Rails 3.1 Capybara jQuery is not defined

Question

I keep on getting this error:

 Failure/Error: page.evaluate_script('jQuery.active') == 0
 Selenium::WebDriver::Error::JavascriptError:
   ReferenceError: jQuery is not defined

whenever I use the script:

wait_until do
  page.evaluate_script('jQuery.active') == 0
end

I've put in a debugger and checked for the jQuery library. It was existing on the particular page.

Is there something I need to configure for this to work?

EDIT:

Versions of Capybara and RSpec are:

rspec-rails-2.11.0 rspec-2.11.0 capybara-1.1.2

Answer 1

I ran into the same issue. I solved it by dropping a binding.pry in the test and stopping the selenium browser. Upon inspection, I noticed that the js console had thrown errors: Selenium could not find a .js file.

The root of the problem was an outdated rails test application preloaded with spring. I had installed a gem (moment-timezone-rails) but was still continuing to run my tests with 'spring rspec,' which didn't have the proper directory to find the js file.

restarting spring fixed the problem.

Answer 2

The error implies your example does have js:true, but it would be good to post a complete example here.

I found that switching from the default selenium driver to webkit solved a few different issues for me, and also examples run much faster.

Not an answer, per se, but it's worth trying to see if it solves your particular issue.