Ben*_*ema 21 javascript ecmascript-6 karma-runner webpack babeljs
/编辑:我完全剥离了配置,以显示问题.我还向GitHub上传了一个可以结账的工作项目,所以你可以亲自看看.
GitHub上有问题的用例:webpack-angular15-es6-karma(下载7z档案)
npm install
npm run build
npm run test
我知道有几个相关的问题,但世界变化如此之快,有很多因素/依赖关系,我无法用当前提出的解决方案解决这个问题.
我有一个webpack配置来处理我的所有源代码,它工作得很好.
为了进行测试,我重用该配置来处理一个加载源和测试文件的中央入口脚本.我找不到另一种方法将源代码中的模块导入我的测试代码进行测试.
Karma构建了很好的重用我的webpack配置,但浏览器一打开就报告错误.
源代码使用ES6导入和webpack require语句.
的package.json:
npm run build >>> webpack --config webpack.config.js --display-error-details --colors --progress
npm run test >>> karma start --single-run --no-auto-watch karma.config.js
{
"name": "ProblemDemo",
"scripts": {
"build": "rimraf dist && webpack --config webpack.config.js --display-error-details --colors --progress",
"test": "karma start --single-run --no-auto-watch karma.config.js"
},
"dependencies": {
"angular": "^1.5.7",
"angular-filter": "^0.5.8"
},
"devDependencies": {
"webpack": "1.13.1",
"html-loader": "0.4.3",
"babel-loader": "5.3.2",
"html-webpack-plugin": "1.6.1",
"rimraf": "^2.5.3",
"run-sequence": "1.1.2",
"jasmine-core": "^2.4.1",
"karma": "^0.13.19",
"karma-chrome-launcher": "^0.2.2",
"karma-coverage": "^0.5.3",
"karma-jasmine": "^0.3.6",
"karma-webpack": "^1.7.0",
"loader-utils": "^0.2.12"
}
}
karma.config.js:
module.exports = function (config) {
config.set({
browsers: ['Chrome'],
coverageReporter: {
reporters: [
{ type: 'html', subdir: 'html' },
{ type: 'lcovonly', subdir: '.' }
]
},
files: ['./tests.webpack.js'],
frameworks: ['jasmine'],
preprocessors: { './tests.webpack.js': ['webpack'] },
reporters: ['progress', 'coverage'],
webpack: configureWebpack()
});
function configureWebpack(webpackConfigFunction) {
var webpackConfig = require('./webpack.config');
webpackConfig.entry = undefined; // karma will pass the proper argument for entry
return webpackConfig;
}
};
正如你所看到的,我没有使用karma-babel插件:我不确定为什么我需要那些,看到我已经有一个带有import/require语句的代码的工作版本.
test_entry.js:
var testsContext = require.context('./test', true, /\.js$/);
testsContext.keys().forEach(testsContext);
var srcContext = require.context('./app', true, /\.js$/);
srcContext.keys().forEach(srcContext);
webpack构建顺利成功(并发出预期文件大小的test_entry.js块),但随后Karma打开Chrome,一旦页面加载,我就会遇到以下错误:
Chrome 51.0.2704(Windows 7 0.0.0)错误
未捕获的SyntaxError:意外的令牌导入
在the_path/test_entry.js:41
test_entry.js没有41行,并且不包含import语句,无论如何它们应该被处理掉了.出了什么问题？
如果你想知道webpack配置:
// webpack.config.js, works perfectly for normal builds but not with Karma
var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
debug: true,
entry: {
app: ['./app/index.js'],
vendor: ['./app/vendor.js']
},
output: {
path: path.join(__dirname, 'dist'),
filename: 'js/[name].js'
},
plugins: [
new HtmlWebpackPlugin({
template: './app/index.html',
inject: 'body',
minify: false
}),
new webpack.optimize.CommonsChunkPlugin('vendor', 'js/vendor.js'),
new webpack.SourceMapDevToolPlugin({
filename: '[file].map',
exclude: /vendor/
})
],
resolve: {
extensions: ['', '.js'],
alias: {
