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gh-109956: Also test typing.NamedTuple with copy.replace() (GH-109957)

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Nikita Sobolev 2023-10-03 14:13:13 +03:00 • committed by GitHub
parent 8c071373f1
commit bb2e96f6f4
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1 changed files with 18 additions and 8 deletions
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26
Lib/test/test_copy.py
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@ -936,14 +936,24 @@ class TestReplace(unittest.TestCase):
def test_namedtuple(self):
from collections import namedtuple
Point = namedtuple('Point', 'x y', defaults=(0,))
p = Point(11, 22)
self.assertEqual(copy.replace(p), (11, 22))
self.assertEqual(copy.replace(p, x=1), (1, 22))
self.assertEqual(copy.replace(p, y=2), (11, 2))
self.assertEqual(copy.replace(p, x=1, y=2), (1, 2))
with self.assertRaisesRegex(ValueError, 'unexpected field name'):
copy.replace(p, x=1, error=2)
from typing import NamedTuple
PointFromCall = namedtuple('Point', 'x y', defaults=(0,))
class PointFromInheritance(PointFromCall):
pass
class PointFromClass(NamedTuple):
x: int
y: int = 0
for Point in (PointFromCall, PointFromInheritance, PointFromClass):
with self.subTest(Point=Point):
p = Point(11, 22)
self.assertIsInstance(p, Point)
self.assertEqual(copy.replace(p), (11, 22))
self.assertIsInstance(copy.replace(p), Point)
self.assertEqual(copy.replace(p, x=1), (1, 22))
self.assertEqual(copy.replace(p, y=2), (11, 2))
self.assertEqual(copy.replace(p, x=1, y=2), (1, 2))
with self.assertRaisesRegex(ValueError, 'unexpected field name'):
copy.replace(p, x=1, error=2)
def test_dataclass(self):
from dataclasses import dataclass