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swh/model/tests/test_collections.py
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| # Copyright (C) 2020 The Software Heritage developers | |||||
| # See the AUTHORS file at the top-level directory of this distribution | |||||
| # License: GNU General Public License version 3, or any later version | |||||
| # See top-level LICENSE file for more information | |||||
| import pytest | |||||
| from swh.model.collections import ImmutableDict | |||||
| def test_immutabledict_empty(): | |||||
| d = ImmutableDict() | |||||
| assert d == {} | |||||
| assert d != {"foo": "bar"} | |||||
| assert list(d) == [] | |||||
| assert list(d.items()) == [] | |||||
| def test_immutabledict_one_item(): | |||||
| d = ImmutableDict({"foo": "bar"}) | |||||
| assert d == {"foo": "bar"} | |||||
| assert d != {} | |||||
| assert d["foo"] == "bar" | |||||
| with pytest.raises(KeyError, match="bar"): | |||||
| d["bar"] | |||||
| assert list(d) == ["foo"] | |||||
| assert list(d.items()) == [("foo", "bar")] | |||||
| def test_immutabledict_immutable(): | |||||
| d = ImmutableDict({"foo": "bar"}) | |||||
| with pytest.raises(TypeError, match="item assignment"): | |||||
| d["bar"] = "baz" | |||||
| with pytest.raises(TypeError, match="item deletion"): | |||||
| del d["foo"] | |||||
| def test_immutabledict_copy_pop(): | |||||
| d = ImmutableDict({"foo": "bar", "baz": "qux"}) | |||||
| assert d.copy_pop("foo") == ("bar", ImmutableDict({"baz": "qux"})) | |||||
| assert d.copy_pop("not a key") == (None, d) | |||||