8000 gh-117797: Improve `test_descr.test_not_implemented` by sobolevn · Pull Request #117798 · python/cpython · GitHub
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gh-117797: Improve test_descr.test_not_implemented #117798

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Merged
merged 3 commits into from
Apr 16, 2024
Merged

gh-117797: Improve test_descr.test_not_implemented #117798

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7ac3ebf
gh-117797: Improve `test_descr.test_not_implemented`
sobolevn Apr 12, 2024
a62d8bb
Address review
sobolevn Apr 16, 2024
251f430
Typo!
sobolevn Apr 16, 2024
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gh-117797: Improve test_descr.test_not_implemented
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@sobolevn
sobolevn committed Apr 12, 2024
commit 7ac3ebf4f8ba0914c62d73b5b3b5a85c1a3c79be
21 changes: 14 additions & 7 deletions Lib/test/test_descr.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4594,18 +4594,16 @@ def test_special_unbound_method_types(self):
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
Expand All @@ -4632,6 +4630,15 @@ def check(expr, x, y):
check(expr, a, a)
check(expr, a, N1)
check(expr, a, N2)
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)
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