from uuid import UUID import pytest from pytest_mock import MockerFixture @pytest.fixture() def deterministic_uuids(mocker: MockerFixture) -> MockerFixture: side_effect = ( UUID(f"00000000-0000-4000-8000-{i:012}", version=4) for i in range(10000) ) return mocker.patch("uuid.uuid4", side_effect=side_effect) pytest.register_assert_rewrite("tests.memory_assert")