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gh-94499 Add test for private name mangling in class pattern matching #94500

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Merged
merged 4 commits into from
Jul 13, 2022
Merged

gh-94499 Add test for private name mangling in class pattern matching #94500

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39b2acd
Add test for private name mangling in class pattern matching
da-woods Jul 1, 2022
108e2b4
Use alternative suggestion for test
da-woods Jul 7, 2022
3568e39
Change attr assignment again
da-woods Jul 7, 2022
97554c9
'__attr' to 'spam'
da-woods Jul 13, 2022
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14 changes: 14 additions & 0 deletions Lib/test/test_patma.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2654,6 +2654,20 @@ def get(key, default=None):

self.assertEqual(y, 'bar')

def test_patma_249(self):
class C:
__attr = "eggs" # mangled to _C__attr
_Outer__attr = "bacon"
class Outer:
def f(self, x):
match x:
# looks up __attr, not _C__attr or _Outer__attr
case C(__attr=y):
return y
c = C()
setattr(c, "__attr", "spam") # setattr is needed because we're in a class scope
self.assertEqual(Outer().f(c), "spam")


class TestSyntaxErrors(unittest.TestCase):

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