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seleniumpolymerubuntu-16.04htmlunit-driverwct

Polymer Webcomponent Tester (WCT) XVFB unable to connect to selenium

I am getting this error on ubuntu when we use XVFB to load WCT test. The test goes through fine the first time however, when we run the second time it fails. Looks like its missing HTMLunit Driver. I tried installing unit driver but could not fix.

xvfb-run wct --skip-selenium-install enter image description here

Solution

  • I did following 3 things to make this working. They may not be the perfect solution because it is a little bit hacky.

    1. Download https://selenium-release.storage.googleapis.com/2.52/selenium-server-standalone-2.52.0.jar and copy it to /usr/local/lib/node_modules/web-component-tester/node_modules/selenium-standalone/.selenium/selenium-server/2.52.0-server.jar (you may need to change path to fit your server).

    2. Modify /usr/local/lib/node_modules/web-component-tester/node_modules/selenium-standalone/lib/default-config.js to change selenium standalone server version from 2.53.1 to 2.52.0 (this will solve HtmlUnitDriver not registered problem)

    3. Modify /usr/local/lib/node_modules/web-component-tester/node_modules/selenium-standalone/lib/check-started.js to change "var maxRetries = 60 * 1000 / retryInterval;" to be "var maxRetries = 600 * 1000 / retryInterval;" (this will solve timeout problem)

    After making above hack, you can run wct or xvfb-run wct. Just need to wait a little bit longer, you will see your test results.