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gh-92107: Add tests that subscription works on arbitrary named tuple types (GH-92304)

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Serhiy Storchaka 2022-05-04 17:06:50 +03:00 • committed by GitHub
parent 000a072318
commit 9d20e1af40
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12
Lib/test/test_collections.py
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@ -698,6 +698,18 @@ class TestNamedTuple(unittest.TestCase):
Point = namedtuple('Point', 'x y')
self.assertEqual(Point.__match_args__, ('x', 'y'))
def test_non_generic_subscript(self):
# For backward compatibility, subscription works
# on arbitrary named tuple types.
Group = collections.namedtuple('Group', 'key group')
A = Group[int, list[int]]
self.assertEqual(A.__origin__, Group)
self.assertEqual(A.__parameters__, ())
self.assertEqual(A.__args__, (int, list[int]))
a = A(1, [2])
self.assertIs(type(a), Group)
self.assertEqual(a, (1, [2]))
################################################################################
### Abstract Base Classes

14
Lib/test/test_typing.py
View file

@ -5736,6 +5736,20 @@ class NamedTupleTests(BaseTestCase):
with self.assertRaises(TypeError):
G[int, str]
def test_non_generic_subscript(self):
# For backward compatibility, subscription works
# on arbitrary NamedTuple types.
class Group(NamedTuple):
key: T
group: list[T]
A = Group[int]
self.assertEqual(A.__origin__, Group)
self.assertEqual(A.__parameters__, ())
self.assertEqual(A.__args__, (int,))
a = A(1, [2])
self.assertIs(type(a), Group)
self.assertEqual(a, (1, [2]))
def test_namedtuple_keyword_usage(self):
LocalEmployee = NamedTuple("LocalEmployee", name=str, age=int)
nick = LocalEmployee('Nick', 25)