如何修复beforeEachProviders(在RC4上弃用)

Question

我刚刚将Angular2从RC3升级到RC4 ......

import {
  expect, it, iit, xit,
  describe, ddescribe, xdescribe,
  beforeEach, beforeEachProviders, withProviders,
  async, inject
} from '@angular/core/testing';

在我的单元测试中,我有以下代码......

beforeEachProviders(() => [
    {provide: Router, useClass: MockRouter}
]);

这工作正常,但自从转到RC4后,我有一个弃用警告beforeEachProviders.

任何人都知道新的做事方式是什么？或者我应该beforeEachProviders从其他地方导入而不是'@ angular/core/testing'？

Answer 1

您需要从@ angular/core/testing导入addProviders.

代替:

beforeEachProviders(() => [
    {provide: Router, useClass: MockRouter}
]);

你会想要这样做:

beforeEach(() => {
    addProviders([
        {provide: Router, useClass: MockRouter}
    ])
});

资料来源:RC4 Changelog

Answer 2

在查看了一些其他文档后,您似乎想要:

beforeEach(() => TestBed.configureTestingModule({
        providers: [
            { provide: Service, useClass: MockService }
        ]})
    );

资料来源:https://angular.io/guide/dependency-injection