configuration example for setup test environment using karma, requirejs, mocha, chai, and sinon

karma.conf.js

// Karma configuration

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: ['mocha', 'requirejs', 'chai-sinon'],


    // list of files / patterns to load in the browser
    files: [
      'test-main.js',
      //example
      {pattern: 'app/js/lib/**/*.js', included: false},
      {pattern: 'app/js/test/**/*.js', included: false},
      {pattern: 'app/templates/**/*.html', included: false}
      //{pattern: 'location file(s)', included: false}
    ],
    //put all of your pattern in above, but don't delete the test-main.js(for requirejs)

    // list of files to exclude
    exclude: [
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
    },


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


    // 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: ['Chrome'],


    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: false
  });
};

test-main.js

var allTestFiles = [];
var TEST_REGEXP = /(spec|test)\.js$/i;

var pathToModule = function(path) {
  return path.replace(/^\/base\/app\//, '').replace(/\.js$/, '');
};

Object.keys(window.__karma__.files).forEach(function(file) {
  if (TEST_REGEXP.test(file)) {
    // Normalize paths to RequireJS module names.
    allTestFiles.push(pathToModule(file));
  }
});

require.config({
  // Karma serves files under /base, which is the basePath from your config file
  baseUrl: '/base/app/',
  paths: {
    'jquery': 'js/lib/jquery/jquery',
    'underscore': 'js/lib/underscore/underscore',
    'backbone': 'js/lib/backbone/backbone',
    'text': 'js/lib/text/text'
  },

  // dynamically load all test files
  deps: allTestFiles,

  // we have to kickoff jasmine, as it is asynchronous
  callback: window.__karma__.start
});