docker-nightwatch-xvfb

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Some dockerfiles for running tests with nightwatch.js.

• Uses the base 'java' image (OpenJDK 8)
• Assumes you will be starting your own Selenium server

These are available on Docker Hub as:

• tildedave/nightwatch-xvfb-firefox
• tildedave/nightwatch-xvfb-chrome

Tips

To run nightwatch inside of Xvfb, you can use xvfb-run. For example,

xvfb-run --server-args="-screen 0 1600x1200x24" nightwatch -e chrome -a login

Getting Chrome Working

Selenium ships with Firefox behavior built-in. To automate against Chrome, you must use Selenium through Chromedriver.

To run Chrome, you must either have chromedriver in your PATH environment variable, or specified as your chrome.cli.opts in your Nightwatch configuration. Here's a configuration that's worked for me:

  "selenium" : {
    "start_process" : true,
    "server_path" : "node_modules/selenium-server/lib/runner/selenium-server-standalone-2.44.0.jar",
    "log_path" : "",
    "host" : "127.0.0.1",
    "port" : 4444,
    "cli_args" : {
      "webdriver.chrome.driver" : "node_modules/chromedriver/lib/chromedriver/chromedriver"
    }
  }

As documented elsewhere, you must also start Chrome with --no-sandbox.

"chrome" : {
  "desiredCapabilities": {
    "browserName": "chrome",
    "javascriptEnabled": true,
    "acceptSslCerts": true,
    "chromeOptions": {
      "args": [ "--no-sandbox" ]
    }
  }
}