gistfile1.coffee

grunt.initConfig
  testem:
    'core-jquery':
      src: [
        'bower_components/jquery/jquery.js',
        'core/*.coffee'
      ],
      options:
        launch_in_dev: ['PhantomJS'],
        launch_in_ci: ['PhantomJS', 'Chrome', 'Firefox', 'Safari', 'IE7', 'IE8', 'IE9']
    'core-zepto':
      src: [
        'bower_components/zepto/zepto.js',
        'core/*.coffee'
      ],
      options:
        launch_in_dev: ['PhantomJS'],
        launch_in_ci: ['PhantomJS', 'Chrome', 'Firefox', 'Safari', 'IE7', 'IE8', 'IE9']
    'environments-amd':
      src: [
        'bower_components/jquery/jquery.js',
        'bower_components/requirejs/require.js',
        'core/*.coffee'
      ],
      options:
        launch_in_dev: ['PhantomJS'],
        launch_in_ci: ['PhantomJS', 'Chrome', 'Firefox', 'Safari', 'IE7', 'IE8', 'IE9']
    'generators':
      options:
        launchers:
          'Mocha': 'mocha ...'
        launch_in_dev: ['Mocha']
        launch_in_ci: ['Mocha']