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ruby-changes:51738

From: normal <ko1@a...>
Date: Wed, 11 Jul 2018 18:47:41 +0900 (JST)
Subject: [ruby-changes:51738] normal:r63950 (trunk): test/ruby/test_io.rb: skip garbage and CPU tests if multi-threaded

normal	2018-07-11 18:47:36 +0900 (Wed, 11 Jul 2018)

  New Revision: 63950

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63950

  Log:
    test/ruby/test_io.rb: skip garbage and CPU tests if multi-threaded
    
    Threads should not be active during these tests, but
    maybe they are...
    
    ref: https://bugs.ruby-lang.org/issues/14906

  Modified files:
    trunk/test/ruby/test_io.rb
Index: test/ruby/test_io.rb
===================================================================
--- test/ruby/test_io.rb	(revision 63949)
+++ test/ruby/test_io.rb	(revision 63950)
@@ -550,6 +550,7 @@ class TestIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L550
     def test_copy_stream_no_busy_wait
       # JIT has busy wait on GC. It's hard to test this with JIT.
       skip "MJIT has busy wait on GC. We can't test this with JIT." if RubyVM::MJIT.enabled?
+      skip "multiple threads already active" if Thread.list.size > 1
 
       msg = 'r58534 [ruby-core:80969] [Backport #13533]'
       IO.pipe do |r,w|
@@ -3701,6 +3702,7 @@ __END__ https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L3702
     end
 
     def test_write_no_garbage
+      skip "multiple threads already active" if Thread.list.size > 1
       res = {}
       ObjectSpace.count_objects(res) # creates strings on first call
       [ 'foo'.b, '*' * 24 ].each do |buf|

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