karma.conf.js

var path = require('path')
var webpack = require('webpack')
var coverage = String(process.env.COVERAGE) !== 'false'

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: ['mocha', 'chai'],


        // list of files / patterns to load in the browser
        files: ['./*.spec.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

        // test results reporter to use
        // possible values: 'dots', 'progress'
        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
        reporters: ['spec', 'coverage', 'mocha'],
        preprocessors: {
            './*.spec.js': ['webpack']
        },
        mochaReporter: { showDiff: true },
        browserLogOptions: {
            terminal: true
        },
        browserConsoleLogOptions: {
            terminal: true
        },
        coverageReporter: {
            type: 'html',
            dir: 'coverage/'
        },
        webpack: {

            module: {
                /* Transpile source and test files */
                preLoaders: [{
                    test: /\.jsx?$/,
                    exclude: path.resolve(__dirname, 'node_modules'),
                    loader: 'babel-loader',
                    query: {
                        presets: ['env', 'react'],
                        plugins: ['istanbul', 'syntax-async-generators', ["transform-runtime", {
                            "helpers": true,
                            "polyfill": true,
                            "regenerator": true,
                            "moduleName": "babel-runtime"
                        }]],
                        babelrc: false
                    }
                }],
                /* Only Instrument our source files for coverage */
                loaders: []
            },
            resolve: {

                alias: {},
                modulesDirectories: [__dirname, 'node_modules']
            },
            plugins: [
                new webpack.DefinePlugin({ //添加全局变量
                    coverage: coverage,
                    NODE_ENV: JSON.stringify(process.env.NODE_ENV || ''),
                })
            ]
        },
        webpackMiddleware: {
            noInfo: true //去掉编译文件的LOG
        },
        //hostname: '127.0.0.1',
        // 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: ['Chrome', 'Firefox', 'PhantomJS'],
        customLaunchers: {
            'Chrome': {
                base: 'WebDriverio',
                browserName: 'chrome',
                name: 'Karma'
            }
        },
        browsers: ['Chrome'],

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

        // Concurrency level
        // how many browser should be started simultaneous
        concurrency: Infinity
    })
}