knapsack.rake

# we don't have knapsack in our :production gems group, so the deploy would fail without this condition
if Rails.env.development? || Rails.env.test?
  require 'knapsack'

  # we have multiple nodes, so we need different files for each node
  def failing_scenarios_filename
    "failing_scenarios_#{ENV['CIRCLE_NODE_INDEX']}.txt"
  end

  namespace :knapsack do
    task :cucumber_record_failing, [:cucumber_args] do |t, args|
      allocator = Knapsack::AllocatorBuilder.new(Knapsack::Adapters::CucumberAdapter).allocator

      puts
      puts 'Report features:'
      puts allocator.report_node_tests
      puts
      puts 'Leftover features:'
      puts allocator.leftover_node_tests
      puts

      # run cucumber and record failing scenarios to the file, exit 0, we don't want failed build because of this
      cmd = %Q[bundle exec cucumber #{args[:cucumber_args]} -f rerun --out #{failing_scenarios_filename} -- #{allocator.stringify_node_tests}; exit 0]

      exec(cmd)
    end

    task :cucumber_rerun, [:cucumber_args] do |t, args|
      # we don't need to run cucumber again if all scenarios passed
      unless File.zero?("#{failing_scenarios_filename}")
        puts
        puts 'Rerun failing cucumber specs:'
        puts

        # run cucumber with failing scenarios only
        cmd = %Q[bundle exec cucumber #{args[:cucumber_args]} @#{failing_scenarios_filename}]
        exec(cmd)
      end
    end
  end
end