将应用程序升级到rc-7并运行我的单元测试以确保没有任何损坏之后,我在大约一半的单元测试中得到了此错误消息。ZoneAwarePromise已被覆盖
“错误:Zone.js检测到ZoneAwarePromise'(window | global).Promise'已被覆盖。 最有可能的原因是Promise polyfill已在Zone.js(Polyfilling Promise api没有必要(第21行)“
我可以想到的最接近的东西是我能想到的最接近我的东西(如果你必须加载一个,请在加载zone.js之前加载它)(node_modules/zone.js/dist/zone.js是我通过手动返回observables在单元测试中嘲笑来自http调用的响应。
这是一个使用Jasmine和Karma进行单元测试的Angular2应用程序。
UPDATE 所以它似乎这可能是一个加载顺序问题,因为每个错误消息,但我不加载任何地方polyfills我可以确定,除非我不小心抓住他们。我已附加了我的karma.conf.js和systemjs.conf.js以帮助查找错误。
Karma.conf.js
module.exports = function(config) {
var gulpConfig = require('../gulp/config')();
/**
* List of npm packages that imported via `import` syntax
*/
var dependencies = [
'@angular',
'lodash',
'rxjs'
];
var configuration = {
basePath: '../../',
browserNoActivityTimeout: 20000,
frameworks: ['jasmine'],
browsers: ['PhantomJS'],
reporters: ['progress', 'coverage'],
preprocessors: {},
// Generate json used for remap-istanbul
coverageReporter: {
includeAllSources: true,
dir: 'coverage/appCoverage/remap/',
reporters: [
{ type: 'json', subdir: 'report-json' }
]
},
files: [
'node_modules/reflect-metadata/Reflect.js',
'node_modules/zone.js/dist/zone.js',
'node_modules/zone.js/dist/long-stack-trace-zone.js',
'node_modules/zone.js/dist/proxy.js',
'node_modules/zone.js/dist/sync-test.js',
'node_modules/zone.js/dist/jasmine-patch.js',
'node_modules/zone.js/dist/async-test.js',
'node_modules/zone.js/dist/fake-async-test.js',
'node_modules/angular/angular.js',
'node_modules/core-js/client/shim.min.js',
'node_modules/systemjs/dist/system.src.js'
],
// proxied base paths
proxies: {
// required for component assests fetched by Angular's compiler
"/src/": "/base/src/",
"/app/": "/base/src/app/",
"/node_modules/": "/base/node_modules/"
},
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: true,
//browserNoActivityTimeout: 100000
};
configuration.preprocessors[gulpConfig.tmpApp + '**/!(*.spec)+(.js)'] = ['coverage'];
configuration.preprocessors[gulpConfig.tmpApp + '**/*.js'] = ['sourcemap'];
configuration.preprocessors[gulpConfig.tmpTest + '**/*.js'] = ['sourcemap'];
var files = [
gulpConfig.tmpTest + 'test-helpers/global/**/*.js',
gulpConfig.src + 'systemjs.conf.js',
'config/test/karma-test-shim.js',
createFilePattern(gulpConfig.tmpApp + '**/*.js', { included: false }),
createFilePattern(gulpConfig.tmpTest + 'test-helpers/*.js', { included: false }),
createFilePattern(gulpConfig.app + '**/*.html', { included: false }),
createFilePattern(gulpConfig.app + '**/*.css', { included: false }),
createFilePattern(gulpConfig.app + '**/*.ts', { included: false, watched: false }),
createFilePattern(gulpConfig.tmpApp + '**/*.js.map', { included: false, watched: false })
];
configuration.files = configuration.files.concat(files);
dependencies.forEach(function(key) {
configuration.files.push({
pattern: 'node_modules/' + key + '/**/*.js',
included: false,
watched: false
});
});
if (process.env.APPVEYOR) {
configuration.browsers = ['IE'];
configuration.singleRun = true;
configuration.browserNoActivityTimeout = 90000; // Note: default value (10000) is not enough
}
config.set(configuration);
// Helpers
function createFilePattern(path, config) {
config.pattern = path;
return config;
}
}
UPDATE 我的解决方案涉及到确保我所有的zone.js文件被加载上次在karma.conf.js。我猜想我已经包含的其他东西还包括polyfill,但是正在zone.js之后加载,所以错误被提出。移动zone.js到最后,一切正常。
不幸的是,我不包括系统正-pollyfills.js :(我会继续和张贴我的karma.conf.js和system.conf。 js –
但是,将所有我的zone.js文件移动到列表中的最后,所有内容都已解决。感谢您指点我正确的方向。 –