app: path.join(__dirname, 'app')
}
},
module: {
loaders: [
{
test: /\.js$/,
loader: 'babel-loader',
include: path.join(__dirname, 'app'),
exclude: path.join(__dirname, 'node_modules')
},
{
test: /\.html$/,
loader: 'html-loader'
}
]
},
resolveLoader: {
root: path.join(__dirname, 'node_modules')
},
};如果您想查看test_entry.js所需的测试,我无法运行该测试:
import jasmine from 'jasmine-core';
import readableNumberFilter from './file_path/readableNumber.filter';
// for some reason needed, or else unexpected token errors during build:
var describe = jasmine.describe;
var it = jasmine.it;
var expect = jasmine.expect;
describe('readableNumber Filter', function () {
describe('readableNumber Filter formatting', () => {
it('it should support optional arguments', function () {
expect(readableNumberFilter("50.3")).toEqual("50,30");
});
});
});编辑20-7-2016
问题仍然存在,更新的babel-loader依赖项(包括设置es2015预设选项)."babel-core":"^ 6.11.4","babel-loader":"^ 6.2.4","babel-preset-es2015":"^ 6.9.0",
Bog*_*luk 33
问题是你没有转发测试源 - 文件src/global/filters/dateFormat.filter.spec.js没有被转换.
您需要更改此加载程序配置:
{
test: /\.js$/,
loader: 'babel-loader',
include: path.join(__dirname, 'app'),
exclude: path.join(__dirname, 'node_modules')
},
如下,使它工作:
{
test: /\.js$/,
loader: 'babel-loader',
include: [
path.join(__dirname, 'app'),
path.join(__dirname, 'test')
],
exclude: path.join(__dirname, 'node_modules')
},
webpack.optimize.CommonsChunkPlugin插件也存在问题 - 应该禁用karma:https:
//github.com/webpack/karma-webpack/issues/22
比禁用此插件后,您的测试文件中存在错误:
import jasmine from 'jasmine-core';
import readableNumberFilter from 'readableNumber.filter';
var describe = jasmine.describe;
var it = jasmine.it;
var expect = jasmine.expect;
describe('readableNumber Filter', function () {
describe('readableNumber Filter formatting', () => {
it('it should support optional arguments', function () {
expect(readableNumberFilter("50.3")).toEqual("50,30");
});
});
});
此测试中的错误很少:
import jasmine from 'jasmine-core';- 你不应该这样做(业力会做,也会增加describe,it并且expect)import readableNumberFilter from 'readableNumber.filter'; - 这不是你如何实例化角度服务来测试它们的方式.你应该这样做(这个测试实际上适用于上面提到的所有修复):
import angular from 'angular';
import 'angular-mocks';
import testModule from '../../../../app/src/global/index';
const { module, inject } = angular.mock;
describe('readableNumber Filter', () => {
beforeEach(module(testModule));
let $filter;
beforeEach(inject((_$filter_) => {
$filter = _$filter_;
}));
describe('readableNumber Filter formatting', () => {
it('it should support optional arguments', () => {
const result = $filter('readableNumber')("50.3");
expect(result).toEqual("50,30");
});
});
});
注意:您需要安装模块angular-mocks;
要支持代码覆盖率报告,您需要配置测试webpack配置以使用类似的功能babel-istanbul-loader.顺便说一句,您还需要升级到Babel6.
此外,您还需要使webpack配置更具可配置性(测试和生产的配置需要略有不同).
我已向您发送了一个包含所有这些修复程序的pull-request:https://github.com/bbottema/webpack-angular15-es6-karma/pull/1
关于使用webpack构建angular 1.x项目,包括通过karma进行代码覆盖测试 - 也许你会对我的项目感兴趣:https://github.com/zxbodya/angular-webpack-seed - 它是所有必需的入门模板配置.