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gh-124722: Fix leak in test_detach_materialized_dict_no_memory #124769

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Merged
merged 2 commits into from
Sep 30, 2024
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gh-124722: Fix leak in test_detach_materialized_dict_no_memory #124769

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d42f6c0
gh-124722: Fix leak in `test_detach_materialized_dict_no_memory`
sobolevn Sep 29, 2024
e7a409b
gh-124722: Fix leak in `test_detach_materialized_dict_no_memory`
sobolevn Sep 29, 2024
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44 changes: 30 additions & 14 deletions Lib/test/test_class.py
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
"Test the functionality of Python classes implementing operators."

import unittest
import test.support
from test.support import cpython_only, import_helper, script_helper

testmeths = [

Expand Down Expand Up @@ -933,20 +933,36 @@ class C:
C.a = X()
C.a = X()

@cpython_only
def test_detach_materialized_dict_no_memory(self):
import _testcapi
class A:
def __init__(self):
self.a = 1
self.b = 2
a = A()
d = a.__dict__
with test.support.catch_unraisable_exception() as ex:
_testcapi.set_nomemory(0, 1)
del a
self.assertEqual(ex.unraisable.exc_type, MemoryError)
with self.assertRaises(KeyError):
d["a"]
# Skip test if _testcapi is not available:
import_helper.import_module('_testcapi')

code = """if 1:
import test.support
import _testcapi

class A:
def __init__(self):
self.a = 1
self.b = 2
a = A()
d = a.__dict__
with test.support.catch_unraisable_exception() as ex:
_testcapi.set_nomemory(0, 1)
del a
assert ex.unraisable.exc_type is MemoryError
try:
d["a"]
except KeyError:
pass
else:
assert False, "KeyError not raised"
"""
rc, out, err = script_helper.assert_python_ok("-c", code)
self.assertEqual(rc, 0)
self.assertFalse(out, msg=out.decode('utf-8'))
self.assertFalse(err, msg=err.decode('utf-8'))

if __name__ == '__main__':
unittest.main()
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