karma.conf.js

var path = require('path');

var browsers = ['Chrome'];
// trvis env

if (process.env.TRAVIS) {
  browsers = ['Chrome_travis_ci'];
}


module.exports = function(config) {
  config.set({
    basePath: '',
    frameworks: ['jasmine'],
    files: [
      './tests/**/*.js'
    ],

    preprocessors: {
      // add webpack as preprocessor
      'src/**/*.js': ['webpack', 'sourcemap'],
      'tests/**/*.test.js': ['webpack', 'sourcemap']
    },
    // webpack file
    webpack: { 
      devtool: 'inline-source-map', //just do inline source maps instead of the default
      module: {
        loaders: [
          {
            test: /\.js$/,
            loader: 'babel',
            exclude: path.resolve(__dirname, 'node_modules'),
            query: {
              presets: ['airbnb']
            }
          },
          {
            test: /\.json$/,
            loader: 'json',
          },
        ]
      },
      externals: {
        'react/addons': true,
        'react/lib/ExecutionEnvironment': true,
        'react/lib/ReactContext': true
      }
    },

    webpackServer: {
      noInfo: true //please don't spam the console when running in karma!
    },

    plugins: [
      'karma-webpack',
      'karma-jasmine',
      'karma-sourcemap-loader',
      'karma-chrome-launcher',
    ],
    
    babelPreprocessor: {
      options: {
        presets: ['airbnb']
      }
    },
    reporters: ['progress'],
    // custom launchers 
    customLaunchers: {
        Chrome_travis_ci: {
            base: 'Chrome',
            flags: ['--no-sandbox']
        }
    },
    // port: 9002,
    logLevel: config.LOG_INFO,
    browsers: browsers,
    singleRun: false
  })
  
};