This issue was recently documented on the QA list. [1]

Issue: selenium-webdriver < 2.42 doesn't work with Firefox 32.
Solution: Update your gems by running bundle update in your tests/browser directory and verify that you're using selenium-webdriver >= 2.43 by running bundle show selenium-webdriver.

[1] https://lists.wikimedia.org/pipermail/qa/2014-September/001890.html

physik wrote:

Thanks for the tip.
However, that did not change anything.
tests/browser$ bundle show selenium-webdriver
/var/lib/gems/2.0.0/gems/selenium-webdriver-2.43.0
tests/browser$ firefox --version
(process:21861): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed
Mozilla Firefox 32.0

Even downgrading to ff28 did not help.

Those error messages from Firefox don't necessarily indicate failure. I would kill the firefox processes and try again, running in headless mode first to rule out X-forwarding issues.

HEADLESS=true bundle exec cucumber ...

Those error messages from Firefox don't necessarily indicate failure. I would kill the firefox processes and try again, running in headless mode first to rule out X-forwarding issues.

HEADLESS=true bundle exec cucumber ...

physik wrote:

Thanks. This changes the problem
And I am at page that does not exist # features/step_definitions/math_steps.rb:13

And I click link Create source                 # features/step_definitions/math_steps.rb:17
  timed out after 5 seconds, waiting for {:text=>"Create source", :tag_name=>"a"} to become present (Watir::Wait::TimeoutError)
  ./features/step_definitions/math_steps.rb:18:in `/^I click link Create source$/'
  features/math.feature:18:in `And I click link Create source'
When I type <math>3 + 2</math>                 # features/step_definitions/math_steps.rb:25

I did not setup an x environment. Is that required?
I tried to set my environment variable BROWSER=phantom but this did not help either.

X isn't required as headless mode runs Firefox through xvfb. Use of phantomjs (note the "js") as the browser is inherently headless so you don't need to specify the HEADLESS env var.

You can also try using X forwarding but it's a little trickier since your labs instance may not allow it. You can inquire on Cloud-Services or #wikimedia-qa IRC channels about getting that setup.

This bug is technically resolved if you're not seeing the firefox connection error. Your feature looks to be executing correctly, and the scenario is either failing positively or falsely. You'll have to jump into the browser session to find our more. Jump on the #wikimedia-qa channel or email the QA list for help! [1]

[1] https://lists.wikimedia.org/mailman/listinfo/qa

physik wrote:

Technically you are right.
I added a section to
https://www.mediawiki.org/wiki/Quality_Assurance/Browser_testing/Running_tests#Running_VisualEditor_browser_tests_via_labs-vagrant