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127 lines
4.4 KiB
127 lines
4.4 KiB
3 years ago
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import copyreg
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import unittest
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from test.pickletester import ExtensionSaver
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class C:
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pass
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class WithoutSlots(object):
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pass
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class WithWeakref(object):
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__slots__ = ('__weakref__',)
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class WithPrivate(object):
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__slots__ = ('__spam',)
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class _WithLeadingUnderscoreAndPrivate(object):
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__slots__ = ('__spam',)
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class ___(object):
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__slots__ = ('__spam',)
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class WithSingleString(object):
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__slots__ = 'spam'
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class WithInherited(WithSingleString):
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__slots__ = ('eggs',)
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class CopyRegTestCase(unittest.TestCase):
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def test_class(self):
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self.assertRaises(TypeError, copyreg.pickle,
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C, None, None)
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def test_noncallable_reduce(self):
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self.assertRaises(TypeError, copyreg.pickle,
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type(1), "not a callable")
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def test_noncallable_constructor(self):
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self.assertRaises(TypeError, copyreg.pickle,
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type(1), int, "not a callable")
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def test_bool(self):
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import copy
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self.assertEqual(True, copy.copy(True))
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def test_extension_registry(self):
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mod, func, code = 'junk1 ', ' junk2', 0xabcd
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e = ExtensionSaver(code)
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try:
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# Shouldn't be in registry now.
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self.assertRaises(ValueError, copyreg.remove_extension,
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mod, func, code)
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copyreg.add_extension(mod, func, code)
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# Should be in the registry.
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self.assertTrue(copyreg._extension_registry[mod, func] == code)
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self.assertTrue(copyreg._inverted_registry[code] == (mod, func))
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# Shouldn't be in the cache.
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self.assertNotIn(code, copyreg._extension_cache)
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# Redundant registration should be OK.
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copyreg.add_extension(mod, func, code) # shouldn't blow up
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# Conflicting code.
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self.assertRaises(ValueError, copyreg.add_extension,
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mod, func, code + 1)
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self.assertRaises(ValueError, copyreg.remove_extension,
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mod, func, code + 1)
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# Conflicting module name.
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self.assertRaises(ValueError, copyreg.add_extension,
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mod[1:], func, code )
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self.assertRaises(ValueError, copyreg.remove_extension,
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mod[1:], func, code )
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# Conflicting function name.
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self.assertRaises(ValueError, copyreg.add_extension,
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mod, func[1:], code)
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self.assertRaises(ValueError, copyreg.remove_extension,
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mod, func[1:], code)
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# Can't remove one that isn't registered at all.
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if code + 1 not in copyreg._inverted_registry:
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self.assertRaises(ValueError, copyreg.remove_extension,
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mod[1:], func[1:], code + 1)
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finally:
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e.restore()
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# Shouldn't be there anymore.
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self.assertNotIn((mod, func), copyreg._extension_registry)
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# The code *may* be in copyreg._extension_registry, though, if
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# we happened to pick on a registered code. So don't check for
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# that.
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# Check valid codes at the limits.
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for code in 1, 0x7fffffff:
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e = ExtensionSaver(code)
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try:
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copyreg.add_extension(mod, func, code)
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copyreg.remove_extension(mod, func, code)
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finally:
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e.restore()
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# Ensure invalid codes blow up.
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for code in -1, 0, 0x80000000:
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self.assertRaises(ValueError, copyreg.add_extension,
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mod, func, code)
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def test_slotnames(self):
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self.assertEqual(copyreg._slotnames(WithoutSlots), [])
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self.assertEqual(copyreg._slotnames(WithWeakref), [])
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expected = ['_WithPrivate__spam']
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self.assertEqual(copyreg._slotnames(WithPrivate), expected)
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expected = ['_WithLeadingUnderscoreAndPrivate__spam']
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self.assertEqual(copyreg._slotnames(_WithLeadingUnderscoreAndPrivate),
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expected)
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self.assertEqual(copyreg._slotnames(___), ['__spam'])
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self.assertEqual(copyreg._slotnames(WithSingleString), ['spam'])
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expected = ['eggs', 'spam']
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expected.sort()
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result = copyreg._slotnames(WithInherited)
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result.sort()
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self.assertEqual(result, expected)
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if __name__ == "__main__":
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unittest.main()
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