Auto-generating the intern test config

intern.config.js

/**
 * Functional and Unit test configuration
 *
 * This configuration file has to work in both Node.js and browser environments.
 * Therefore, this config is a template that is used to build the Intern config
 * used to run the tests. The packages and suites are automatically defined.
 *
 * Learn more about configuring Intern at:
 * https://github.com/theintern/intern/wiki/Configuring-Intern
 */

module.exports = {
  buildDir: 'build/test',

  capabilities: {
    'selenium-version': '2.42.2',
    'idle-timeout': 30
  },

  environments: [
    { browserName: 'chrome' },
    { browserName: 'firefox' }
  ],

  excludeInstrumentation: '__EXCLUDES__',

  maxConcurrency: 3,

  proxyPort: 9000,

  proxyUrl: 'http://localhost:9000/',

  useSauceConnect: false,

  webdriver: {
    host: 'localhost',
    port: 4444
  },

  loader: {
    baseUrl: '__BASE_URL__',
    packages: '__PACKAGES__',
    map: {
      intern: {
        dojo: 'intern/node_modules/dojo',
        chai: 'intern/node_modules/chai/chai'
      },
      '*': {
        'intern/dojo': 'intern/node_modules/dojo'
      }
    }
  },

  suites: '__SUITES__',

  functionalSuites: '__FUNC_SUITES__',
};

make-intern-config.js

/**
 * Build the config for the unit and functional tests from the intern.config.js
 * template.
 */

var fs = require('fs');
var glob = require('glob');
var path = require('path');

// config template
var INTERN_CONFIG = require('./intern.config');

// dirs
var BUILD_TEST_DIR = INTERN_CONFIG.buildDir;
var ROOT = './app';

// replacement config values
var BASE_URL = '(typeof window !== "undefined" ? ' + '"../.." : "./") + "' + BUILD_TEST_DIR + '"';
var EXCLUDES = '/(intern.js)|(?:node_modules|test)\\//';

// extract the packages and suites (in the format expected by Intern) from the
// web_modules
var modules = {
  entries: [],
  units: [],
  webdrivers: []
};

glob.sync(ROOT + '/**/*.js').forEach(function (filepath) {
  var moduleName = path.dirname(path.relative(ROOT, filepath));
  var modulePath = path.relative(ROOT, filepath);

  if (filepath.indexOf('unit.spec') > -1) {
    modules.units.push(modulePath);
  } else if (filepath.indexOf('webdriver.spec') > -1) {
    modules.webdrivers.push(modulePath);
  } else {
    modules.entries.push({
      name: moduleName,
      location: moduleName,
      main: 'index.js'
    });
  }
});

// build config
var raw = JSON.stringify(INTERN_CONFIG);
raw = raw.replace('"__BASE_URL__"', BASE_URL);
raw = raw.replace('"__EXCLUDES__"', EXCLUDES);
raw = raw.replace('"__PACKAGES__"', JSON.stringify(modules.entries));
raw = raw.replace('"__SUITES__"', JSON.stringify(modules.units));
raw = raw.replace('"__FUNC_SUITES__"', JSON.stringify(modules.webdrivers));
raw = 'define(' + raw + ')';

fs.writeFileSync(path.join(BUILD_TEST_DIR, 'intern.js'), raw);