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Update test_exceptions.py from Cpython v3.11.2 #4819

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merged 1 commit into from
Apr 3, 2023
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Update test_exceptions.py from Cpython v3.11.2 #4819

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139 changes: 121 additions & 18 deletions Lib/test/test_exceptions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -258,6 +258,8 @@ def testSyntaxErrorOffset(self):
check('def f():\n continue', 2, 3)
check('def f():\n break', 2, 3)
check('try:\n pass\nexcept:\n pass\nexcept ValueError:\n pass', 3, 1)
check('try:\n pass\nexcept*:\n pass', 3, 8)
check('try:\n pass\nexcept*:\n pass\nexcept* ValueError:\n pass', 3, 8)

# Errors thrown by tokenizer.c
check('(0x+1)', 1, 3)
Expand Down Expand Up @@ -555,6 +557,35 @@ def testAttributes(self):
'pickled "%r", attribute "%s' %
(e, checkArgName))

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_notes(self):
for e in [BaseException(1), Exception(2), ValueError(3)]:
with self.subTest(e=e):
self.assertFalse(hasattr(e, '__notes__'))
e.add_note("My Note")
self.assertEqual(e.__notes__, ["My Note"])

with self.assertRaises(TypeError):
e.add_note(42)
self.assertEqual(e.__notes__, ["My Note"])

e.add_note("Your Note")
self.assertEqual(e.__notes__, ["My Note", "Your Note"])

del e.__notes__
self.assertFalse(hasattr(e, '__notes__'))

e.add_note("Our Note")
self.assertEqual(e.__notes__, ["Our Note"])

e.__notes__ = 42
self.assertEqual(e.__notes__, 42)

with self.assertRaises(TypeError):
e.add_note("will not work")
self.assertEqual(e.__notes__, 42)

def testWithTraceback(self):
try:
raise IndexError(4)
Expand Down Expand Up @@ -1010,20 +1041,20 @@ def do_send(g):
self.fail("should have raised StopIteration")
self._check_generator_cleanup_exc_state(do_send)

# def test_3114(self):
# # Bug #3114: in its destructor, MyObject retrieves a pointer to
# # obsolete and/or deallocated objects.
# class MyObject:
# def __del__(self):
# nonlocal e
# e = sys.exc_info()
# e = ()
# try:
# raise Exception(MyObject())
# except:
# pass
# gc_collect() # For PyPy or other GCs.
# self.assertEqual(e, (None, None, None))
def test_3114(self):
# Bug #3114: in its destructor, MyObject retrieves a pointer to
# obsolete and/or deallocated objects.
class MyObject:
def __del__(self):
nonlocal e
e = sys.exc_info()
e = ()
try:
raise Exception(MyObject())
except:
pass
gc_collect() # For PyPy or other GCs.
self.assertEqual(e, (None, None, None))

def test_raise_does_not_create_context_chain_cycle(self):
class A(Exception):
Expand Down Expand Up @@ -1173,6 +1204,56 @@ class E(Exception):
self.assertIs(b.__context__, a)
self.assertIs(a.__context__, c)

def test_context_of_exception_in_try_and_finally(self):
try:
try:
te = TypeError(1)
raise te
finally:
ve = ValueError(2)
raise ve
except Exception as e:
exc = e

self.assertIs(exc, ve)
self.assertIs(exc.__context__, te)

def test_context_of_exception_in_except_and_finally(self):
try:
try:
te = TypeError(1)
raise te
except:
ve = ValueError(2)
raise ve
finally:
oe = OSError(3)
raise oe
except Exception as e:
exc = e

self.assertIs(exc, oe)
self.assertIs(exc.__context__, ve)
self.assertIs(exc.__context__.__context__, te)

def test_context_of_exception_in_else_and_finally(self):
try:
try:
pass
except:
pass
else:
ve = ValueError(1)
raise ve
finally:
oe = OSError(2)
raise oe
except Exception as e:
exc = e

self.assertIs(exc, oe)
self.assertIs(exc.__context__, ve)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_unicode_change_attributes(self):
Expand Down Expand Up @@ -1410,9 +1491,7 @@ def recurse(cnt):
"""
with SuppressCrashReport():
rc, out, err = script_helper.assert_python_failure("-c", code)
self.assertIn(b'Fatal Python error: _PyErr_NormalizeException: '
b'Cannot recover from MemoryErrors while '
b'normalizing exceptions.', err)
self.assertIn(b'MemoryError', err)

@cpython_only
def test_MemoryError(self):
Expand Down Expand Up @@ -2008,6 +2087,8 @@ def test_attributes(self):
self.assertEqual(exc.name, 'carry')
self.assertIs(exc.obj, sentinel)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_getattr_has_name_and_obj(self):
class A:
blech = None
Expand All @@ -2018,6 +2099,11 @@ class A:
except AttributeError as exc:
self.assertEqual("bluch", exc.name)
self.assertEqual(obj, exc.obj)
try:
object.__getattribute__(obj, "bluch")
except AttributeError as exc:
self.assertEqual("bluch", exc.name)
self.assertEqual(obj, exc.obj)

def test_getattr_has_name_and_obj_for_method(self):
class A:
Expand Down Expand Up @@ -2526,6 +2612,23 @@ def test_incorrect_constructor(self):
self.assertRaises(TypeError, SyntaxError, "bad bad", args)


class TestInvalidExceptionMatcher(unittest.TestCase):
# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_except_star_invalid_exception_type(self):
with self.assertRaises(TypeError):
try:
raise ValueError
except 42:
pass

with self.assertRaises(TypeError):
try:
raise ValueError
except (ValueError, 42):
pass


class PEP626Tests(unittest.TestCase):

def lineno_after_raise(self, f, *expected):
Expand Down Expand Up @@ -2628,7 +2731,7 @@ def test_missing_lineno_shows_as_none(self):
def f():
1/0
self.lineno_after_raise(f, 1)
f.__code__ = f.__code__.replace(co_linetable=b'\x04\x80\xff\x80')
f.__code__ = f.__code__.replace(co_linetable=b'\xf8\xf8\xf8\xf9\xf8\xf8\xf8')
self.lineno_after_raise(f, None)

def test_lineno_after_raise_in_with_exit(self):
Expand Down