1 files changed, 14 insertions, 0 deletions
diff --git a/test/test_tempfile.rb b/test/test_tempfile.rb
new file mode 100644
index 0000000000..c4234e551d
--- /dev/null
+++ b/test/test_tempfile.rb
@@ -0,0 +1,14 @@
+require 'test/unit'
+require 'tempfile'
+
+class TestTempfile < Test::Unit::TestCase
+  module M
+  end
+
+  def test_extend
+    o = Tempfile.new("foo")
+    o.extend M
+    assert(M === o, "[ruby-dev:32932]")
+  end
+end
+