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Issue #25455: Fixed a crash in repr of recursive functools.partial objects.

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This commit is contained in:
Serhiy Storchaka 2016-06-12 11:51:26 +03:00
commit b62ff6eb57
3 changed files with 61 additions and 18 deletions
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37
Lib/test/test_functools.py
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@ -217,6 +217,24 @@ class TestPartialC(TestPartial, unittest.TestCase):
['{}({!r}, {}, {})'.format(name, capture, args_repr, kwargs_repr)
for kwargs_repr in kwargs_reprs])
def test_recursive_repr(self):
if self.partial is c_functools.partial:
name = 'functools.partial'
else:
name = self.partial.__name__
f = self.partial(capture)
f.__setstate__((f, (), {}, {}))
self.assertEqual(repr(f), '%s(%s(...))' % (name, name))
f = self.partial(capture)
f.__setstate__((capture, (f,), {}, {}))
self.assertEqual(repr(f), '%s(%r, %s(...))' % (name, capture, name))
f = self.partial(capture)
f.__setstate__((capture, (), {'a': f}, {}))
self.assertEqual(repr(f), '%s(%r, a=%s(...))' % (name, capture, name))
def test_pickle(self):
f = self.partial(signature, ['asdf'], bar=[True])
f.attr = []
@ -297,6 +315,25 @@ class TestPartialC(TestPartial, unittest.TestCase):
self.assertEqual(r, ((1, 2), {}))
self.assertIs(type(r[0]), tuple)
def test_recursive_pickle(self):
f = self.partial(capture)
f.__setstate__((f, (), {}, {}))
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
with self.assertRaises(RecursionError):
pickle.dumps(f, proto)
f = self.partial(capture)
f.__setstate__((capture, (f,), {}, {}))
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
f_copy = pickle.loads(pickle.dumps(f, proto))
self.assertIs(f_copy.args[0], f_copy)
f = self.partial(capture)
f.__setstate__((capture, (), {'a': f}, {}))
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
f_copy = pickle.loads(pickle.dumps(f, proto))
self.assertIs(f_copy.keywords['a'], f_copy)
# Issue 6083: Reference counting bug
def test_setstate_refcount(self):
class BadSequence: