def test_id_dict_generate_id():
d = IdDict()
d.add("a")
assert len(d) == 1
assert "a" in d.values()
d.add("a")
assert len(d) == 2
def test_id_dict_behave_like_normal_dict():
d = IdDict()
d[10] = None
assert d[10] is None
assert d.pop(10) is None
assert_raises(KeyError, lambda: d.pop(10))
assert d.pop(10, None) is None
assert len(d) == 0
d[1] = "a"
d[1] = "b"
assert d.popitem() == (1, "b")
d[2] = 1
assert 10 not in d
assert 2 in d
assert d.get(10, "a") == "a"
assert d.get(2, None) == 1
assert len(d) == 1
assert tuple(d.keys()) == (2,)
assert tuple(d.values()) == (1,)
assert tuple(d.items()) == ((2, 1),)
tmp = {1: 2, 3: "c"}
d = IdDict(tmp)
assert len(d) == 2
# TODO update not implemented
# d[1] = 3
# tmp[5] = 'd'
# d.update(tmp)
# assert len(d) == 3
# assert d[1] == 2
d.clear()
assert len(d) == 0
d = IdDict(tmp)
del d[1]
assert 1 not in d
d.setdefault(10, []).append(10)
assert 10 in d[10]
d[23] = [1, 2]
dd = d.copy()
assert id(dd) != id(d)
assert tuple(dd.items()) == tuple(d.items())
d[23][0] = 10
assert dd[23][0] == 10
dd = deepcopy(d)
assert id(dd) != id(d)
assert tuple(dd.items()) == tuple(d.items())
d[23][0] = 100
assert dd[23][0] != 100