karma.conf.js

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

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: ['jasmine'],


    // list of files / patterns to load in the browser
    files: [
      'src/**/*.js*',
      'test/**/*.js*'
    ],


    // list of files to exclude
    exclude: [
      'src/index.jsx'
    ],

    proxies: {
      '/refresh.cgi': {
        'target': 'http://island.krgamestudios.com/refresh.cgi',
        changeOrigin: true
      },
      '/entry.cgi': {
        'target': 'http://island.krgamestudios.com/entry.cgi',
        changeOrigin: true
      }
    },


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      'src/**/*.js*': ['webpack', 'coverage'],
      'scripts/**/*.js*': ['webpack', 'coverage'],
      'test/**/*.js*': ['webpack', 'coverage']
    },

    webpack: webpackConfig,


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress', 'coverage'],


    // 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: false,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Firefox'],


    // 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
  })
}

        'target': 'http://island.krgamestudios.com/refresh.cgi',
        changeOrigin: true
      },
      '/entry.cgi': {
        'target': 'http://island.krgamestudios.com/entry.cgi',
        changeOrigin: true
      }
    },


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      'src/**/*.js*': ['webpack', 'coverage'],
      'scripts/**/*.js*': ['webpack', 'coverage'],
      'test/**/*.js*': ['webpack', 'coverage']
    },

    webpack: webpackConfig,


    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress', 'coverage'],


    // 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: false,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['PhantomJS'],


    // 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
  })
}

package.json

{
  "name": "public_html",
  "version": "1.0.0",
  "description": "",
  "main": "",
  "scripts": {
    "start": "webpack",
    "test": "./node_modules/.bin/karma start karma.conf.js"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "jasmine-core": "^2.5.2",
    "karma": "^1.5.0",
    "webpack": "^2.2.1"
  },
  "devDependencies": {
    "babel-cli": "^6.23.0",
    "babel-loader": "^6.3.2",
    "babel-plugin-istanbul": "^4.0.0",
    "babel-preset-env": "^1.2.0",
    "babel-preset-es2015": "^6.22.0",
    "babel-preset-react": "^6.23.0",
    "babel-preset-stage-0": "^6.22.0",
    "karma-coverage": "^1.1.1",
    "karma-firefox-launcher": "^1.0.1",
    "karma-jasmine": "^1.1.0",
    "karma-phantomjs-launcher": "^1.0.2",
    "karma-webpack": "^2.0.2",
    "react": "^15.4.2",
    "react-dom": "^15.4.2",
    "react-redux": "^5.0.2",
    "redux": "^3.6.0",
    "redux-devtools": "^3.3.2",
    "redux-devtools-dock-monitor": "^1.1.1",
    "redux-devtools-log-monitor": "^1.2.0",
    "redux-thunk": "^2.1.0",
    "semantic-ui-css": "^2.2.4",
    "semantic-ui-react": "^0.64.0"
  }
}

webpack.config.js

module.exports = {
  entry: "./src/index.jsx",
  output: {
    path: "./",
    filename: "output.bundle.js"
  },
  module: {
    loaders: [
      {
        test: /\.jsx$/,
        loader: 'babel-loader',
        exclude: /node_modules/,
        query: {
          presets: ['react', 'es2015', 'stage-0'],
          plugins: ['istanbul']
        }
      }
    ]
  }
};