1 files changed, 16 insertions, 0 deletions
diff --git a/test/zlib/test_zlib.rb b/test/zlib/test_zlib.rb
new file mode 100644
index 0000000000..b148553be6
--- /dev/null
+++ b/test/zlib/test_zlib.rb
@@ -0,0 +1,16 @@
+require 'test/unit/testsuite'
+require 'test/unit/testcase'
+
+require 'zlib'
+
+class TestZlibGzipWriter < Test::Unit::TestCase
+  def test_new_nil # [ruby-dev:23228]
+    old = $VERBOSE
+    $VERBOSE = nil
+    begin
+      assert_raises(NoMethodError) { Zlib::GzipWriter.new(nil).close }
+    ensure
+      $VERBOSE = old
+    end
+  end
+end