Summary

Closes #14234

The ids keyword argument of pytest.mark.parametrize did not allow pytest.HIDDEN_PARAM, unlike pytest.mark.param(id=...).

Problem

The following produced a typing error:

import pytest

@pytest.mark.parametrize(
    "x",
    [1, 2, 3],
    ids=[pytest.HIDDEN_PARAM, "two", "three"],
)
def test_example(x: int) -> None:
    pass

Solution

Modified _ParametrizeMarkDecorator.__call__()'s ids argument to include the _HiddenParam enum.

Test Cases

Type check for passing pytest.HIDDEN_PARAM in the ids argument for pytest.mark.parametrize

@pytest.mark.parametrize("x", [1, 2], ids=[pytest.HIDDEN_PARAM, "visible"])
def test_hidden_param(x: int) -> None:
    pass