[英]Angular 2 and unit testing with services
我试图对角度2服务进行单元测试,我遇到了一些麻烦。
我的班级如下:
import { Injectable } from '@angular/core';
import {Http} from '@angular/http';
@Injectable()
export class BoardServiceService {
private http:Http;
constructor(http:Http) {
this.http = http;
}
/**
* Load a list of remote boards
* @return {object} The HTTP observable
*/
loadBoards(){
return this.http.get('http://google.com');
}
}
我的测试看起来如下。 我需要测试我为第一个测试得到一个项目的数组:
import {
beforeEachProviders,
it,
describe,
expect,
inject
} from '@angular/core/testing';
import {Http, BaseRequestOptions, Response, ResponseOptions} from '@angular/http';
import {MockBackend} from '@angular/http/testing';
import {provide} from '@angular/core';
import { BoardServiceService } from './board-service.service';
describe('BoardService Service', () => {
beforeEachProviders(() => [
BaseRequestOptions,
MockBackend,
Response,
BoardServiceService,
provide(Http, {
useFactory: (backend, defaultOptions) => new Http(backend, defaultOptions),
deps: [MockBackend, BaseRequestOptions]
})
]);
it('should get me a list of items (array type) on subscribe',
inject([BoardServiceService, MockBackend], (service: BoardServiceService, MockBackend) => {
const resultSet = [{}];
const response = new Response(new ResponseOptions({body:resultSet, status:200}));
MockBackend.connections.subscribe(connection => connection.mockRespond(response));
BoardServiceService.loadBoards().subscribe(res => expect(res.length).toEqual(1));
}));
});
当我尝试使用角度cli(ng测试)运行我的测试时,我有以下错误:
Broccoli插件:[BroccoliTypeScriptCompiler]失败:错误:Typescript发现以下错误:
C:/Project/angular2/kanboard/tmp/broccoli_type_script_compiler-input_base_path-NaWokBRS.tmp/0/src/app/service/boardService/board-service.service.spec.ts(35,27):属性'loadBoards'没有存在于'typeof BoardServiceService'类型上。
有谁知道如何使它工作?
我认为你应该使用以下内容:
service.loadBoards().subscribe(res => expect(res.length).toEqual(1));
代替
BoardServiceService.loadBoards().subscribe(res => expect(res.length).toEqual(1));
注入的实例不是类本身......
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