Ionic2，Jasmine，Karma单元测试

我们正在为Ionic2项目建立一个单元测试框架 在运行npm测试时，我们面临以下错误。 我在下面给出了src/.ts和src/.spec.ts以及cmd窗口错误 请帮忙解决

Chrome 55.0.2883 Windows 8.1 0.0.0错误：错误{拒绝：'失败 若要加载app.html'，promise:ZoneAwarePromise{{uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu状态：0， __zone_symbol_值：'未能加载app.html'}，z one:zone{{u属性：对象{}，_父对象：null，_名称：， _zoneDelegate:zoneDelegate{t askCounts:…，zone:…，\u parentDelegate:…，\u forkZS:…，\u forkDlgt:…，\u interceptZS:…，\u interceptDlgt:…，\u invokeZS:…，\u invokeDlgt:。。。， _handleErrorZS:…，\u handleErrorDlgt:…，\u scheduleTaskZS:…，\u scheduleTaskDlgt:…，\u invokeTaskZS:…，\u invokeTaskDlgt:。。。， _cancelTaskZS:…，\u cancelTaskDlgt:…，\u hasTaskZS:…，\u hasTaskDlgt:…}，任务：区域任务{runCount:1，键入：'microTask'，区域：区域{属性：…，\u父级：…，\u名称：…，\u区域egate: …}，来源：'Promise.then'，数据：未定义，调度fn：未定义， cancelFn:null，ca llback:function{…}，invoke:function{ …}}}

Chrome 55.0.2883 Windows 8.1 0.0.0仪表板服务应返回 非空数组失败类型错误：无法读取属性“assertPresent” 在resetFakeAsyncZone处未定义的 C:/Users/user/AppData/Local/Temp/karma类型脚本包 -66485eOt1ZMUGTWZ.js:143884:22 at对象。C:/Users/user/AppData/Local/Temp/karma类型脚本包 -66485eOt1ZMUGTWZ.js:144536:13错误：异步测试帮助程序需要ProxyZoneSpec，但找不到。请确保 您的环境包括runInTestZone中的zone.js/dist/proxy.js C:/Users/user/AppData/Local/Temp/karma-typescript-bundle-6648 5eOt1ZMUGTWZ.js:143659:19 at对象。 C:/Users/user/AppData/Local/Temp/karma类型脚本包 -66485eOt1ZMUGTWZ.js:143633:17 TypeError:无法读取对象处null的属性“getData”。

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src/pages/dashboard/dashboard.spec.ts:47:35

在我的karma.conf中，我将一些附加文件加载到浏览器中：

// list of files / patterns to load in the browser
    files: [
      '../node_modules/zone.js/dist/zone.js', // 'Uncaught ReferenceError: Zone is not defined'
      '../node_modules/zone.js/dist/proxy.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      '../node_modules/zone.js/dist/sync-test.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      '../node_modules/zone.js/dist/jasmine-patch.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      // ANY OTHER FILES TO LOAD FOR YOUR TESTS
    ],

import { Component, OnInit } from '@angular/core';
import { NavController, NavParams } from 'ionic-angular';
import { AzureDatasync } from '../../app/providers/azure-datasync';
import 'zone.js/dist/async-test';

/*
  Generated class for the Dashboard page.

  See http://ionicframework.com/docs/v2/components/#navigation for more info on
  Ionic pages and navigation.
*/
@Component({
  selector: 'page-dashboard',
  templateUrl: 'dashboard.html'
})
export class DashboardPage implements OnInit {
  todays: any ;
  ticklers: any;
  cases: any;
  constructor(public navCtrl: NavController, public navParams: NavParams, public datasync: AzureDatasync) {}

  ngOnInit(){
    this.getData();
  }

  getData() {

    this.todays = [
        {type: "abc", name: "test", duration: "9.30 AM - 10.00 AM"},
        {type: "def", name: "test2", duration: "12.45 AM - 3.10 PM"}
    ];

    this.ticklers = [
        {name: "abc", description: "A Court "},
        {name: "def", description: "dd"}
    ];

    this.cases = [
        {name: "Msh", duedate: "Due on 7th Dec", priority: "PsI", timeduration: "24hrs", imgurl:"_blank.png"},
        {name: "ss Smith", duedate: "Due on 11th Dec", priority: "Pris", timeduration: "30 mins ", imgurl:"./person_blank.png"}
    ];
  }

}

// list of files / patterns to load in the browser
    files: [
      '../node_modules/zone.js/dist/zone.js', // 'Uncaught ReferenceError: Zone is not defined'
      '../node_modules/zone.js/dist/proxy.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      '../node_modules/zone.js/dist/sync-test.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      '../node_modules/zone.js/dist/jasmine-patch.js', // 'TypeError: Cannot read property 'assertPresent' of undefined'
      // ANY OTHER FILES TO LOAD FOR YOUR TESTS
    ],