import unittest
from pathlib import Path

from hf_doc_translation.markdown import parse_markdown, parse_toc


FIXTURES = Path(__file__).parent / "fixtures"


class MarkdownTest(unittest.TestCase):
    def test_identity_render_is_byte_stable(self):
        source = (FIXTURES / "sample.md").read_text(encoding="utf-8")
        page = parse_markdown(Path("sample.md"), source, ["Transformers"])
        rendered = page.render({segment.key: segment.protected.text for segment in page.segments})
        self.assertEqual(rendered, source)
        self.assertIn("heading", {segment.kind for segment in page.segments})
        self.assertIn("table", {segment.kind for segment in page.segments})

    def test_toc_preserves_local_paths_and_translates_titles_only(self):
        source = (FIXTURES / "sample_toctree.yml").read_text(encoding="utf-8")
        toc = parse_toc(Path("_toctree.yml"), source)
        rendered = toc.render({segment.key: segment.protected.text for segment in toc.segments})
        self.assertEqual(rendered, source)
        self.assertEqual(toc.local_paths, ("sample",))


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