def test_local_proxies_with_callables():
foo = 42
ls = Proxy(lambda: foo)
assert ls == 42
foo = [23]
ls.append(42)
assert ls == [23, 42]
assert foo == [23, 42]
def test_local_proxy_operations_list():
foo = []
ls = Proxy(lambda: foo)
ls.append(42)
ls.append(23)
ls[1:] = [1, 2, 3]
assert foo == [42, 1, 2, 3]
assert repr(foo) == repr(ls)
assert foo[0] == 42
foo += [1]
assert list(foo) == [42, 1, 2, 3, 1]
del ls[0]
assert list(foo) == [1, 2, 3, 1]
assert len(ls) == 4
assert list(iter(ls)) == [1, 2, 3, 1]
assert 1 in ls