karma.conf.js

module.exports = function (config) {
  config.set({
    basePath: '',
    frameworks: ['mocha', 'chai'],
    files: [{ pattern: 'spec.bundle.js', watched: false }],
    exclude: [],
    plugins: [
      require("karma-chai"),
      require("karma-chrome-launcher"),
      require("karma-mocha"),
      require("karma-mocha-reporter"),
      require("karma-sourcemap-loader"),
      require("karma-webpack")
    ],
    preprocessors: { 'spec.bundle.js': ['webpack', 'sourcemap'] },
    webpack: {
      devtool: 'inline-source-map',
      module: {
        loaders: [
          { test: /\.js/, exclude: [/app\/lib/, /node_modules/], loader: 'babel' },
          { test: /\.html/, loader: 'raw' },
          { test: /\.styl$/, loader: 'style!css!stylus' },
          { test: /\.css$/, loader: 'style!css' }
        ]
      }
    },
    webpackServer: {
      noInfo: true
    },
    reporters: ['mocha'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: false,
    browsers: ['Chrome'],
    singleRun: true
  });
};