def test_attr_target(self):
o = Object()
o.id = id(o)
p = OP()
with self.assertRaises(AttributeError):
p.__target__
p.__target__ = o
self.assertEqual(o, p.__target__)
self.assertEqual(o.id, p.id)
del p.__target__
with self.assertRaises(AttributeError):
p.__target__
with self.assertRaises(AttributeError):
self.assertEqual(None, p.id)
def test_attr(self):
o = Object()
o.attr = 1
p = OP(o)
self.assertEqual(1, p.attr)
o.attr = 2
self.assertEqual(2, p.attr)
self.assertEqual(2, o.attr)
p.attr = 3
self.assertEqual(3, p.attr)
self.assertEqual(3, o.attr)
del o.attr
with self.assertRaises(AttributeError):
p.attr
with self.assertRaises(AttributeError):
o.attr
p.attr = 1
self.assertEqual(1, p.attr)
self.assertEqual(1, o.attr)
del p.attr
with self.assertRaises(AttributeError):
p.attr
with self.assertRaises(AttributeError):
o.attr
