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bpo-30061: Check if PyObject_Size()/PySequence_Size()/PyMapping_Size() (#1096)

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raised an error.

Replace them with using concrete types API that never fails if appropriate.
This commit is contained in:
Serhiy Storchaka 2017-04-19 20:03:52 +03:00 • committed by GitHub
parent c209b70d61
commit bf623ae884
14 changed files with 108 additions and 48 deletions
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16
Lib/test/test_io.py
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@ -543,6 +543,22 @@ class IOTest(unittest.TestCase):
with self.open(support.TESTFN, "r") as f:
self.assertRaises(TypeError, f.readline, 5.3)
def test_readline_nonsizeable(self):
# Issue #30061
# Crash when readline() returns an object without __len__
class R(self.IOBase):
def readline(self):
return None
self.assertRaises((TypeError, StopIteration), next, R())
def test_next_nonsizeable(self):
# Issue #30061
# Crash when __next__() returns an object without __len__
class R(self.IOBase):
def __next__(self):
return None
self.assertRaises(TypeError, R().readlines, 1)
def test_raw_bytes_io(self):
f = self.BytesIO()
self.write_ops(f)