如何修复Angular 2中的“无法读取null的注入器属性”bug？

Question

This question描述如何在beforeEachProviders函数不推荐使用后更新Angular 2。

不过话说做到这一点，我得到的错误Cannot read property 'injector' of null

我的测试是比较基本的：

import { inject, addProviders } from '@angular/core/testing'; 
import { MyComponent } from './my.component'; 

describe('Foo',() => { 
    beforeEach(() => { 
     addProviders([{ 
      provide: MyComponent, 
      useClass: MyComponent 
     }]); 
    }); 

    it('foo', inject([MyComponent], (e: MyComponent) => { 
     expect(true).toEqual(true); 
    })); 
}); 

Answer 1

addProviders也已经过时，是有利于测试床的。

import { TestBed, async } from '@angular/core/testing'; 
import { BrowserDynamicTestingModule, platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing'; 
import { MyComponent } from './my.component'; 

// This should only be called once. 
TestBed.initTestEnvironment(
    BrowserDynamicTestingModule, platformBrowserDynamicTesting()); 

describe('Foo',() => { 
    beforeEach(() => { 
     TestBed.configureTestingModule({ 
     declarations: [MyComponent], 
     }); 
     TestBed.compileComponents(); 
    }); 

    it('foo', async(() => { 
     let fixture = TestBed.createComponent(MyComponent); 
     fixture.detectChanges(); 
     expect(true).toEqual(true); 
    })); 
}); 

Angular2 RC5