nightwatch.conf.js

const BINPATH = './node_modules/nightwatch/bin/';

const SAUCE_USERNAME = process.env.SAUCE_USERNAME;
const SAUCE_ACCESS_KEY = process.env.SAUCE_ACCESS_KEY;
const TRAVIS_BUILD_NUMBER = process.env.TRAVIS_BUILD_NUMBER;

const config = {  // we use a nightwatch.conf.js file so we can include comments and helper functions
  "src_folders": [
    "test/e2e"  // we use '/test' as the name of our test directory by default. So 'test/e2e' for 'e2e'.
  ],
  "output_folder": "./reports",  // reports (test outcome) output by Nightwatch
  "custom_commands_path" : "custom_commands",
  "selenium": {
    "start_process": true,
    "server_path": BINPATH + "selenium.jar",  // downloaded by selenium-download module (see below)
    "log_path": "",
    "host": "127.0.0.1",
    "port": 4444,
    "cli_args": {
      "webdriver.chrome.driver" : BINPATH + "chromedriver"  // also downloaded by selenium-download
    }
  },
  "test_workers" : {"enabled" : true, "workers" : "auto"},  // perform tests in parallel where possible
  "test_settings": {
    "default": {
      "launch_url": "http://localhost",  // we're testing a Public or "staging" site on Saucelabs
      "selenium_port": 80,
      "selenium_host": "ondemand.saucelabs.com",
      "silent": true,
      "screenshots": {
        "enabled": false,  // save screenshots to this directory (excluded by .gitignore)
        "path": ""
      },
      "username" : "${SAUCE_USERNAME}",
      "access_key" : "${SAUCE_ACCESS_KEY}",
      "desiredCapabilities": {
        "name": "test-from-travis-${TRAVIS_BUILD_NUMBER}",
        "build": "build-${TRAVIS_BUILD_NUMBER}",
        "browserName": "chrome",
        "javascriptEnabled": true,
        "webStorageEnabled": true,
        "acceptSslCerts": true,
        "chromeOptions": {
          "args": [
            `Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46
            (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3`,
            "--window-size=640,1136"  // iphone 5
          ]
        }
      },
      "globals": {
        "waitForConditionTimeout": 10000  // wait for content on the page before continuing
      }
    },
    "local": {
      "launch_url": "http://127.0.0.1:3000",
      "selenium_port": 4444,
      "selenium_host": "127.0.0.1",
      "silent": true,
      "screenshots": {
        "enabled": false,
        "path": ""
      },
      "globals": {
        "waitForConditionTimeout": 15000  // on localhost sometimes internet is slow so wait...
      },
      "desiredCapabilities": {
        "browserName": "chrome",
        "chromeOptions": {
          "args": [
            `Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46
            (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3`,
            "--window-size=640,1136"  // iphone 5
          ]
        },
        "javascriptEnabled": true,
        "acceptSslCerts": true
      }
    },
    "chrome": {  // your local Chrome browser (chromedriver)
      "desiredCapabilities": {
        "browserName": "chrome",
        "javascriptEnabled": true,
        "acceptSslCerts": true
      }
    },
    "chromemac": {  // browsers used on saucelabs:
      "desiredCapabilities": {
        "browserName": "chrome",
        "platform": "OS X 10.11",
        "version": "47"
      }
    },
    "ie11": {
      "desiredCapabilities": {
        "browserName": "internet explorer",
        "platform": "Windows 10",
        "version": "11.0"
      }
    },
    "firefox" : {
      "desiredCapabilities": {
        "platform": "XP",
        "browserName": "firefox",
        "version": "33"
      }
    },
    "internet_explorer_10" : {
      "desiredCapabilities": {
        "platform": "Windows 7",
        "browserName": "internet explorer",
        "version": "10"
      }
    },
    "android_s4_emulator": {
      "desiredCapabilities": {
        "browserName": "android",
        "deviceOrientation": "portrait",
        "deviceName": "Samsung Galaxy S4 Emulator",
        "version": "4.4"
      }
    },
    "iphone_6_simulator": {
      "desiredCapabilities": {
        "browserName": "iPhone",
        "deviceOrientation": "portrait",
        "deviceName": "iPhone 6",
        "platform": "OSX 10.10",
        "version": "8.4"
      }
    }
  }
}
module.exports = config;

/**
 * selenium-download does exactly what it's name suggests;
 * downloads (or updates) the version of Selenium (& chromedriver)
 * on your localhost where it will be used by Nightwatch.
 */
require('fs').stat(BINPATH + 'selenium.jar', function (err, stat) { // got it?
  if (err || !stat || stat.size < 1) {
    require('selenium-download').ensure(BINPATH, function(error) {
      if (error) throw new Error(error); // no point continuing so exit!
      console.log('✔ Selenium & Chromedriver downloaded to:', BINPATH);
    });
  }
});