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import pickle
import io
import collections
from test import support
from test.pickletester import AbstractPickleTests
from test.pickletester import AbstractPickleModuleTests
from test.pickletester import AbstractPersistentPicklerTests
from test.pickletester import AbstractPicklerUnpicklerObjectTests
from test.pickletester import AbstractDispatchTableTests
from test.pickletester import BigmemPickleTests
try:
import _pickle
has_c_implementation = True
except ImportError:
has_c_implementation = False
class PickleTests(AbstractPickleModuleTests):
pass
class PyPicklerTests(AbstractPickleTests):
pickler = pickle._Pickler
unpickler = pickle._Unpickler
def dumps(self, arg, proto=None):
f = io.BytesIO()
p = self.pickler(f, proto)
p.dump(arg)
f.seek(0)
return bytes(f.read())
def loads(self, buf, **kwds):
f = io.BytesIO(buf)
u = self.unpickler(f, **kwds)
return u.load()
class InMemoryPickleTests(AbstractPickleTests, BigmemPickleTests):
pickler = pickle._Pickler
unpickler = pickle._Unpickler
def dumps(self, arg, protocol=None):
return pickle.dumps(arg, protocol)
def loads(self, buf, **kwds):
return pickle.loads(buf, **kwds)
class PyPersPicklerTests(AbstractPersistentPicklerTests):
pickler = pickle._Pickler
unpickler = pickle._Unpickler
def dumps(self, arg, proto=None):
class PersPickler(self.pickler):
def persistent_id(subself, obj):
return self.persistent_id(obj)
f = io.BytesIO()
p = PersPickler(f, proto)
p.dump(arg)
f.seek(0)
return f.read()
def loads(self, buf, **kwds):
class PersUnpickler(self.unpickler):
def persistent_load(subself, obj):
return self.persistent_load(obj)
f = io.BytesIO(buf)
u = PersUnpickler(f, **kwds)
return u.load()
class PyPicklerUnpicklerObjectTests(AbstractPicklerUnpicklerObjectTests):
pickler_class = pickle._Pickler
unpickler_class = pickle._Unpickler
class PyDispatchTableTests(AbstractDispatchTableTests):
pickler_class = pickle._Pickler
def get_dispatch_table(self):
return pickle.dispatch_table.copy()
class PyChainDispatchTableTests(AbstractDispatchTableTests):
pickler_class = pickle._Pickler
def get_dispatch_table(self):
return collections.ChainMap({}, pickle.dispatch_table)
if has_c_implementation:
class CPicklerTests(PyPicklerTests):
pickler = _pickle.Pickler
unpickler = _pickle.Unpickler
class CPersPicklerTests(PyPersPicklerTests):
pickler = _pickle.Pickler
unpickler = _pickle.Unpickler
class CDumpPickle_LoadPickle(PyPicklerTests):
pickler = _pickle.Pickler
unpickler = pickle._Unpickler
class DumpPickle_CLoadPickle(PyPicklerTests):
pickler = pickle._Pickler
unpickler = _pickle.Unpickler
class CPicklerUnpicklerObjectTests(AbstractPicklerUnpicklerObjectTests):
pickler_class = _pickle.Pickler
unpickler_class = _pickle.Unpickler
def test_issue18339(self):
unpickler = self.unpickler_class(io.BytesIO())
with self.assertRaises(TypeError):
unpickler.memo = object
# used to cause a segfault
with self.assertRaises(ValueError):
unpickler.memo = {-1: None}
unpickler.memo = {1: None}
class CDispatchTableTests(AbstractDispatchTableTests):
pickler_class = pickle.Pickler
def get_dispatch_table(self):
return pickle.dispatch_table.copy()
class CChainDispatchTableTests(AbstractDispatchTableTests):
pickler_class = pickle.Pickler
def get_dispatch_table(self):
return collections.ChainMap({}, pickle.dispatch_table)
def test_main():
tests = [PickleTests, PyPicklerTests, PyPersPicklerTests,
PyDispatchTableTests, PyChainDispatchTableTests]
if has_c_implementation:
tests.extend([CPicklerTests, CPersPicklerTests,
CDumpPickle_LoadPickle, DumpPickle_CLoadPickle,
PyPicklerUnpicklerObjectTests,
CPicklerUnpicklerObjectTests,
CDispatchTableTests, CChainDispatchTableTests,
InMemoryPickleTests])
support.run_unittest(*tests)
support.run_doctest(pickle)
if __name__ == "__main__":
test_main()
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