Function test_pytest_param_id_requires_string

testing/test_mark.py:1104–1108

()

def test_pytest_param_id_requires_string() -> None:
    with pytest.raises(TypeError) as excinfo:
        pytest.param(id=True)  # type: ignore[arg-type]
    (msg,) = excinfo.value.args
    assert msg == "Expected id to be a string, got <class 'bool'>: True"


@pytest.mark.parametrize("s", (None, "hello world"))