Add Queue Mode for Cucumber

[ArturT]

Changes

This adds Queue Mode for Cucumber test runner so you can run tests with:

bundle exec rake knapsack_pro:queue:cucumber

Also it's possible to use junit formatter to get junit xml reports

bundle exec rake "knapsack_pro:queue:cucumber[--format junit --out tmp/test-reports/cucumber/queue_mode/]"

Supported Queue Hooks in Cucumber Queue Mode

• supported: KnapsackPro::Hooks::Queue.before_queue and KnapsackPro::Hooks::Queue.after_subset_queue
• NOT supported: KnapsackPro::Hooks::Queue.after_queue

# features/support/knapsack_pro.rb
KnapsackPro::Hooks::Queue.before_queue do |queue_id|
  print 'Before Queue Hook - run before test suite'
end

KnapsackPro::Hooks::Queue.after_subset_queue do |queue_id, subset_queue_id|
  print 'After Subset Queue Hook - run after subset of test suite'
end

# this hook is not supported and won't run
KnapsackPro::Hooks::Queue.after_queue do |queue_id|
  print 'After Queue Hook - run after test suite'
end

Additional info for development of this gem

why we don't use rake task

• We don't use Rake task invoke/execute because when test fails then the whole process exits immediately and because of that we can't run another set of tests from Queue.

          task_name = "knapsack_pro:cucumber_run:#{ENV.fetch('KNAPSACK_PRO_SUBSET_QUEUE_ID')}"
          Cucumber::Rake::Task.new(task_name) do |t|
            t.cucumber_opts = "#{args} --require #{runner.test_dir} -- #{stringify_test_file_paths}"
          end
          #Rake::Task[task_name].invoke
          Rake::Task[task_name].execute

Instead we call bundle exec cucumber with arguments to run Cucumber for each set of tests fetched from Queue.

[sergiopantoja]

This is awesome!

[ArturT]

@sergiopantoja Thanks for checking it. Let's connect https://www.linkedin.com/in/arturtrzop/

Do you already have an account to test this cucumber integration?

[sergiopantoja]

@ArturT Yup. We have the cucumber queue running in our CI already and it seems to be working great. Added you on LinkedIn. 👍