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LoreMind/brain/tests/test_rerank.py
IETM_FIXE\ietm6 4d049274f9
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Refacto du code coté Python, java et coté angular afin de mieux séparer les responsabilité et d'avoir moins de répétitivité dans le code.
Mise en place de tests unitaires coté Python et Angular
Mise en place de la couverture de test directement dans le workflow : le programme ne build pas si jamais un test échoue
Passage en v0.16.2 en conséquence
2026-06-18 15:59:10 +02:00

61 lines
2.3 KiB
Python

"""Tests du reranking LLM des passages RAG (app.application.rerank)."""
from __future__ import annotations
from app.application.rerank import pool_size, rerank
class FakeLLM:
def __init__(self, response: str | None = None, exc: Exception | None = None) -> None:
self.response = response
self.exc = exc
async def generate(self, prompt, *, temperature=None, output_format=None) -> str:
if self.exc:
raise self.exc
return self.response
def test_pool_size():
assert pool_size(8) == 24 # min(max(24, 8), 24)
assert pool_size(4) == 12 # 4 * 3
assert pool_size(10) == 24 # plafonné à POOL_MAX
assert pool_size(1) == 3
async def test_rerank_skips_when_pool_not_larger_than_top_k():
passages = [{"text": "a"}, {"text": "b"}]
# len <= top_k → renvoyé tel quel, sans appel LLM.
assert await rerank(FakeLLM(exc=AssertionError("ne doit pas être appelé")),
"q", passages, top_k=3) == passages
async def test_rerank_reorders_by_llm_scores():
passages = [{"text": "a"}, {"text": "b"}, {"text": "c"}]
out = await rerank(FakeLLM(response='{"scores":[1, 9, 5]}'), "q", passages, top_k=2)
assert [p["text"] for p in out] == ["b", "c"]
async def test_rerank_stable_on_score_ties():
passages = [{"text": "a"}, {"text": "b"}, {"text": "c"}]
# Notes égales → ordre cosinus d'origine préservé.
out = await rerank(FakeLLM(response='{"scores":[5, 5, 5]}'), "q", passages, top_k=2)
assert [p["text"] for p in out] == ["a", "b"]
async def test_rerank_llm_failure_falls_back_to_cosine_order():
passages = [{"text": "a"}, {"text": "b"}, {"text": "c"}]
out = await rerank(FakeLLM(exc=RuntimeError("LLM HS")), "q", passages, top_k=2)
assert [p["text"] for p in out] == ["a", "b"]
async def test_rerank_wrong_score_count_falls_back():
passages = [{"text": "a"}, {"text": "b"}, {"text": "c"}]
out = await rerank(FakeLLM(response='{"scores":[1, 2]}'), "q", passages, top_k=2)
assert [p["text"] for p in out] == ["a", "b"]
async def test_rerank_non_numeric_scores_fall_back():
passages = [{"text": "a"}, {"text": "b"}, {"text": "c"}]
out = await rerank(FakeLLM(response='{"scores":["x","y","z"]}'), "q", passages, top_k=2)
assert [p["text"] for p in out] == ["a", "b"]