old_contents: var webpack = require('webpack');
  var webpackConfig = require('./webpack.config');
  webpackConfig.devtool = 'inline-source-map';
  module.exports = function (config) {
    config.set({
  
      browsers: [process.env.CONTINUOUS_INTEGRATION
          ? 'Firefox'
          : 'Chrome'],
  
      singleRun: false,
  
      frameworks: [
        'mocha', 'should-sinon', 'should', 'sinon'
      ],
  
      files: ['tests.webpack.js'],
  
      preprocessors: {
        'tests.webpack.js': ['webpack', 'sourcemap']
      },
  
      reporters: ['dots'],
  
      webpack: webpackConfig,
  
      webpackServer: {
        noInfo: true
      }
  
    });
  };
  
new_contents: var webpack = require('webpack');
  var webpackConfig = require('./webpack.config');
  webpackConfig.devtool = 'inline-source-map';
  module.exports = function (config) {
    config.set({
  
      browsers: [process.env.CONTINUOUS_INTEGRATION
          ? 'Firefox'
          : 'Chrome'],
  
      singleRun: false,
  
      frameworks: [
        'mocha', 'chai'
      ],
  
      files: ['tests.webpack.js'],
  
      preprocessors: {
        'tests.webpack.js': ['webpack', 'sourcemap']
      },
  
      reporters: ['dots'],
  
      webpack: webpackConfig,
  
      webpackServer: {
        noInfo: true
      }
  
    });
  };
  
subject: update karma conf