test_deepcopy.py

from gitpod._utils import deepcopy_minimal


def assert_different_identities(obj1: object, obj2: object) -> None:
    assert obj1 == obj2
    assert id(obj1) != id(obj2)


def test_simple_dict() -> None:
    obj1 = {"foo": "bar"}
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)


def test_nested_dict() -> None:
    obj1 = {"foo": {"bar": True}}
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)
    assert_different_identities(obj1["foo"], obj2["foo"])


def test_complex_nested_dict() -> None:
    obj1 = {"foo": {"bar": [{"hello": "world"}]}}
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)
    assert_different_identities(obj1["foo"], obj2["foo"])
    assert_different_identities(obj1["foo"]["bar"], obj2["foo"]["bar"])
    assert_different_identities(obj1["foo"]["bar"][0], obj2["foo"]["bar"][0])


def test_simple_list() -> None:
    obj1 = ["a", "b", "c"]
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)


def test_nested_list() -> None:
    obj1 = ["a", [1, 2, 3]]
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)
    assert_different_identities(obj1[1], obj2[1])


class MyObject: ...


def test_ignores_other_types() -> None:
    # custom classes
    my_obj = MyObject()
    obj1 = {"foo": my_obj}
    obj2 = deepcopy_minimal(obj1)
    assert_different_identities(obj1, obj2)
    assert obj1["foo"] is my_obj

    # tuples
    obj3 = ("a", "b")
    obj4 = deepcopy_minimal(obj3)
    assert obj3 is obj4