PT006 breaks test by removing tuple from parametrize

[Pebin]

PT006 breaks test, removes tuple just from argnames but not from argvalues

@pytest.mark.parametrize(("thresholds",), [([0.6, 0.3],), ([],)])

is replaced as

@pytest.mark.parametrize("thresholds", [([0.6, 0.3],), ([],)])

so now thresholds contains tuple of list. Shouldn't the fix remove also the brackets inside so the result would be:

@pytest.mark.parametrize("thresholds", [[0.6, 0.3], []])

command:
ruff tests/test.py --fix

ruff 0.4.2, no special settings needed, python 3.9

[jhbuhrman]

This is a serious breakage; ruff --fix introduces an error.

The --fix option should also "fix" (i.e. de-tuple) the parameter value if it de-tuples the argnames parameter in case of a single parameter.

Apart from that, I find the obligatory (non-configurable) special case of tuple/list-less argnames in case of a single parameter quite questionable (if you later on would like to extend your test case with an additional parameter, you suddenly have to tuplify everything). I would prefer yet another configuration item that controls this quite opiniated preference for single parameter cases.