Rename buffer -> bytearray.
diff --git a/Lib/test/test_unicodedata.py b/Lib/test/test_unicodedata.py
index ba97e5d..c4ea816 100644
--- a/Lib/test/test_unicodedata.py
+++ b/Lib/test/test_unicodedata.py
@@ -177,7 +177,7 @@
     def test_east_asian_width(self):
         eaw = self.db.east_asian_width
         self.assertRaises(TypeError, eaw, b'a')
-        self.assertRaises(TypeError, eaw, buffer())
+        self.assertRaises(TypeError, eaw, bytearray())
         self.assertRaises(TypeError, eaw, '')
         self.assertRaises(TypeError, eaw, 'ra')
         self.assertEqual(eaw('\x1e'), 'N')