testem.js

#!/usr/bin/env node
'use strict';

const program = require('commander');
let progOptions = program;
const Config = require('./lib/config');
const Api = require('./lib/api');
let appMode = 'dev';

program
  .version(require(__dirname + '/package').version)
  .usage('[options]')
  .option('-f, --file [file]', 'config file - defaults to testem.json or testem.yml')
  .option('-p, --port [num]', 'server port - defaults to 7357', Number)
  .option('--host [hostname]', 'host name - defaults to localhost', String)
  .option('-l, --launch [list]', 'list of launchers to launch(comma separated)')
  .option('-s, --skip [list]', 'list of launchers to skip(comma separated)')
  .option('-d, --debug [file]', 'output debug to debug log - defaults to testem.log')
  .option('-t, --test_page [page]', 'the html page to drive the tests')
  .option('-g, --growl', 'turn on growl / native notifications');

program
  .command('launchers')
  .description('Print the list of available launchers (browsers & process launchers)')
  .action(act(env => {
    env.__proto__ = program;
    progOptions = env;
    appMode = 'launchers';
  }));

program
  .command('ci')
  .description('Continuous integration mode')
  .option('-T, --timeout [sec]', 'timeout a browser after [sec] seconds', null)
  .option('-P, --parallel [num]', 'number of browsers to run in parallel, defaults to 1', Number)
  .option('-b, --bail_on_uncaught_error', 'Bail on any uncaught errors')
  .option('-R, --reporter [reporter]', 'Test reporter to use [tap|dot|xunit|teamcity]')
  .action(act(env => {
    env.__proto__ = program;
    progOptions = env;
    appMode = 'ci';
  }));

program
  .command('server')
  .description('Run just the server')
  .action(act(env => {
    env.__proto__ = program;
    progOptions = env;
    appMode = 'server';
  }));

program.on('--help', () => {
  console.log('  Keyboard Controls (in dev mode):\n');
  console.log('    ENTER                  run the tests');
  console.log('    q                      quit');
  console.log('    LEFT ARROW             move to the next browser tab on the left');
  console.log('    RIGHT ARROW            move to the next browser tab on the right');
  console.log('    TAB                    switch between top and bottom panel (split mode only)');
  console.log('    UP ARROW               scroll up in the target text panel');
  console.log('    DOWN ARROW             scroll down in the target text panel');
  console.log('    SPACE                  page down in the target text panel');
  console.log('    b                      page up in the target text panel');
  console.log('    d                      half a page down in the target text panel');
  console.log('    u                      half a page up in the target text panel');
  console.log();
});

main();
function main() {
  program.parse(process.argv);

  let config = new Config(appMode, progOptions);
  if (appMode === 'launchers') {
    config.read(() => config.printLauncherInfo());
  } else {
    let api = new Api();
    if (appMode === 'ci') {
      api.startCI(progOptions);
    } else if (appMode === 'dev') {
      api.startDev(progOptions);
    } else if (appMode === 'server') {
      api.startServer(progOptions);
    }
  }
}

// this is to workaround the weird behavior in command where
// if you provide additional command line arguments that aren't
// options, it goes in as a string as the 1st arguments of the
// "action" callback, we don't want this
function act(fun) {
  return function() {
    let options = arguments[arguments.length - 1];
    fun(options);
  };
}