1 files changed, 17 insertions, 0 deletions
diff --git a/test/psych/test_class.rb b/test/psych/test_class.rb
new file mode 100644
index 0000000000..02c4c1ee90
--- /dev/null
+++ b/test/psych/test_class.rb
@@ -0,0 +1,17 @@
+require 'test/psych/helper'
+
+module Psych
+  class TestClass < TestCase
+    def test_cycle
+      assert_raises(::TypeError) do
+        assert_cycle(TestClass)
+      end
+    end
+
+    def test_dump
+      assert_raises(::TypeError) do
+        Psych.dump TestClass
+      end
+    end
+  end
+end