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Update test_baseexception.py from cpython 3.11.2 by dalinaum · Pull Request #4624 · RustPython/RustPython · GitHub

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Update test_baseexception.py from cpython 3.11.2 #4624

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Merged
youknowone merged 2 commits into from
Mar 4, 2023
Conversation 5 Commits 2 Checks 0 Files changed
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Update test_baseexception.py from cpython 3.11.2 #4624

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a7b8768
Update test_baseexception.py from cpython 3.11.2
Mar 4, 2023
9c10d4a
Mark failing tests of test_baseexception.
dalinaum Mar 4, 2023
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36 changes: 33 additions & 3 deletions Lib/test/test_baseexception.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@ def verify_instance_interface(self, ins):
"%s missing %s attribute" %
(ins.__class__.__name__, attr))

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_inheritance(self):
# Make sure the inheritance hierarchy matches the documentation
exc_set = set()
Expand All @@ -28,8 +30,9 @@ def test_inheritance(self):
except TypeError:
pass

inheritance_tree = open(os.path.join(os.path.split(__file__)[0],
'exception_hierarchy.txt'))
inheritance_tree = open(
os.path.join(os.path.split(__file__)[0], 'exception_hierarchy.txt'),
encoding="utf-8")
Comment on lines +33 to +35

fanninpm Mar 4, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

One thing: since this references a file named exception_hierarchy.txt, it would make sense if it could also be brought up to date.

dalinaum Mar 4, 2023

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

I uploaded it as a PR #4627.
try:
superclass_name = inheritance_tree.readline().rstrip()
try:
Expand All @@ -43,7 +46,7 @@ def test_inheritance(self):
last_depth = 0
for exc_line in inheritance_tree:
exc_line = exc_line.rstrip()
depth = exc_line.rindex('-')
depth = exc_line.rindex('─')
exc_name = exc_line[depth+2:] # Slice past space
if '(' in exc_name:
paren_index = exc_name.index('(')
Expand Down Expand Up @@ -117,6 +120,33 @@ def test_interface_no_arg(self):
[repr(exc), exc.__class__.__name__ + '()'])
self.interface_test_driver(results)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_setstate_refcount_no_crash(self):
# gh-97591: Acquire strong reference before calling tp_hash slot
# in PyObject_SetAttr.
import gc
d = {}
class HashThisKeyWillClearTheDict(str):
def __hash__(self) -> int:
d.clear()
return super().__hash__()
class Value(str):
pass
exc = Exception()

d[HashThisKeyWillClearTheDict()] = Value() # refcount of Value() is 1 now

# Exception.__setstate__ should aquire a strong reference of key and
# value in the dict. Otherwise, Value()'s refcount would go below
# zero in the tp_hash call in PyObject_SetAttr(), and it would cause
# crash in GC.
exc.__setstate__(d) # __hash__() is called again here, clearing the dict.

# This GC would crash if the refcount of Value() goes below zero.
gc.collect()


class UsageTests(unittest.TestCase):

"""Test usage of exceptions"""
Expand Down
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