class InstanceDelegateTest(unittest.TestCase):
# W0201 (variable declared outside __init__)
# C0103 (invalid name for method): camel case "setUp" is a special name
# pylint: disable=W0201,C0103
def setUp(self):
self.value = TestClass(TestClass(None, 20), 10)
self.resolver = StaticResolver(self.value)
self.delegate = ResolvingDelegate(self.resolver)
self.proxy = Proxy(self.delegate)
def test_special(self):
self.assertIs(Proxy.delegate(self.proxy), self.delegate)
self.assertIsNot(self.proxy, self.value)
def test_attribute_get(self):
self.assertEqual(self.proxy.parent, self.value.parent)
self.assertEqual(self.proxy.method, self.value.method)
# W0212 (access to protected member): needed for test
# pylint: disable=W0212
self.assertEqual(self.proxy._var, self.value._var)
def test_call(self):
self.assertEqual(self.proxy.parent(), self.value.parent())
self.assertEqual(self.proxy.method(), self.value.method())
def test_equality(self):
self.assertEqual(self.proxy, self.value)
def test_hash(self):
self.assertEqual(hash(self.proxy), hash(self.value))
def test_casts(self):
self.assertEqual(str(self.proxy), str(self.value))
self.assertEqual(bool(self.proxy), bool(self.value))
self.assertEqual(int(self.proxy), int(self.value))
self.assertEqual(float(self.proxy), float(self.value))
self.assertEqual(complex(self.proxy), complex(self.value))
def test_repr(self):
self.assertNotEqual(repr(self.proxy), repr(self.value))
def test_static_method_collision(self):
parameter = 10
self.assertEqual(self.proxy.for_instance(parameter), self.value.for_instance(parameter))
def test_descriptor(self):
delegate = TestDescriptorDelegate()
class DescriptedClass(object):
descriptor = Proxy(delegate)
instance = DescriptedClass()
value = instance.descriptor
self.assertEqual(value, instance)
def test_special(self):
self.assertIs(Proxy.delegate(self.proxy), self.delegate)
self.assertIsNot(self.proxy, self.value)
def setUp(self):
self.value = TestClass(TestClass(None, 20), 10)
self.resolver = StaticResolver(self.value)
self.delegate = ResolvingDelegate(self.resolver)
self.proxy = Proxy(self.delegate)
