在测试之外可以正常工作)时,我收到了我从TranslateService传回的密钥,而不是翻译。单元测试中的ng2-translate返回键而不是翻译
服务被测试(简化最简单的错误娱乐):
// The proper imports are here.
@Injectable()
export class SiteHeaderService {
private _titleText: BehaviorSubject<string> = new BehaviorSubject("");
public readonly titleText: Observable<string> = this._titleText.asObservable();
constructor(private translateService: TranslateService) {}
public updateTitleTextValue(text: string) {
this._titleText.next(text);
}
public setSettingsPageTitle() {
const title = this.translateService.instant("settings-page.page-name") || "";
this.updateTitleTextValue(title);
}
}
测试本身:
import { TestBed, inject } from "@angular/core/testing";
import { SiteHeaderService } from "../site-header.service";
import { Http } from "@angular/http";
import { TranslateLoader, TranslateModule, TranslateStaticLoader } from "ng2-translate";
describe("SiteHeaderService",() => {
beforeEach(() => {
TestBed.configureTestingModule({
imports: [ TranslateModule.forRoot({
provide: TranslateLoader,
useFactory: (http: Http) => new TranslateStaticLoader(http, 'base/i18n', '.json'),
deps: [ Http ]
}) ],
providers: [ SiteHeaderService ]
});
});
it("should update the _titleText subject with the given value", inject([SiteHeaderService], (service: SiteHeaderService) => {
service.updateTitleTextValue("Firefly was canceled too soon!");
service.titleText.subscribe(title => { expect(title).toEqual("Firefly was canceled too soon!"); })
})); // Passes
it("should update all subjects to their 'settings page' state", inject([SiteHeaderService], (service: SiteHeaderService) => {
service.setSettingsPageTitle();
service.titleText.subscribe(title => { expect(title).toEqual("Settings"); })
})); // Fails: Expected 'settings-page.page-name' to equal 'Settings'.
});
希望余did't错过在上面的缩短代码的任何支架或分号,假设我没有,如果你运行这个测试,第一个将通过,第二个将返回失败:
Expected 'settings-page.page-name' to equal 'Settings'.
确定翻译键是否正确('settings-page.page-name'),如在中,它与翻译文件相匹配?粘贴键值对的某处。 –
确实,用户界面按预期加载,这只是测试有问题。 (如果我粘贴的东西,这将是一个非常简单的JSON,因为我没有在这里粘贴实际的代码)。 –