[Python-checkins] r58972 - python/trunk/Lib/test/test_collections.py

[raymond.hettinger]

Author: raymond.hettinger
Date: Thu Nov 15 00:02:30 2007
New Revision: 58972

Modified:
   python/trunk/Lib/test/test_collections.py
Log:
Add test for __fields__ being read-only

Modified: python/trunk/Lib/test/test_collections.py
==============================================================================
--- python/trunk/Lib/test/test_collections.py	(original)
+++ python/trunk/Lib/test/test_collections.py	Thu Nov 15 00:02:30 2007
@@ -43,6 +43,14 @@
         self.assertEqual(p.__replace__('x', 1), (1, 22))                    # test __replace__ method
         self.assertEqual(p.__asdict__(), dict(x=11, y=22))                  # test __dict__ method
 
+        # Verify that __fields__ is read-only
+        try:
+            p.__fields__ = ('F1' ,'F2')
+        except AttributeError:
+            pass
+        else:
+            self.fail('The __fields__ attribute needs to be read-only')
+
         # verify that field string can have commas
         Point = namedtuple('Point', 'x, y')
         p = Point(x=11, y=22)