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Code Issues Projects Releases Packages Wiki Activity Actions 11

Support __reduce__ returning a 4-tuple or 5-tuple.

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This commit is contained in:
Guido van Rossum 2003-02-06 18:18:23 +00:00
parent 93cf58b015
commit 90e05b0e25
2 changed files with 56 additions and 1 deletions
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36
Lib/test/test_copy.py
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@ -375,6 +375,42 @@ class TestCopy(unittest.TestCase):
self.assertEqual(y, x)
self.assert_(y.foo is not x.foo)
# Additions for Python 2.3 and pickle protocol 2
def test_reduce_4tuple(self):
class C(list):
def __reduce__(self):
return (C, (), self.__dict__, iter(self))
def __cmp__(self, other):
return (cmp(list(self), list(other)) or
cmp(self.__dict__, other.__dict__))
x = C([[1, 2], 3])
y = copy.copy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x[0] is y[0])
y = copy.deepcopy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x[0] is not y[0])
def test_reduce_5tuple(self):
class C(dict):
def __reduce__(self):
return (C, (), self.__dict__, None, self.iteritems())
def __cmp__(self, other):
return (cmp(dict(self), list(dict)) or
cmp(self.__dict__, other.__dict__))
x = C([("foo", [1, 2]), ("bar", 3)])
y = copy.copy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x["foo"] is y["foo"])
y = copy.deepcopy(x)
self.assertEqual(x, y)
self.assert_(x is not y)
self.assert_(x["foo"] is not y["foo"])
def test_main():
suite = unittest.TestSuite()
suite.addTest(unittest.makeSuite(TestCopy))