add depreciation.attribute_renamed

1 files changed, 22 insertions, 0 deletions

diff --git a/test/unittest_deprecation.py b/test/unittest_deprecation.py
index d82c2bc..7778325 100644
--- a/test/unittest_deprecation.py
+++ b/test/unittest_deprecation.py
@@ -71,6 +71,28 @@ class RawInputTC(TestCase):
         self.assertEqual(self.messages,
                          ['The function "any_func" is deprecated', 'message'])
 
+    def test_attribute_renamed(self):
+        @deprecation.attribute_renamed(old_name="old", new_name="new")
+        class SomeClass:
+            def __init__(self):
+                self.new = 42
+
+        some_class = SomeClass()
+        self.assertEqual(some_class.old, some_class.new)
+        self.assertEqual(self.messages,
+                         ['SomeClass.old has been renamed and is deprecated, use SomeClass.new '
+                          'instead'])
+
+        some_class.old = 43
+        self.assertEqual(some_class.old, 43)
+        self.assertEqual(some_class.old, some_class.new)
+
+        self.assertTrue(hasattr(some_class, "new"))
+        self.assertTrue(hasattr(some_class, "old"))
+        del some_class.old
+        self.assertFalse(hasattr(some_class, "new"))
+        self.assertFalse(hasattr(some_class, "old"))
+
     def test_renamed(self):
         def any_func():
             pass