[英]How can I do synchronous test or not sharing a stub service?
我有一些需要服務的測試。 我正在使用一個名為UserServiceStub
的存根服務,我在我的SettingsComponent
注入,我正在測試它。 我在每次測試中重置了UserServiceStub,但是,測試是異步執行的,所以當我重置我的UserServiceStub(這是一個可注入和單例類)時,其他測試已經初始化了它。 我的測試很弱,斷言錯了:-(
我想為每個測試做同步測試或不同的UserServiceStub實例,但我不知道怎么做...
我試圖在UserServiceStub中定義一個名為reset()
來重置存根服務,但因為它是異步的,所以它不起作用。 另外,我在執行afterEach()
方法中, TestBed.resetTestEnvironment()
方法,但它也不起作用。
我的reset()
方法:
reset() {
this.user = { IBAN: '', SWIFT: '', paypal: '', app_idioma: '' };
}
user
,它已被其他測試覆蓋 我的beforeEach()
方法就是這個
let fixture: ComponentFixture<SettingsComponent>;
let settingsComponent: SettingsComponent;
beforeEach(() => {
TestBed.configureTestingModule({
declarations: [SettingsComponent],
imports: [],
providers: [
TranslateService,
AppService,
{ provide: MockBackend, useClass: MockBackend },
{ provide: HttpToolsService, useValue: HttpToolsServiceStub },
{ provide: BaseRequestOptions, useClass: BaseRequestOptions },
{ provide: UserService, useClass: UserServiceStub } // My stub UserService
]
});
fixture = TestBed.createComponent(SettingsComponent);
settingsComponent = fixture.componentInstance;
});
一個測試:
it('#updateSettings should doesn\'t update the user\'s settings when is wrong', fakeAsync(
inject([UserService, HttpToolsService, MockBackend],
(userService: UserServiceStub, httpToolsService: HttpToolsService, mockBackend: MockBackend) => {
userService.reset(); // It does not work...
userService.isError = true;
// However, I have reseted my user in UserServiceStub,
// this returns false because settingsComponent.getSettings().IBAN is actually 'XXX'
// instead of '' (empty) how it has to be
expect(settingsComponent.getSettings().IBAN).toBe('');
}))
);
如果你有任何疑問,我希望你的回答。
謝謝 :-)
你嘗試過使用getter / setter嗎? 這樣就不會修改UserServiceStub.user
值(如果我理解正確你想要的話)。
class UserServiceStub {
// instead of:
// this.user = { IBAN: '', SWIFT: '', paypal: '', app_idioma: '' };
// use:
get user() { return { IBAN: '', SWIFT: '', paypal: '', app_idioma: '' }; }
set user(value) { /* test something here */ }
}
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