"""Guard the committed generated dialect against submodule drift."""

import unittest

from tools import gen_dialect
from tools.gen_dialect import INCLUDES, SOURCE


class DialectSyncTests(unittest.TestCase):
    def test_xml_sources_are_present(self):
        missing = [
            str(path)
            for path in (SOURCE, *(SOURCE.parent / name for name in INCLUDES))
            if not path.is_file()
        ]
        self.assertEqual(
            missing,
            [],
            "run `git submodule update --init --recursive` before testing",
        )

    def test_generated_dialect_is_up_to_date(self):
        if not gen_dialect.OUTPUT.is_file():
            self.fail(f"{gen_dialect.OUTPUT} is missing; run: python tools/gen_dialect.py")
        updated = gen_dialect.generate(dry_run=True, no_validate=True)
        self.assertFalse(
            updated,
            "motian_bridge/dialects/v20/VKFly.py is stale; regenerate with "
            "`.venv/bin/python tools/gen_dialect.py`",
        )


if __name__ == "__main__":
    unittest.main()