在Angular 2中编写最基本的单元测试？

Question

问题:只要我将Angular 2导入文件,就不会执行任何测试.

问题:如何设置我的业力配置以支持角度2,以便我的测试通过正确？

或 问题:我如何设置使用es6编写的angular2的任何测试框架？

Git Repo(确保你在分支角度-2上

噶:

// Karma configuration
// Generated on Mon Jun 01 2015 14:16:41 GMT-0700 (PDT)

module.exports = function(config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jspm', 'jasmine'],


    // list of files / patterns to load in the browser
     jspm: {
        loadFiles: [
            'client/app/**/*.js'
        ]
    },


    // list of files to exclude

    plugins:[
            'karma-jasmine',
            'karma-coverage',
            'karma-jspm',
            'karma-chrome-launcher'
        ],


    // list of files to exclude
    exclude: [
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
    },


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress'],


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Chrome'],


    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: true
  });
};

JS:

"use strict";
import {ComponentAnnotation as Component, ViewAnnotation as View} from 'angular2/angular2';
import List from './list/list';

//@Component({selector: 'my-app'})
//@View({template: `<h1>{{title}}</h1>`})
class Todo{
    constructor(){
        this.title = 'Gym';
        this.list = [new List()];

    }

    setTitle(newTitle){
        this.title = newTitle;
    }
    addListItem(){
        this.list.push(new List());
    }
    removeListItem(){
        this.list.pop();
    }

}
export default Todo;

Todo.spec.js:

import Todo from './todo';
describe('Todo list:', function(){
    var todo;
    beforeEach(function(){
        todo = new Todo();
    });

    it('expect Todo to be present', function(){
        expect(todo).not.toBe(null);
    });

    it('expect Todo constructor to accept a title', function(){
         expect(todo.title).toEqual('Gym');
    });

    it('expect Todo List property to be Present', function(){
        expect(todo.list).not.toBe(null);
    })

    it('expect Todo List property to accept a title:empty', function(){

         expect(todo.list[0].title).toEqual('empty');
    });

    it('expect Todo Title property to accept a title change', function(){
         todo.setTitle('Work');
         expect(todo.title).toEqual('Work');
    });

    it('expect Todo List property to have an add function', function(){
         todo.addListItem();
         expect(todo.list.length).toEqual(2);
    });

    it('expect Todo to have a remove function', function(){
         todo.removeListItem();
         expect(todo.list.length).toEqual(0);
    })

});

预期错误:

$ karma start
INFO [karma]: Karma v0.12.36 server started at http://localhost:9876/
INFO [launcher]: Starting browser Chrome
WARN [web-server]: 404: /favicon.ico
INFO [Chrome 43.0.2357 (Mac OS X 10.10.3)]: Connected on socket 31YT5XsHM29BDG8sYXSq with id 13157663
Chrome 43.0.2357 (Mac OS X 10.10.3): Executed 0 of 0 ERROR (0.002 secs / 0 secs)

如果我删除Todo.js的角度导入

$ karma start
INFO [karma]: Karma v0.12.36 server started at http://localhost:9876/
INFO [launcher]: Starting browser Chrome
WARN [web-server]: 404: /favicon.ico
INFO [Chrome 43.0.2357 (Mac OS X 10.10.3)]: Connected on socket 7QKCB-7aTRwNsOGfYjmG with id 71239348
Chrome 43.0.2357 (Mac OS X 10.10.3): Executed 7 of 7 SUCCESS (0.008 secs / 0.005 secs)

来自GITTER的更新:

@matthewharwood尝试将捆绑的ng2文件加载到jspm Loadfiles部分.使用karma-jspm插件,您可以指定自定义路径,因此您可以覆盖角度/角度路径以指向该单个捆绑文件.它使我们的测试运行起来容易得多.我也必须包括业力babel预处理器并通过它运行我的代码.

不幸的是,我无法使负载文件正常工作:c

Answer 1

打开调试页面后,您可以看到angular告诉您它丢失了reflect-metadata包.所以我添加了一个手动导入语句,因为它app/todo/todo.js解决了这个问题:

import Reflect from 'reflect-metadata'
import {ComponentAnnotation as Component, ViewAnnotation as View} from 'angular2/angular2';
import List from './list/list';

我的输出现在是:

node_modules/.bin/karma start --single-run
INFO [karma]: Karma v0.12.36 server started at http://localhost:9876/
INFO [launcher]: Starting browser Chrome
WARN [web-server]: 404: /favicon.ico
INFO [Chrome 43.0.2357 (Mac OS X 10.10.3)]: Connected on socket cGnqva8p5bf-j7L2EVzI with id 94803307
Chrome 43.0.2357 (Mac OS X 10.10.3): Executed 7 of 7 SUCCESS (0.005 secs / 0.004 secs)