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import copy
import unittest
import wrapt
class CustomObjectProxy(wrapt.ObjectProxy):
def __copy__(self):
return CustomObjectProxy(copy.copy(self.__wrapped__))
def __deepcopy__(self, memo):
return CustomObjectProxy(copy.deepcopy(self.__wrapped__, memo))
class TestObjectCopy(unittest.TestCase):
def test_copy(self):
proxy1 = wrapt.ObjectProxy([1])
with self.assertRaises(NotImplementedError) as context:
proxy2 = copy.copy(proxy1)
self.assertTrue(str(context.exception) == "object proxy must define __copy__()")
def test_deepcopy(self):
proxy1 = wrapt.ObjectProxy([1])
with self.assertRaises(NotImplementedError) as context:
proxy2 = copy.deepcopy(proxy1)
self.assertTrue(
str(context.exception) == "object proxy must define __deepcopy__()"
)
def test_copy_proxy(self):
proxy1 = CustomObjectProxy([1])
proxy2 = copy.copy(proxy1)
# self.assertTrue(type(proxy1) == type(proxy2))
self.assertTrue(isinstance(proxy2, CustomObjectProxy))
self.assertEqual(proxy1, proxy2)
self.assertEqual(proxy1.__wrapped__, proxy2.__wrapped__)
def test_deepcopy_proxy(self):
proxy1 = CustomObjectProxy([1])
proxy2 = copy.deepcopy(proxy1)
# self.assertTrue(type(proxy1) == type(proxy2))
self.assertTrue(isinstance(proxy2, CustomObjectProxy))
self.assertEqual(proxy1, proxy2)
self.assertEqual(proxy1.__wrapped__, proxy2.__wrapped__)
if __name__ == "__main__":
unittest.main()
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