[Rails] Raisl 4.2 + Capybara + Paperclip = Race condition

Ruby on Rails Tuesday, January 6, 2015

Hi!

I'm upgrading a small Rails 4.1.x app to 4.2.

All my test suite is passing, except one spec:

    scenario "showing a video called from a track" do
      visit video_path(video, level_id: level.id)
      sign_in create(:confirmed_user)

      expect(page).to have_selector "video[poster=\"#{video.poster(:original)}\"]"      
    end

Here is the factory:

FactoryGirl.define do
  factory :video do
    title "Cadastrando um cliente"
    poster { Rack::Test::UploadedFile.new("#{::Rails.root}/spec/fixtures/image.png", "image/png") }
    video { Rack::Test::UploadedFile.new("#{::Rails.root}/spec/fixtures/video.mp4", "video/mp4") }
  end
end

That's the problem:

Video Pages
    when showing
      showing a video called from a track (FAILED - 1)
    HTML screenshot: /Users/cezinha/dev/universidade/tmp/capybara/2015-01-06-09-31-30-screenshot-showing-a-video-called-from-a-track.html
  
  Failures:
  
    1) Video Pages when showing showing a video called from a track
       Failure/Error: expect(page).to have_selector "video[poster=\"#{video.poster(:original)}\"]"
         expected to find css "video[poster=\"/system/videos/posters/000/000/001/original/image.png?1420543889\"]" but there were no matches
       # ./spec/features/video_spec.rb:66:in `block (3 levels) in <top (required)>'

When I inspect the generated HTML I have:

<video class="img-responsive"
            controls preload autoplay poster="/system/videos/posters/000/000/001/original/image.png?1420543954"
            data-level_id=1
           <source src=/system/videos/videos/000/000/001/original/video.mp4?1420543954 type="video/mp4" />

When I inspect the video.poster(:original) I have:


/system/videos/posters/000/000/001/original/image.png?1420543953

The worst: sometimes it pass and sometimes not.

My impression is that the content of the file is changing while I'm testing and because of this, the fingerprint is different too.

Does anyone can help me?

Thanks.

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[Rails] Raisl 4.2 + Capybara + Paperclip = Race condition

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