unit-testing - Angular 2 + Jasmine 单元测试 - 获取错误 TS2345

Question

我关注了这个网站的单元测试(作者:Torgeir Helgevold)@:TGH http://www.syntaxsuccess.com/viewarticle/angular-2.0-unit-testing进行单元测试，但出现错误:

“错误:(15, 39) TS2345:‘FunctionWithParamTokens’类型的参数不可分配给‘(done: () => void) => void’类型的参数。”

it('should define full name2', inject([DisplayName], (displayName) => {
            displayName.firstName = 'Joe';
            displayName.lastName = 'Smith';
            displayName.generateFullName();
            expect(displayName.fullName).toBe('Joe Smith');
        }));

此网站中的代码是否已过时？谁能给我一些使用 Anuglar2 + Jasmine 学习单元测试的引用？

Answer 1

我也遇到了这个错误。问题是我没有从 angular2/testing 导入 beforeEach。

import {it, describe, expect, inject, beforeEach} from 'angular2/testing';

describe('Thing', () => {
  let thing: Thing;

  beforeEach(inject([Thing], (t: Thing) => {
    thing = t;
  }));

  it('should do something', () => {
    expect(thing.doSomething()).toBe('I did a thing');
  });
});