本文整理汇总了TypeScript中@angular/core/testing.withProviders函数的典型用法代码示例。如果您正苦于以下问题：TypeScript withProviders函数的具体用法？TypeScript withProviders怎么用？TypeScript withProviders使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了withProviders函数的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: describe
describe('Http-HeroService (mockBackend)', () => {
beforeEachProviders(() => [
HTTP_PROVIDERS,
{ provide: XHRBackend, useClass: MockBackend }
]);
it('can instantiate service when inject service',
withProviders(() => [HeroService])
.inject([HeroService], (service: HeroService) => {
expect(service instanceof HeroService).toBe(true);
}));
it('can instantiate service with "new"', inject([Http], (http: Http) => {
expect(http).not.toBeNull('http should be provided');
let service = new HeroService(http);
expect(service instanceof HeroService).toBe(true, 'new service should be ok');
}));
it('can provide the mockBackend as XHRBackend',
inject([XHRBackend], (backend: MockBackend) => {
expect(backend).not.toBeNull('backend should be provided');
}));
describe('when getHeroes', () => {
let backend: MockBackend;
let service: HeroService;
let fakeHeroes: HeroData[];
let response: Response;
beforeEach(inject([Http, XHRBackend], (http: Http, be: MockBackend) => {
backend = be;
service = new HeroService(http);
fakeHeroes = makeHeroData();
let options = new ResponseOptions({status: 200, body: {data: fakeHeroes}});
response = new Response(options);
}));
it('should have expected fake heroes (then)', async(inject([], () => {
backend.connections.subscribe((c: MockConnection) => c.mockRespond(response));
service.getHeroes().toPromise()
// .then(() => Promise.reject('deliberate'))
.then(heroes => {
expect(heroes.length).toEqual(fakeHeroes.length,
'should have expected no. of heroes');
});
})));
it('should have expected fake heroes (Observable.do)', async(inject([], () => {
backend.connections.subscribe((c: MockConnection) => c.mockRespond(response));
service.getHeroes()
.do(heroes => {
expect(heroes.length).toEqual(fakeHeroes.length,
'should have expected no. of heroes');
})
.toPromise();
})));
it('should be OK returning no heroes', async(inject([], () => {
let resp = new Response(new ResponseOptions({status: 200, body: {data: []}}));
backend.connections.subscribe((c: MockConnection) => c.mockRespond(resp));
service.getHeroes()
.do(heroes => {
expect(heroes.length).toEqual(0, 'should have no heroes');
})
.toPromise();
})));
it('should treat 404 as an Observable error', async(inject([], () => {
let resp = new Response(new ResponseOptions({status: 404}));
backend.connections.subscribe((c: MockConnection) => c.mockRespond(resp));
service.getHeroes()
.do(heroes => {
fail('should not respond with heroes');
})
.catch(err => {
expect(err).toMatch(/Bad response status/, 'should catch bad response status code');
return Observable.of(null); // failure is the expected test result
})
.toPromise();
})));
});
});示例2: describe
describe('HeroService', () => {
beforeEach(() => {
addProviders([
HTTP_PROVIDERS,
HeroService,
{ provide: XHRBackend, useClass: MockBackend }
]);
});
it('can instantiate service when inject service',
withProviders(() => [HeroService])
.inject([HeroService], (service: HeroService) => {
expect(service instanceof HeroService).toBe(true);
}));
it('can instantiate service with "new"', inject([Http], (http: Http) => {
expect(http).not.toBeNull('http should be provided');
let service = new HeroService(http);
expect(service instanceof HeroService).toBe(true, 'new service should be ok');
}));
it('can provide the mockBackend as XHRBackend',
inject([XHRBackend], (backend: MockBackend) => {
expect(backend).not.toBeNull('backend should be provided');
}));
describe('getHeroes', () => {
let backend: MockBackend;
let service: HeroService;
let fakeHeroes: HeroData[];
let response: Response;
beforeEach(inject([Http, XHRBackend], (http: Http, be: MockBackend) => {
backend = be;
service = new HeroService(http);
fakeHeroes = makeHeroData();
let options = new ResponseOptions({ status: 200, body: fakeHeroes });
response = new Response(options);
}));
it('should have expected fake heroes', async(inject([], () => {
backend.connections.subscribe((c: MockConnection) => c.mockRespond(response));
service.getHeroes()
// .then(() => Promise.reject('deliberate'))
.then(heroes => {
expect(heroes.length).toEqual(fakeHeroes.length,
'should have expected no. of heroes');
});
})));
it('should be OK returning no heroes', async(inject([], () => {
let resp = new Response(new ResponseOptions({ status: 200, body: [] }));
backend.connections.subscribe((c: MockConnection) => c.mockRespond(resp));
service.getHeroes()
.then(heroes => {
expect(heroes.length).toEqual(0, 'should have no heroes');
});
})));
});
describe('save', () => {
it('should call PUT when hero has id', async(inject([HeroService, XHRBackend], (heroService: HeroService, mockBackend: MockBackend) => {
var hero = new Hero();
hero.name = 'George';
hero.id = 5;
var calledRequestMethod: RequestMethod;
mockBackend.connections.subscribe((c: MockConnection) => {
calledRequestMethod = c.request.method;
let options = new ResponseOptions({ status: 200, body: hero });
var response = new Response(options);
c.mockRespond(response);
});
heroService.save(hero)
.then(() => {
expect(calledRequestMethod).toBe(RequestMethod.Put);
});
})));
it('should call POST when hero has no id', async(inject([HeroService, XHRBackend], (heroService: HeroService, mockBackend: MockBackend) => {
var hero = new Hero();
hero.name = 'George';
var calledRequestMethod: RequestMethod;
mockBackend.connections.subscribe((c: MockConnection) => {
calledRequestMethod = c.request.method;
hero.id = 5;
let options = new ResponseOptions({ status: 200, body: hero });
var response = new Response(options);
c.mockRespond(response);
});
heroService.save(hero)
.then(() => {
expect(calledRequestMethod).toBe(RequestMethod.Post);
});
})));
});
});