[英]Error: No provider for HttpService! In Karma test
我有一个角度2工具来监控服务器,刚开始测试。 当我尝试模拟httpService时,我不知道如何模拟Rest-API,所以我在线查看,修复了一些错误,现在我已经陷入了这个错误。
这里错误:
Chrome 53.0.2785 (Windows 10 0.0.0) HttpServiceFront should use an HTTP call Servers FAILED
Error: No provider for HttpServiceFront!
at NoProviderError.Error (native)
...
at drainMicroTaskQueue (webpack:///~/zone.js/dist/zone.js:368:0 <- config/karma-test-shim.js:6854:36)
Chrome 53.0.2785 (Windows 10 0.0.0): Executed 2 of 3 (1 FAILED) (skipped 1) (0.268 secs / 0.057 secs)
这是我的测试用例:
import {
ResponseOptions,
Response,
Http,
BaseRequestOptions,
RequestMethod
} from '@angular/http';
import {
TestBed, fakeAsync, inject
} from '@angular/core/testing';
import { HttpServiceFront } from '../app/services/httpServiceFront';
import { MockBackend, MockConnection } from '@angular/http/testing';
const mockHttpProvider = {
deps: [ MockBackend, BaseRequestOptions ],
useFactory: (backend: MockBackend, defaultOptions: BaseRequestOptions) => {
return new Http(backend, defaultOptions);
}
};
describe('HttpServiceFront', () => {
beforeEach(() => {
{Http, mockHttpProvider}
TestBed.configureTestingModule(
[MockBackend,
BaseRequestOptions]
)
});
it('should use an HTTP call Servers',
inject(
[HttpServiceFront, MockBackend],
fakeAsync((service: HttpServiceFront, backend: MockBackend) => {
backend.connections.subscribe((connection: MockConnection) => {
expect(connection.request.method).toBe(RequestMethod.Get);
expect(connection.request.url).toBe(
'http://localhost:8080/server');
});
service.getServers();
})));
});
谢谢您的帮助 :)
您的语法接缝错误,请检查文档 。 这样的事情应该有效:
beforeEach(() => {
TestBed.configureTestingModule({
providers: [
{ provide: Http, useValue: mockHttpProvider },
MockBackend,
BaseRequestOptions]
})
});
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.