From b5e5d0741a7a9b8219abac143e06f40b804886c9 Mon Sep 17 00:00:00 2001 From: Raymond Hettinger Date: Wed, 14 Nov 2007 23:02:30 +0000 Subject: [PATCH] Add test for __fields__ being read-only --- Lib/test/test_collections.py | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py index 348919f42d..04d4d9d246 100644 --- a/Lib/test/test_collections.py +++ b/Lib/test/test_collections.py @@ -43,6 +43,14 @@ class TestNamedTuple(unittest.TestCase): 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) -- 2.50.1