+#!/usr/bin/env python3
+
+import unittest
+
+import decorator_utils as du
+
+import unittest_utils as uu
+
+
+class TestDecorators(unittest.TestCase):
+
+ def test_singleton(self):
+
+ @du.singleton
+ class FooBar():
+ pass
+
+ x = FooBar()
+ y = FooBar()
+ self.assertTrue(x is y)
+
+
+if __name__ == '__main__':
+ unittest.main()