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-rw-r--r--lib/minitest/parallel_each.rb80
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diff --git a/lib/minitest/parallel_each.rb b/lib/minitest/parallel_each.rb
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--- a/lib/minitest/parallel_each.rb
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-# encoding: utf-8
-######################################################################
-# This file is imported from the minitest project.
-# DO NOT make modifications in this repo. They _will_ be reverted!
-# File a patch instead and assign it to Ryan Davis.
-######################################################################
-
-##
-# Provides a parallel #each that lets you enumerate using N threads.
-# Use environment variable N to customize. Defaults to 2. Enumerable,
-# so all the goodies come along (tho not all are wrapped yet to
-# return another ParallelEach instance).
-
-class ParallelEach
- require 'thread'
- include Enumerable
-
- ##
- # How many Threads to use for this parallel #each.
-
- N = (ENV['N'] || 2).to_i
-
- ##
- # Create a new ParallelEach instance over +list+.
-
- def initialize list
- @queue = Queue.new # *sigh*... the Queue api sucks sooo much...
-
- list.each { |i| @queue << i }
- N.times { @queue << nil }
- end
-
- def grep pattern # :nodoc:
- self.class.new super
- end
-
- def select(&block) # :nodoc:
- self.class.new super
- end
-
- alias find_all select # :nodoc:
-
- ##
- # Starts N threads that yield each element to your block. Joins the
- # threads at the end.
-
- def each
- threads = N.times.map {
- Thread.new do
- Thread.current.abort_on_exception = true
- while job = @queue.pop
- yield job
- end
- end
- }
- threads.map(&:join)
- end
-
- def count
- [@queue.size - N, 0].max
- end
-
- alias_method :size, :count
-end
-
-class MiniTest::Unit
- alias _old_run_suites _run_suites
-
- ##
- # Runs all the +suites+ for a given +type+. Runs suites declaring
- # a test_order of +:parallel+ in parallel, and everything else
- # serial.
-
- def _run_suites suites, type
- parallel, serial = suites.partition { |s| s.test_order == :parallel }
-
- ParallelEach.new(parallel).map { |suite| _run_suite suite, type } +
- serial.map { |suite| _run_suite suite, type }
- end
-end