因果报应测试在chrome中失败但在phantomjs中通过

Question

我已经在这个问题上苦苦挣扎了一段时间,似乎找不到正确的解决办法,

我正在运行一个使用angular 2的测试环境的Ionic2项目，当我使用karmas chrome launcher运行ng测试时，我得到以下错误：

开始：

07 12 201 6 11:20:50.590:Info[karma]:karma v1.2.0服务器启动于http://localhost:8888/07 12 201 6 11:20:50.591:Info[launcher]:以无限并发启动浏览器Chrome 07 12 201 6 11:20:50.682:Info[launcher]:启动浏览器Chrome 07 12 201 6 11:20:52.993:Info[Chrome 55.0.2883（Linux 0.0.0)]:连接在套接字/#wi3gg8nwmc27f0h4aaaa上，id为3728337

在0.002秒/0秒内完成

摘要：✔0测试已完成

但是当使用PhantomJS时，所有测试都运行得很好。

我正在运行的系统是：

• Linux ubuntu 16.04 LT
• 节点:6.9.2
• NPM:3.10.8

我试着重新安装了所有模块，我重新安装了OS，我在另一个linux系统上安装了project，它在相同的环境下工作得很好

我的karma.conf.js文件如下

    module.exports = function (config) {
        config.set({
            basePath: '../',
            frameworks: ['jasmine', 'angular-cli'],
            plugins: [
                require('karma-jasmine'),
                require('karma-chrome-launcher'),
                require('karma-phantomjs-launcher'),
                require('karma-remap-istanbul'),
                require('karma-mocha-reporter'),
                require('angular-cli/plugins/karma')
            ],
            files: [
                { pattern: './src/test.ts', watched: false }
            ],
            preprocessors: {
                './src/test.ts': ['angular-cli']
            },
            remapIstanbulReporter: {
                reports: {
                    html: 'coverage',
                    lcovonly: 'coverage/coverage.lcov'
                }
            },
            angularCli: {
                config: './angular-cli.json',
                environment: 'dev'
            },
            reporters: [
                'mocha', 'karma-remap-istanbul'
            ],
            customLaunchers: {
                Chrome_travis_ci: {
                    base: 'Chrome',
                    flags: ['--no-sandbox']
                }
            },
            port: 8888,
            colors: true,
            logLevel: config.LOG_INFO,
            autoWatch: true,
            browserNoActivityTimeout: 40000,
            browsers: ['Chrome'],
            singleRun: false
        });
    };

我的test.ts文件如下所示：

    import './polyfills.ts';

    import 'zone.js/dist/long-stack-trace-zone';
    import 'zone.js/dist/proxy.js';
    import 'zone.js/dist/sync-test';
    import 'zone.js/dist/jasmine-patch';
    import 'zone.js/dist/async-test';
    import 'zone.js/dist/fake-async-test';

    import { TestBed } from '@angular/core/testing';
    import { FormsModule, ReactiveFormsModule } from '@angular/forms';
    import { App, Config, Form, IonicModule, Keyboard, MenuController, NavController, Platform }  from 'ionic-angular';

    import { ConfigMock } from './test/mock';

    // Unfortunately there's no typing for the `__karma__` variable. Just declare it as any.
    declare var __karma__: any;
    declare var require: any;

    // Prevent Karma from running prematurely.
    __karma__.loaded = (): any => { /* no op */};

    Promise.all([
        System.import('@angular/core/testing'),
        System.import('@angular/platform-browser-dynamic/testing'),
    ])
    // First, initialize the Angular testing environment.
        .then(([testing, testingBrowser]) => {
            testing.getTestBed().initTestEnvironment(
                testingBrowser.BrowserDynamicTestingModule,
                testingBrowser.platformBrowserDynamicTesting()
            );
        })
        // Then we find all the tests.
        .then(() => require.context('./', true, /\.spec\.ts/))
        // And load the modules.
        .then(context => context.keys().map(context))
        // Finally, start Karma to run the tests.
        .then(__karma__.start, __karma__.error);

    export class TestUtils {

        public static beforeEachCompiler(components: Array): Promise {
            return TestUtils.configureIonicTestingModule(components)
                .compileComponents().then(() => {
                    let fixture: any = TestBed.createComponent(components[0]);
                    return {
                        fixture,
                        instance: fixture.debugElement.componentInstance,
                    };
                });
        }

        public static configureIonicTestingModule(components: Array): typeof TestBed {
            return TestBed.configureTestingModule({
                declarations: [
                    ...components,
                ],
                imports: [
                    FormsModule,
                    IonicModule,
                    ReactiveFormsModule,
                ],
                providers: [
                    {provide: App, useClass: ConfigMock},
                    {provide: Config, useClass: ConfigMock},
                    Form,
                    {provide: Keyboard, useClass: ConfigMock},
                    {provide: MenuController, useClass: ConfigMock},
                    {provide: NavController, useClass: ConfigMock},
                    {provide: Platform, useClass: ConfigMock},
                    {provide: Config, useClass: ConfigMock},
                ],
            });
        }

        // http://stackoverflow.com/questions/2705583/how-to-simulate-a-click-with-javascript
        public static eventFire(el: any, etype: string): void {
            if (el.fireEvent) {
                el.fireEvent('on' + etype);
            } else {
                let evObj: any = document.createEvent('Events');
                evObj.initEvent(etype, true, false);
                el.dispatchEvent(evObj);
            }
        }
    }

如有任何帮助或指导，我将不胜感激

Answer 1

所以我找到了答案，如果有人有同样的问题，似乎我的Chrome浏览器更新到了版本55.0.2883.75（64位），这导致了我正在编写的Angular 2 Typescript应用程序的一个错误，我通过添加

mime: {
    'text/x-typescript': ['ts','tsx']
},

到我的karma.conf.js文件中。