`test_macos` fails on `check_keylayout("q-ansi")`

[nojhan]

After having disabled mypy (because of issue #221), I get the following error:

$ poetry run make
ruff format kalamine
16 files left unchanged
ruff check --fix kalamine
All checks passed!
ruff format --check kalamine
16 files already formatted
ruff check kalamine
All checks passed!
# mypy kalamine
python3 -m kalamine.cli guide > docs/README.md
python3 -m kalamine.cli build layouts/*.toml
... dist/q-ansi.ahk
`us` is not a valid locale
... dist/q-ansi.klc
... dist/q-ansi.keylayout
... dist/q-ansi.xkb_keymap
... dist/q-ansi.xkb_symbols
... dist/q-ansi.json
... dist/q-ansi.svg
... dist/q-intl.ahk
`us` is not a valid locale
... dist/q-intl.klc
... dist/q-intl.keylayout
... dist/q-intl.xkb_keymap
... dist/q-intl.xkb_symbols
... dist/q-intl.json
... dist/q-intl.svg
... dist/q-prog.ahk
`us` is not a valid locale
... dist/q-prog.klc
... dist/q-prog.keylayout
... dist/q-prog.xkb_keymap
... dist/q-prog.xkb_symbols
... dist/q-prog.json
... dist/q-prog.svg
python3 -m pytest
======================================= test session starts =======================================
platform darwin -- Python 3.10.9, pytest-8.4.1, pluggy-1.6.0
rootdir: /Users/nojhan/code/kalamine
configfile: pyproject.toml
collected 19 items                                                                                

tests/test_macos.py F                                                                       [  5%]
tests/test_parser.py ...                                                                    [ 21%]
tests/test_serializer_ahk.py ...                                                            [ 36%]
tests/test_serializer_keylayout.py ...                                                      [ 52%]
tests/test_serializer_klc.py ......                                                         [ 84%]
tests/test_serializer_xkb.py ...                                                            [100%]

============================================ FAILURES =============================================
_________________________________________ test_keylayouts _________________________________________

    def test_keylayouts():
>       check_keylayout("q-ansi")

tests/test_macos.py:82: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

filename = 'q-ansi'

    def check_keylayout(filename: str):
        path = Path(__file__).parent.parent / f"dist/{filename}.keylayout"
        tree = etree.parse(path, etree.XMLParser(recover=True))
        dead_keys = []
    
        # check all keymaps/layers: base, shift, caps, option, option+shift
        for keymap_index in range(5):
            keymap_query = f'//keyMap[@index="{keymap_index}"]'
            keymap = tree.xpath(keymap_query)
            assert len(keymap) == 1, f"{keymap_query} should be unique"
    
            # check all key codes for this keymap / layer
            # (the key codes below are not used, I don't know why)
            excluded_keys = [
                54,
                55,
                56,
                57,
                58,
                59,
                60,
                61,
                62,
                63,
                68,
                73,
                74,
                90,
                93,
                94,
                95,
            ]
            for key_index in range(126):
                if key_index in excluded_keys:
                    continue
    
                # ensure the key is defined and unique
                key_query = f'{keymap_query}/key[@code="{key_index}"]'
                key = tree.xpath(key_query)
                assert len(key) == 1, f"{key_query} should be unique"
    
                # ensure the key has either a direct output or a valid action
                action_id = key[0].get("action")
                if action_id:
                    if action_id.startswith("dead_"):
                        dead_keys.append(action_id[5:])
                    action_query = f'//actions/action[@id="{action_id}"]'
                    action = tree.xpath(action_query)
                    assert len(action) == 1, f"{action_query} should be unique"
                    assert (
                        len(action_id) > 1
                    ), f"{key_query} should have a multi-char action ID"
                else:
                    assert (
>                       len(key[0].get("output")) <= 1
                    ), f"{key_query} should have a one-char output"
E                   TypeError: object of type 'NoneType' has no len()

tests/test_macos.py:60: TypeError
===================================== short test summary info =====================================
FAILED tests/test_macos.py::test_keylayouts - TypeError: object of type 'NoneType' has no len()
================================== 1 failed, 18 passed in 1.79s ===================================
make: *** [test] Error 1