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-rw-r--r--Lib/test/test_collections.py7
1 files changed, 7 insertions, 0 deletions
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index f5dad7d223..94015b42d3 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -30,6 +30,13 @@ class TestNamedTuple(unittest.TestCase):
self.assertEqual(repr(p), 'Point(x=11, y=22)')
self.assert_('__dict__' not in dir(p)) # verify instance has no dict
self.assert_('__weakref__' not in dir(p))
+ self.assertEqual(p.__fields__, ('x', 'y')) # test __fields__ attribute
+ self.assertEqual(p.__replace__('x', 1), (1, 22)) # test __replace__ method
+
+ # verify that field string can have commas
+ Point = NamedTuple('Point', 'x, y')
+ p = Point(x=11, y=22)
+ self.assertEqual(repr(p), 'Point(x=11, y=22)')
def test_tupleness(self):
Point = NamedTuple('Point', 'x y')