'socket.io error on connect: Error: xhr poll error' while importing zone.js when using Karma/Jasmine in Angular 2 with NativeScript 2.0 [1.7.1]

Question

在我的 Angular2 和 NativeScript 项目中使用 Karma 和 Jasmine 运行测试时遇到以下错误。测试正在正确执行，但是，此错误在控制台中不断重复。我观察到错误仅在导入 zone.js 后出现（导入它是因为它说在使用 Angular2/testing 的注入等时未定义区域）。

错误：

JS: NSUTR-socket.io: transport error JS: NSUTR-socket.io: 1 JS: NSUTR: socket.io error on connect: Error: xhr poll error JS: NSUTR-socket.io: 2 JS: NSUTR: socket.io error on connect: Error: xhr poll error 04 05 2016 12:33:42.046:WARN [NativeScript / 23 (6.0; Google Nexus 6P - 6.0.0 - API 23 - 1440x2560)]: D isconnected (1 times), because no message in 10000 ms. JS: NSUTR-socket.io: 3 JS: NSUTR: socket.io error on connect: Error: xhr poll error JS: NSUTR-socket.io: 4 JS: NSUTR: socket.io error on connect: Error: xhr poll error

我的规范（测试）文件：

import 'reflect-metadata';
import 'zone.js/dist/zone.min.js';

import {Home} from '../components/home/home';
import {inject, beforeEachProviders, it, describe, expect} from 'angular2/testing';

beforeEachProviders(() => [Home]);

describe('Home Page ActionBar Title Test', () => {
  // it('Title has text', () => {
  it('Title has text', inject([Home], (homeObj: Home) => {
      expect(homeObj.title).toBe('CapacityReview');
      // expect(true).toBe(true);
    }));
});

Package.json：

"dependencies": { "angular2": "2.0.0-beta.16", "es6-shim": "0.35.0", "nativescript-angular": "0.0.46", "nativescript-intl": "0.0.2", "nativescript-unit-test-runner": "^0.3.3", "parse5": "1.4.2", "punycode": "1.3.2", "querystring": "0.2.0", "reflect-metadata": "0.1.2", "rxjs": "5.0.0-beta.2", "tns-core-modules": "2.0.0", "url": "0.10.3", "zone.js": "0.6.12" }, "devDependencies": { "babel-traverse": "6.7.6", "babel-types": "6.7.7", "babylon": "6.7.0", "filewalker": "0.1.2", "jasmine-core": "^2.4.1", "karma": "^0.13.22", "karma-jasmine": "^0.3.8", "karma-nativescript-launcher": "^0.4.0", "lazy": "1.0.11", "nativescript-dev-typescript": "^0.3.1", "typescript": "^1.8.10" }

karma.conf.js（默认）： >

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: ['jasmine'],

// list of files / patterns to load in the browser
files: [
  'app/**/*.js'
],


// 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: [],

customLaunchers: {
  android: {
    base: 'NS',
    platform: 'android'
  },
  ios: {
    base: 'NS',
    platform: 'ios'
  },
  ios_simulator: {
    base: 'NS',
    platform: 'ios',
    arguments: ['--emulator']
  }
},

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

Answer 1

解决了！！

在我更改了 zone.js 的导入后

import 'zone.js/dist/zone.min.js';

到

import 'zone.js/dist/zone-node';

感谢 Hristo Deshev 在这方面帮助我。