node.js - ionic 2 : Test with jasmine and karma error 'ng test'

Question

我尝试按照本教程进行操作:

http://lathonez.com/2017/ionic-2-unit-testing/

当我运行“ng test”时出现这个错误:

C:\xampp\htdocs\AppFineMobile>ng test
27 03 2017 11:55:00.556:ERROR [preprocess]: Can not load "angular-cli", it is not registered!
  Perhaps you are missing some plugin?
No provider for "framework:angular-cli"! (Resolving: framework:angular-cli)
Error: No provider for "framework:angular-cli"! (Resolving: framework:angular-cli)
    at error (C:\xampp\htdocs\AppFineMobile\node_modules\di\lib\injector.js:22:12)
    at Object.get (C:\xampp\htdocs\AppFineMobile\node_modules\di\lib\injector.js:9:13)
    at Injector.get (C:\xampp\htdocs\AppFineMobile\node_modules\di\lib\injector.js:54:19)
    at C:\xampp\htdocs\AppFineMobile\node_modules\karma\lib\server.js:143:20
    at Array.forEach (native)
    at Server._start (C:\xampp\htdocs\AppFineMobile\node_modules\karma\lib\server.js:142:21)
    at Injector.invoke (C:\xampp\htdocs\AppFineMobile\node_modules\di\lib\injector.js:75:15)
    at Server.start (C:\xampp\htdocs\AppFineMobile\node_modules\karma\lib\server.js:103:18)
    at Promise (C:\xampp\htdocs\AppFineMobile\node_modules\@angular\cli\tasks\test.js:35:25)
    at Class.run (C:\xampp\htdocs\AppFineMobile\node_modules\@angular\cli\tasks\test.js:15:16)
    at Class.run (C:\xampp\htdocs\AppFineMobile\node_modules\@angular\cli\commands\test.js:99:25)
    at Class.<anonymous> (C:\xampp\htdocs\AppFineMobile\node_modules\@angular\cli\ember-cli\lib\models\command.js:134:17)
    at process._tickCallback (internal/process/next_tick.js:103:7)

我不明白我必须做什么。我首先运行了这个命令:

npm install --save-dev @angular/cli @types/jasmine @types/node jasmine-core jasmine-spec-reporter karma karma-chrome-launcher karma-cli karma-jasmine karma-jasmine-html-reporter karma-coverage-istanbul-reporter

它运行良好，我添加了教程中提到的所有文件......

在我的 test.ts 文件中，我的导入有一个错误:

import { getTestBed, TestBed } from '@angular/core/testing';

我有:找不到模块“@angular/core/testing”，但它存在于我的模块文件夹中...

有人有想法吗？

Answer 1

我认为你的问题是 karma.conf.js仍然指向旧的 angular-cli这已重命名为 @angular/cli。

如果您将 karma.conf.js 文件中的所有 angular-cli 更改为 @angular/cli 应该指向您正确的方向。

karma.conf.js 的格式也发生了变化，因此可能需要更新。

有关更新文档，请参阅 https://github.com/angular/angular-cli/wiki/stories-rc.0-update