问题

While running ng e2e I get the following

✓ should display message saying sign up
✗ should be able to sign up with a valid user
  - Failed: unknown error: an X display is required for keycode conversions, consider using Xvfb
    (Session info: headless chrome=59.0.3071.71)
    (Driver info: chromedriver=2.29.461571 (8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5),platform=Linux 3.13.0-48-generic x86_64)
    (Session info: headless chrome=59.0.3071.71)
    (Driver info: chromedriver=2.29.461571 (8a88bbe0775e2a23afda0ceaf2ef7ee74e822cc5),platform=Linux 3.13.0-48-generic x86_64)

Configuration:

const { SpecReporter } = require('jasmine-spec-reporter');

exports.config = {
  allScriptsTimeout: 11000,
  specs: [
    './e2e/**/*.e2e-spec.ts'
  ],
  capabilities: {
    'browserName': 'chrome',
    'chromeOptions': {
      'args': ['show-fps-counter=true', '--no-sandbox', '--headless', '--disable-gpu']
    }
  },
  directConnect: true,
  baseUrl: 'http://localhost:4200/',
  framework: 'jasmine',
  jasmineNodeOpts: {
    showColors: true,
    defaultTimeoutInterval: 30000,
    print: function() {}
  },
  beforeLaunch: function() {
    require('ts-node').register({
      project: 'e2e/tsconfig.e2e.json'
    });
  },
  onPrepare() {
    jasmine.getEnv().addReporter(new SpecReporter({ spec: { displayStacktrace: true } }));
  }
};

From the following link, it seems we do not need Xvfb, so what would be the right configuration?

For now followed configuration from here: Using Headless Chrome.

回答1:

Workaround to install chromedriver 2.31

As mentioned in this bug report, davidthornton has compiled a binary of chromedriver-2.31, which includes the fix: https://github.com/davidthornton/chromedriver-2.31

I've successfully used this by adding this oneliner to my ci install script:

mkdir -p ~/chromedriver && wget https://github.com/davidthornton/chromedriver-2.31/blob/master/chromedriver\?raw\=true -O ~/chromedriver/chromedriver && chmod a+x ~/chromedriver/chromedriver && export PATH="$HOME/chromedriver:$PATH"

Is 2.31 released, yet?

Let's hope they'll release chromedriver 2.31 soon!

Check the releases here: https://sites.google.com/a/chromium.org/chromedriver/downloads

回答2:

Above issue was due to sendkeys. As of now there is no solution with just headless browser and sendkeys, refer to Issue.

It works with xvfb for now.

Provision xvfb

sudo apt-get install -y xvfb
sudo apt-get install -y xfonts-100dpi xfonts-75dpi xfonts-cyrillic dbus-x11
xvfb-run -a -s "-screen 0 2920x2580x24" ng e2e

来源：https://stackoverflow.com/questions/44194088/protractor-throws-error-an-x-display-is-required-for-headless-chrome-59

标签

google-chrome

protractor

selenium-chromedriver

headless-browser

Protractor throws error an X Display is required for headless chrome 59