"""Phase 13 site 2: _chunk_code Result migration.

Site 2 (BC at L224): the AST-aware chunking has a fallback to text chunking
on any failure:
    try:
        parser = ASTParser('python')
        tree = parser.parse(content)
        ...
        return chunks
    except Exception:
        return self._chunk_text(content)

Body: broad catch + fallback to a different implementation. Per Phase 11
anti-sliming, this is an empty-default fallback. Migrate to Result.
"""
import sys
sys.path.insert(0, ".")


def test_phase13_site2_chunk_code_result_exists():
    import src.rag_engine
    assert hasattr(src.rag_engine.RAGEngine, "_chunk_code_result") or \
           hasattr(src.rag_engine, "_chunk_code_result"), \
        "_chunk_code_result helper missing"


def test_phase13_site2_chunk_code_legacy_obliterated():
    """_chunk_code wrapper OBLITERATED by cruft-removal Phase 5."""
    import src.rag_engine
    assert not hasattr(src.rag_engine.RAGEngine, "_chunk_code"), (
        "_chunk_code wrapper must be DELETED; "
        "callers must use _chunk_code_result(...).ok directly."
    )