1
我正在使用角2和茉莉来尝试和测试两个服务,一个服务是依赖于另一个。我不断收到服务提供者错误。角2测试 - 服务不会注入
import {Injectable} from 'angular2/core';
@Injectable()
export class ServiceA {
constructor() {
}
}
为serviceA规格
import {it,
describe, expect,
beforeEach,
beforeEachProviders, inject}
from 'angular2/testing';
import {ServiceA} from './serviceA;
describe('ServiceA Tests',() => {
let service: ServiceA;
beforeEachProviders(() => {
return [
ServiceA
]
});
beforeEach(inject([ServiceA], (l) => {
service = l;
}));
it('Service Created',() => {
expect(service).toBeDefined();
});
});
配置类
import {OpaqueToken} from 'angular2/core';
export let APP_CONFIG = new OpaqueToken('app.config');
export interface Config {
applicationBaseUrl: string;
}
export const CONFIG: Config = {
applicationBaseUrl: 'some value',
};
服务B
import { Injectable,Inject} from 'angular2/core';
import { Http,Response,RequestOptions,Headers} from 'angular2/http';
import {APP_CONFIG, Config,CONFIG} from './app.config';
import {ServiceA} from './serviceA';
export interface IServiceB {
}
@Injectable()
export class ServiceB implements IServiceB {
constructor(private _http: Http,@Inject(APP_CONFIG)
private _config:Config,private serviceA: ServiceA) {
}
}
规格为服务B
import {it, describe, expect, beforeEach, beforeEachProviders,
inject} from 'angular2/testing';
import {ServiceB} from './serviceB';
import {ServiceA} from './serviceA';
import {HTTP_PROVIDERS, Http, Response, RequestOptions,
Headers} from 'angular2/http';
import {APP_CONFIG, Config, CONFIG} from './app.config';
import {provide} from 'angular2/core';
import 'rxjs/Rx'; // Add all operators to Observable
describe('ServiceB Tests',() => {
let serviceB: ServiceB;
let appConfig: Config;
let http: Http;
let serviceA: ServiceA;
beforeEachProviders(() => {
return [
HTTP_PROVIDERS,
provide(APP_CONFIG, { useValue: CONFIG }),
ServiceA,
ServiceB
]
});
beforeEach(inject([APP_CONFIG, Http, ServiceA,ServiceB], (ac, h, a,b) => {
appConfig = ac;
http = h;
serviceA = a;
service = b; // new ServiceB(http, appConfig, serviceA);
appConfig.applicationBaseUrl = '/';
}));
it('Http created',() => {
expect(http).toBeDefined();
});
it('service a created',() => {
expect(serviceA).toBeDefined();
});
it('App config created',() => {
expect(appConfig).toBeDefined();
});
it('service B created',() => {
expect(serviceB).toBeDefined();
});
});
服务A加载并运行良好。如果我手动创建ServiceB的东西的工作,但如果我尝试注入ServiceB我得到错误。
失败:没有ServiceA的提供者! (ServiceB-> ServiceA)
它创建ServiceA所以不知道为什么它说没有提供商。
我使用visual studio 2015,angular beta 15,typescript 1.8.9,jasmine 2.4.1,你的测试看起来是正确的,但这不是我得到的。我可以将服务A注入另一服务C但不能将服务B注入服务C –
好吧!谢谢。 PLUNK的版本和我一样吗?你有可能与我分享一些东西来重现(plunkr或github存储库)吗? –
我把我的实际服务放在这里https://plnkr.co/edit/ft7VJ8PMptJbyFdcc4RX?p=preview –