rake tasks for Rails 3+
copied from github.com/carlhuda/bundler Bundler::SharedHelpers#find_gemfile
# File lib/parallel_tests.rb, line 28 def bundler_enabled? return true if Object.const_defined?(:Bundler) previous = nil current = File.expand_path(Dir.pwd) until !File.directory?(current) || current == previous filename = File.join(current, "Gemfile") return true if File.exist?(filename) current, previous = File.expand_path("..", current), current end false end
# File lib/parallel_tests.rb, line 84 def delta before = now.to_f yield now.to_f - before end
# File lib/parallel_tests.rb, line 19 def determine_number_of_processes(count) [ count, ENV["PARALLEL_TEST_PROCESSORS"], Parallel.processor_count ].detect{|c| not c.to_s.strip.empty? }.to_i end
# File lib/parallel_tests.rb, line 43 def first_process? ENV["TEST_ENV_NUMBER"].to_i <= 1 end
# File lib/parallel_tests.rb, line 47 def last_process? current_process_number = ENV['TEST_ENV_NUMBER'] total_processes = ENV['PARALLEL_TEST_GROUPS'] return true if current_process_number.nil? && total_processes.nil? current_process_number = '1' if current_process_number.nil? current_process_number == total_processes end
real time even if someone messed with timecop in tests
# File lib/parallel_tests.rb, line 76 def now if Time.respond_to?(:now_without_mock_time) # Timecop Time.now_without_mock_time else Time.now end end
Fun fact: this includes the current process if it's run via parallel_tests
# File lib/parallel_tests.rb, line 69 def number_of_running_processes result = %x#{GREP_PROCESSES_COMMAND}` raise "Could not grep for processes -> #{result}" if result.strip != "" && !$?.success? result.split("\n").size end
# File lib/parallel_tests.rb, line 55 def parent_pid if WINDOWS %xwmic process where (processid=#{Process.pid}) get parentprocessid` else %xps -o ppid= -p#{`ps -o ppid= -p#{Process.pid}`}` #the true parent is one layer up. end.to_i end
# File lib/parallel_tests.rb, line 63 def wait_for_other_processes_to_finish return unless ENV["TEST_ENV_NUMBER"] sleep 1 until number_of_running_processes <= 1 end