Speed Up Capybara JavaScript tests by blacklisting URLs

(RSpec + Capybara + Poltergeist)

Vlado Cingel / vlado@cingel.hr

Let's fix it quickly ...

# spec/rails_helper.rb
stub_request(:get, 'https://embed-ssl.wistia.com')
stub_request(:get, 'https://fast.wistia.com')

NOT

QuickFix^TM

<% unless Rails.env.test? %>
  <%= embed_wistia_video %>
<% end %>

https://robots.thoughtbot.com/speed-up-javascript-capybara-specs-by-blacklisting-urls

https://robots.thoughtbot.com/speed-up-javascript-capybara-specs-by-blacklisting-urls

Final solution

# Gemfile
gem "poltergeist", ">= 1.6.0"
              # spec/rails_helper.rb
RSpec.configure do |config|

  config.before(:each, js: true) do
    page.driver.browser.url_blacklist = [
      "fonts.googleapis.com",
      "wistia.com"
    ]
  end

end

THANK YOU!

QUESTIONS?

vlado@cingel.hr