def test_persistent_types_buglets(self):
l = PersistentList([1, 2, 3])
self.assertTrue(isinstance(l, PersistentList))
self.assertFalse(isinstance(l, list)) # dangerous
self.assertTrue(isinstance(l[:], PersistentList))
d = PersistentMapping({1: 2})
self.assertTrue(isinstance(d, PersistentMapping))
self.assertFalse(isinstance(d, dict)) # dangerous
self.assertTrue(isinstance(d.copy(), PersistentMapping))
def test_mapping_copy(self):
a = PersistentMapping(dict(a=3, b=5))
b = a.copy()
c = copy.copy(a)
assert a == b
assert a == c
assert a is not b
assert a is not c
assert b is not c
del a["a"]
assert b["a"] # NOT impacted
assert c["a"] # NOT impacted
def test_mapping_copy(self):
a = PersistentMapping(dict(a=3, b=5))
b = a.copy()
c = copy.copy(a)
d = copy.deepcopy(a)
assert a == b
assert a == c
assert a == d
assert a is not b
assert a is not c
assert b is not c
assert a is not d
del a["a"]
assert b["a"] # NOT impacted
assert "a" in c # NOT impacted
assert d["a"] # NOT impacted
