Karmaを使ってSauceLabsの同時接続上限にかからないようにテストを実行する。

karma.conf.js

module.exports = function(config) {
  var customLaunchers = require('./saucebrowsers.js');
  config.set({
    basePath: '',
    frameworks: ['mocha', 'browserify'],
    files: [./**/*.js],
    exclude: [],
    preprocessors: {},
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: true,
    sauceLabs: {
      username: '***',
      accessKey: '***'
    },
    customLaunchers: customLaunchers,
    browsers: [process.env.sauce_browser_name],
    reporters: ['dots', 'saucelabs'],
    singleRun: true
  });
};

saucebrowsers.js

var version = require('./package.json').version;
var build = 'build:' + version;
var chrome_version = '39';
var firefox_version = '35';

module.exports = {
  //Chrome
  chrome_win7: {
    testName: 'chrome_win7',
    base: 'SauceLabs',
    browserName: 'chrome',
    platform: 'Windows 7',
    version: chrome_version,
    build: build,
    passed: true,
    public: 'public'

  },
  chrome_mac: {
    testName: 'chrome_mac',
    base: 'SauceLabs',
    browserName: 'chrome',
    platform: 'OS X 10.10',
    version: chrome_version,
    build: build,
    passed: true,
    public: 'public'

  },

  //Firefox
  firefox_win7: {
    testName: 'firefox_win7',
    base: 'SauceLabs',
    browserName: 'firefox',
    platform: 'Windows 7',
    version: firefox_version,
    build: build,
    passed: true,
    public: 'public'
  },
  firefox_mac: {
    testName: 'firefox_mac',
    base: 'SauceLabs',
    browserName: 'firefox',
    platform: 'OS X 10.10',
    version: firefox_version,
    build: build,
    passed: true,
    public: 'public'
  },

  //safari mac
  safari_mac: {
    testName: 'safari_mac',
    base: 'SauceLabs',
    name: 'OS X 10.10 safari',
    browserName: 'safari',
    platform: 'OS X 10.10',
    build: build,
    passed: true,
    public: 'public'
  },

  //IE
  ie_9_win7: {
    testName: 'ie_9_win7',
    base: 'SauceLabs',
    browserName: 'internet explorer',
    platform: 'Windows 7',
    version: '9',
    build: build,
    passed: true,
    public: 'public'
  },
  ie_10_win7: {
    testName: 'ie_10_win7',
    base: 'SauceLabs',
    browserName: 'internet explorer',
    platform: 'Windows 7',
    version: '10',
    build: build,
    passed: true,
    public: 'public'
  },
  ie_11_win81: {
    testName: 'ie_11_win81',
    base: 'SauceLabs',
    browserName: 'internet explorer',
    platform: 'Windows 8.1',
    version: '11',
    build: build,
    passed: true,
    public: 'public'
  },

  //iphone
  iphone: {
    testName: 'iphone-8.1',
    base: 'SauceLabs',
    browserName: 'iphone',
    platform: 'OS X 10.10',
    version: '8.1',
    build: build,
    passed: true,
    public: 'public'
  },
};

saucerunner.js

var spawn = require('child_process').spawn;
var browsers = Object.keys(require('./saucebrowsers.js'));

var karmaStart = function(idx) {
  if (idx >= browsers.length) return;

  process.env.sauce_browser_name = browsers[idx];

  var runner = spawn('./node_modules/karma/bin/karma', ['start']);

  console.log('Start: ' + process.env.sauce_browser_name);
  runner.stdout.on('data', function(data) {
    console.log(data.toString());
  });

  runner.stderr.on('data', function(data) {
    console.log('stderr: ' + data);
  });

  runner.on('close', function(code) {
    console.log('Close: ' + process.env.sauce_browser_name);
    karmaStart(++idx);
  });
};

karmaStart(0);