from buddhagpt.index import chunk_text


def test_chunk_text_respects_max_words():
    text = " ".join(f"w{i}" for i in range(700))
    chunks = chunk_text(text, max_words=300, overlap=50)
    assert all(len(c.split()) <= 300 for c in chunks)
    assert len(chunks) == 3


def test_chunks_overlap():
    text = " ".join(f"w{i}" for i in range(400))
    a, b = chunk_text(text, max_words=300, overlap=50)
    assert a.split()[-50:] == b.split()[:50]