我正在尝试使用ngUpgrade从ng1移动到ng2,并在升级期间保持我的Karma / Jasmine测试通过,但是我遇到了一个我无法弄清楚的错误.
我已将服务(数据)升级为ng2 @Injectable,并使用upgradeAdapter.downgradeNg2Provider将其注入我的ng1应用程序.它在生产代码中工作正常.
但是当我尝试在我的测试中注入它时,我得到了这个错误:
Error: [$injector:unpr] Unknown provider: ng2.InjectorProvider <- ng2.Injector <- Data
任何人都有一个在ngUpgrade中间单元测试代码的工作示例?我的堆栈是基于Webpack的.我尝试跟随并转换systemjs guide,但没有任何运气.
karma.conf.js:
module.exports = function (config) { config.set({ // base path used to resolve all patterns 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: [{ pattern: 'spec.bundle.js',watched: false }],// files to exclude exclude: [],plugins: [ require('karma-phantomjs-launcher'),require('karma-jasmine'),require('karma-webpack') ],// preprocess matching files before serving them to the browser // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor preprocessors: { 'spec.bundle.js': ['webpack'] },webpack: require('./webpack.config'),webpackServer: { noInfo: true // prevent console spamming when running in Karma! },// available reporters: https://npmjs.org/browse/keyword/karma-reporter reporters: ['progress'],// web server port port: 9876,// enable colors in the output 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,// toggle whether to watch files and rerun tests upon incurring changes autoWatch: true,// start these browsers // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher browsers: ['PhantomJS'],// if true,Karma runs tests once and exits singleRun: false }); };
spec.bundle.js
import 'angular'; import 'angular-mocks'; import 'es6-shim'; import 'reflect-Metadata'; import 'angular2/src/core/di'; import test from 'angular2/testing'; import browser from 'angular2/platform/testing/browser'; test.setBaseTestProviders(browser.TEST_BROWSER_PLATFORM_PROVIDERS,browser.TEST_BROWSER_APPLICATION_PROVIDERS); let context = require.context('./src',true,/\.spec\.js/); context.keys().forEach(context);
解决方法
实际上,你不应该使用angular mocks的模块并注入升级提供者.
它还没有记录,但在角度2的源代码中有一些线索.
>您的UpgradeAdapter实例应该是单例.
>您应该使用UpgradeAdapter.addProvider将提供程序添加到UpgradeAdapter单例.
>您应该使用UpgradeAdapter.bootstrap启动应用程序,然后获取为ready的回调函数提供的UpgradeAdapterRef实例.
>从UpgradeAdapterRef实例获取ng1Injector属性.
>使用注入器的synchronuous get方法实例化您的服务.
这是一个解决方案的plunker:
https://embed.plnkr.co/EauYut/
我们还发布了一篇关于Wishtack角度2迁移的博客文章.我们很快将在博客上填写更多关于角度2测试的帖子.
希望能帮助到你