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gh-117797: Improve `test_descr.test_not_implemented` (#117798)

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Nikita Sobolev 2024-04-16 12:11:57 +03:00 committed by GitHub
parent 2cc916e147
commit 1a1e013a4a
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1 changed files with 17 additions and 8 deletions
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25
Lib/test/test_descr.py
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@ -4594,18 +4594,16 @@ class ClassPropertiesAndMethods(unittest.TestCase):
def test_not_implemented(self):
# Testing NotImplemented...
# all binary methods should be able to return a NotImplemented
import operator
def specialmethod(self, other):
return NotImplemented
def check(expr, x, y):
try:
exec(expr, {'x': x, 'y': y, 'operator': operator})
except TypeError:
pass
else:
self.fail("no TypeError from %r" % (expr,))
with (
self.subTest(expr=expr, x=x, y=y),
self.assertRaises(TypeError),
):
exec(expr, {'x': x, 'y': y})
N1 = sys.maxsize + 1 # might trigger OverflowErrors instead of
# TypeErrors
@ -4626,12 +4624,23 @@ class ClassPropertiesAndMethods(unittest.TestCase):
('__and__', 'x & y', 'x &= y'),
('__or__', 'x | y', 'x |= y'),
('__xor__', 'x ^ y', 'x ^= y')]:
rname = '__r' + name[2:]
# Defines 'left' magic method:
A = type('A', (), {name: specialmethod})
a = A()
check(expr, a, a)
check(expr, a, N1)
check(expr, a, N2)
# Defines 'right' magic method:
rname = '__r' + name[2:]
B = type('B', (), {rname: specialmethod})
b = B()
check(expr, b, b)
check(expr, a, b)
check(expr, b, a)
check(expr, b, N1)
check(expr, b, N2)
check(expr, N1, b)
check(expr, N2, b)
if iexpr:
check(iexpr, a, a)
check(iexpr, a, N1)