odaira	2016-03-09 09:28:41 +0900 (Wed, 09 Mar 2016)

  New Revision: 54047

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54047

  Log:
    * test/io/wait/test_io_wait.rb (test_wait_readwrite_timeout):
      select(2) in AIX returns "readable" for the write-side fd
      of a pipe, so it is not possible to use a pipe to test
      the read-write timeout of IO#wait on AIX.

  Modified files:
    trunk/ChangeLog
    trunk/test/io/wait/test_io_wait.rb
Index: test/io/wait/test_io_wait.rb
===================================================================
--- test/io/wait/test_io_wait.rb	(revision 54046)
+++ test/io/wait/test_io_wait.rb	(revision 54047)
@@ -141,7 +141,14 @@ class TestIOWait < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/io/wait/test_io_wait.rb#L141
   def test_wait_readwrite_timeout
     assert_equal @w, @w.wait(0.01, :read_write)
     written = fill_pipe
-    assert_nil @w.wait(0.01, :read_write)
+    if /aix/ =~ RUBY_PLATFORM
+      # IO#wait internally uses select(2) on AIX.
+      # AIX's select(2) returns "readable" for the write-side fd
+      # of a pipe, so @w.wait(0.01, :read_write) does not return nil.
+      assert_equal @w, @w.wait(0.01, :read_write)
+    else
+      assert_nil @w.wait(0.01, :read_write)
+    end
     @r.read(written)
     assert_equal @w, @w.wait(0.01, :read_write)
   end
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 54046)
+++ ChangeLog	(revision 54047)
@@ -1,3 +1,10 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Wed Mar  9 09:19:55 2016  Rei Odaira  <Rei.Odaira@g...>
+
+	* test/io/wait/test_io_wait.rb (test_wait_readwrite_timeout):
+	  select(2) in AIX returns "readable" for the write-side fd
+	  of a pipe, so it is not possible to use a pipe to test
+	  the read-write timeout of IO#wait on AIX.
+
 Wed Mar  9 03:35:22 2016  Charles Oliver Nutter  <headius@h...>
 
 	* test/ruby/test_require.rb (test_require_with_loaded_features_pop):

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