From 1127a366fd48747bfd23fbb908ac9f8b68598874 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 28 Jan 2017 11:27:32 +0000
Subject: test/unit.rb: minimum workers

* test/lib/test/unit.rb (_run_parallel): launch only necessary
  workers.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57450 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/lib/test/unit.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/lib/test/unit.rb b/test/lib/test/unit.rb
index e8ab158f11..78fa490871 100644
--- a/test/lib/test/unit.rb
+++ b/test/lib/test/unit.rb
@@ -422,7 +422,7 @@ module Test
         @workers_hash = {} # out-IO => worker
         @ios          = [] # Array of worker IOs
         begin
-          @options[:parallel].times {launch_worker}
+          [@tasks.size, @options[:parallel]].min.times {launch_worker}
 
           while _io = IO.select(@ios)[0]
             break if _io.any? do |io|
-- 
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