1 files changed, 15 insertions, 0 deletions
diff --git a/test/test_singleton.rb b/test/test_singleton.rb
new file mode 100644
index 0000000000..bd11095cf2
--- /dev/null
+++ b/test/test_singleton.rb
@@ -0,0 +1,15 @@
+require 'test/unit'
+require 'singleton'
+
+class TestSingleton < Test::Unit::TestCase
+  class C
+    include Singleton
+  end
+
+  def test_marshal
+    o1 = C.instance
+    m = Marshal.dump(o1)
+    o2 = Marshal.load(m)
+    assert_same(o1, o2)
+  end
+end