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import cPickle
import cStringIO
import io
import unittest
from test.pickletester import (AbstractPickleTests,
AbstractPickleModuleTests,
AbstractPicklerUnpicklerObjectTests,
BigmemPickleTests)
from test import test_support
class cStringIOMixin:
output = input = cStringIO.StringIO
def close(self, f):
pass
class BytesIOMixin:
output = input = io.BytesIO
def close(self, f):
pass
class FileIOMixin:
def output(self):
return open(test_support.TESTFN, 'wb+')
def input(self, data):
f = open(test_support.TESTFN, 'wb+')
try:
f.write(data)
f.seek(0)
return f
except:
f.close()
raise
def close(self, f):
f.close()
test_support.unlink(test_support.TESTFN)
class cPickleTests(AbstractPickleTests, AbstractPickleModuleTests):
def setUp(self):
self.dumps = cPickle.dumps
self.loads = cPickle.loads
error = cPickle.BadPickleGet
module = cPickle
class cPicklePicklerTests(AbstractPickleTests):
def dumps(self, arg, proto=0):
f = self.output()
try:
p = cPickle.Pickler(f, proto)
p.dump(arg)
f.seek(0)
return f.read()
finally:
self.close(f)
def loads(self, buf):
f = self.input(buf)
try:
p = cPickle.Unpickler(f)
return p.load()
finally:
self.close(f)
error = cPickle.BadPickleGet
class cStringIOCPicklerTests(cStringIOMixin, cPicklePicklerTests):
pass
class BytesIOCPicklerTests(BytesIOMixin, cPicklePicklerTests):
pass
class FileIOCPicklerTests(FileIOMixin, cPicklePicklerTests):
pass
class cPickleListPicklerTests(AbstractPickleTests):
def dumps(self, arg, proto=0):
p = cPickle.Pickler(proto)
p.dump(arg)
return p.getvalue()
def loads(self, *args):
f = self.input(args[0])
try:
p = cPickle.Unpickler(f)
return p.load()
finally:
self.close(f)
error = cPickle.BadPickleGet
class cStringIOCPicklerListTests(cStringIOMixin, cPickleListPicklerTests):
pass
class BytesIOCPicklerListTests(BytesIOMixin, cPickleListPicklerTests):
pass
class FileIOCPicklerListTests(FileIOMixin, cPickleListPicklerTests):
pass
class cPickleFastPicklerTests(AbstractPickleTests):
def dumps(self, arg, proto=0):
f = self.output()
try:
p = cPickle.Pickler(f, proto)
p.fast = 1
p.dump(arg)
f.seek(0)
return f.read()
finally:
self.close(f)
def loads(self, *args):
f = self.input(args[0])
try:
p = cPickle.Unpickler(f)
return p.load()
finally:
self.close(f)
error = cPickle.BadPickleGet
def test_recursive_list(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_list,
self)
def test_recursive_tuple(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_tuple,
self)
def test_recursive_inst(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_inst,
self)
def test_recursive_dict(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_dict,
self)
def test_recursive_multi(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_multi,
self)
def test_nonrecursive_deep(self):
# If it's not cyclic, it should pickle OK even if the nesting
# depth exceeds PY_CPICKLE_FAST_LIMIT. That happens to be
# 50 today. Jack Jansen reported stack overflow on Mac OS 9
# at 64.
a = []
for i in range(60):
a = [a]
b = self.loads(self.dumps(a))
self.assertEqual(a, b)
class cStringIOCPicklerFastTests(cStringIOMixin, cPickleFastPicklerTests):
pass
class BytesIOCPicklerFastTests(BytesIOMixin, cPickleFastPicklerTests):
pass
class FileIOCPicklerFastTests(FileIOMixin, cPickleFastPicklerTests):
pass
class cPicklePicklerUnpicklerObjectTests(AbstractPicklerUnpicklerObjectTests):
pickler_class = cPickle.Pickler
unpickler_class = cPickle.Unpickler
class cPickleBigmemPickleTests(BigmemPickleTests):
def dumps(self, arg, proto=0, fast=0):
# Ignore fast
return cPickle.dumps(arg, proto)
def loads(self, buf):
# Ignore fast
return cPickle.loads(buf)
class Node(object):
pass
class cPickleDeepRecursive(unittest.TestCase):
def test_issue2702(self):
# This should raise a RecursionLimit but in some
# platforms (FreeBSD, win32) sometimes raises KeyError instead,
# or just silently terminates the interpreter (=crashes).
nodes = [Node() for i in range(500)]
for n in nodes:
n.connections = list(nodes)
n.connections.remove(n)
self.assertRaises((AttributeError, RuntimeError), cPickle.dumps, n)
def test_issue3179(self):
# Safe test, because I broke this case when fixing the
# behaviour for the previous test.
res=[]
for x in range(1,2000):
res.append(dict(doc=x, similar=[]))
cPickle.dumps(res)
def test_main():
test_support.run_unittest(
cPickleTests,
cStringIOCPicklerTests,
BytesIOCPicklerTests,
FileIOCPicklerTests,
cStringIOCPicklerListTests,
BytesIOCPicklerListTests,
FileIOCPicklerListTests,
cStringIOCPicklerFastTests,
BytesIOCPicklerFastTests,
FileIOCPicklerFastTests,
cPickleDeepRecursive,
cPicklePicklerUnpicklerObjectTests,
cPickleBigmemPickleTests,
)
if __name__ == "__main__":
test_main()
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