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Chunking modülü testleri.
Çalıştırma: python tests/test_chunking.py
"""
import sys
import os
sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
from src.chunking import chunk_text, chunk_articles, _WhitespaceTokenizer
def test_chunk_respects_size_and_overlap():
tok = _WhitespaceTokenizer()
text = " ".join([f"kelime{i}" for i in range(100)]) # 100 "token"
chunks = chunk_text(text, chunk_size=30, overlap=10, tokenizer=tok)
# Beklenen chunk sayısı: step=20, (100-30)/20 + 1 = 4.5 -> 5 chunk (üste yuvarlanır)
assert len(chunks) >= 4, f"Beklenenden az chunk: {len(chunks)}"
# İlk chunk'ın son 10 kelimesi, ikinci chunk'ın ilk 10 kelimesiyle örtüşmeli
first_words = chunks[0].split()
second_words = chunks[1].split()
assert first_words[-10:] == second_words[:10], "Overlap doğru uygulanmamış"
print("test_chunk_respects_size_and_overlap: OK")
def test_chunk_short_text_single_chunk():
tok = _WhitespaceTokenizer()
text = "kısa bir metin"
chunks = chunk_text(text, chunk_size=100, overlap=10, tokenizer=tok)
assert len(chunks) == 1
assert chunks[0] == text
print("test_chunk_short_text_single_chunk: OK")
def test_chunk_articles_preserves_metadata():
articles = [
{"url": "u1", "title": "t1", "__source": "s1", "text": "a b c d e f g h i j k l m n o"},
{"url": "u2", "title": "t2", "__source": "s2", "text": "x y z"},
]
chunks = chunk_articles(articles, chunk_size=5, overlap=2)
assert all("url" in c and "chunk_text" in c and "chunk_id" in c for c in chunks)
# parent_id doğru dağıtılmış mı?
parent_ids = {c["parent_id"] for c in chunks}
assert parent_ids == {0, 1}
print("test_chunk_articles_preserves_metadata: OK")
def test_overlap_must_be_smaller_than_chunk_size():
tok = _WhitespaceTokenizer()
try:
chunk_text("bir iki üç", chunk_size=5, overlap=5, tokenizer=tok)
assert False, "ValueError bekleniyordu"
except ValueError:
pass
print("test_overlap_must_be_smaller_than_chunk_size: OK")
if __name__ == "__main__":
test_chunk_respects_size_and_overlap()
test_chunk_short_text_single_chunk()
test_chunk_articles_preserves_metadata()
test_overlap_must_be_smaller_than_chunk_size()
print("\nTüm testler geçti ✅")
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