add test for close-on-exec.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33617 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 0 deletions

diff --git a/test/test_pty.rb b/test/test_pty.rb
index 025cafc8f8..80cc02c72e 100644
--- a/test/test_pty.rb
+++ b/test/test_pty.rb
@@ -195,5 +195,16 @@ class TestPTY < Test::Unit::TestCase
     assert_nil(st1)
     assert_equal(pid, st2.pid)
   end
+
+  def test_cloexec
+    PTY.open {|m, s|
+      assert(m.close_on_exec?)
+      assert(s.close_on_exec?)
+    }
+    PTY.spawn(RUBY, '-e', '') {|r, w, pid|
+      assert(r.close_on_exec?)
+      assert(w.close_on_exec?)
+    }
+  end
 end if defined? PTY