karma.conf.js

var webpackConfig = require('./webpack.config.js');

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['mocha', 'chai', 'sinon'],
    files: [
      'test/**/*.spec.js',
    ],
    exclude: [],
    preprocessors: {
      'app/**/*.js': ['webpack', 'sourcemap'],
      'test/**/*.js': ['webpack', 'sourcemap'],
    },
    webpack: {
      devtool: 'source-map',
      module: webpackConfig.module,
      externals: {
        'cheerio': 'window',
        'jsdom': 'window',
        'react/addons': true,
        'react/lib/ExecutionEnvironment': true,
        'react/lib/ReactContext': true,
      },
      resolve: webpackConfig.resolve,
    },
    webpackServer: {
      stats: 'errors-only',
    },
    reporters: ['mocha'],
    mochaReporter: {
      showDiff: true,
    },
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    browsers: ['Chrome'],
    singleRun: false,
    concurrency: Infinity,
  });
};