* test/ruby/test_io.rb: New test that open(fifo) doesn't block other

threads.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@50257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sun Apr 12 13:54:05 2015  Tanaka Akira  <akr@fsij.org>
+
+	* test/ruby/test_io.rb: New test that open(fifo) doesn't block other
+	  threads.
+
 Sun Apr 12 13:52:18 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* ext/coverage/coverage.c: Remove extension from require argument.

test/ruby/test_io.rb

@@ -3178,4 +3178,18 @@ End
     assert_raise(IOError) { io.close }
   end
 
+  def test_open_fifo_does_not_block_other_threads
+    mkcdtmpdir {
+      assert(system("mkfifo", "fifo"), "mkfifo fails")
+      assert_separately([], <<-'EOS')
+        t = Thread.new {
+          open("fifo") {}
+        }
+        sleep 0.1 until t.status == "sleep"
+        sleep 0.1
+        assert(true)
+      EOS
+    }
+  end if /mswin|mingw|bccwin/ !~ RUBY_PLATFORM
+
 end