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Properly test cohere reranker

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Yiorgis Gozadinos 2025-07-18 20:55:28 +03:00
parent 044e1b0a06
commit f25416b0ff
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2 changed files with 21 additions and 76 deletions
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2
src/haiku/rag/config.py
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@ -19,8 +19,6 @@ class AppConfig(BaseModel):
EMBEDDINGS_MODEL: str = "mxbai-embed-large"
EMBEDDINGS_VECTOR_DIM: int = 1024
# RERANK_PROVIDER: str = "cohere"
# RERANK_MODEL: str = "rerank-v3.5"
RERANK_MODEL: str = "mixedbread-ai/mxbai-rerank-base-v2"
RERANK_PROVIDER: str = "mxbai"

95
tests/test_reranker.py
View file

@ -1,10 +1,23 @@
import pytest
from haiku.rag.reranking import get_reranker
from haiku.rag.reranking.base import RerankerBase
from haiku.rag.reranking.mxbai import MxBAIReranker
from haiku.rag.store.models.chunk import Chunk
chunks = [
Chunk(content=content, document_id=i)
for i, content in enumerate(
[
"To Kill a Mockingbird is a novel by Harper Lee published in 1960. It was immediately successful, winning the Pulitzer Prize, and has become a classic of modern American literature.",
"The novel Moby-Dick was written by Herman Melville and first published in 1851. It is considered a masterpiece of American literature and deals with complex themes of obsession, revenge, and the conflict between good and evil.",
"Harper Lee, an American novelist widely known for her novel To Kill a Mockingbird, was born in 1926 in Monroeville, Alabama. She received the Pulitzer Prize for Fiction in 1961.",
"Jane Austen was an English novelist known primarily for her six major novels, which interpret, critique and comment upon the British landed gentry at the end of the 18th century.",
"The Harry Potter series, which consists of seven fantasy novels written by British author J.K. Rowling, is among the most popular and critically acclaimed books of the modern era.",
"The Great Gatsby, a novel written by American author F. Scott Fitzgerald, was published in 1925. The story is set in the Jazz Age and follows the life of millionaire Jay Gatsby and his pursuit of Daisy Buchanan.",
]
)
]
@pytest.mark.asyncio
async def test_reranker_base():
@ -18,20 +31,6 @@ async def test_reranker_base():
@pytest.mark.asyncio
async def test_mxbai_reranker():
reranker = MxBAIReranker()
chunks = [
Chunk(content=content, document_id=i)
for i, content in enumerate(
[
"To Kill a Mockingbird is a novel by Harper Lee published in 1960. It was immediately successful, winning the Pulitzer Prize, and has become a classic of modern American literature.",
"The novel Moby-Dick was written by Herman Melville and first published in 1851. It is considered a masterpiece of American literature and deals with complex themes of obsession, revenge, and the conflict between good and evil.",
"Harper Lee, an American novelist widely known for her novel To Kill a Mockingbird, was born in 1926 in Monroeville, Alabama. She received the Pulitzer Prize for Fiction in 1961.",
"Jane Austen was an English novelist known primarily for her six major novels, which interpret, critique and comment upon the British landed gentry at the end of the 18th century.",
"The Harry Potter series, which consists of seven fantasy novels written by British author J.K. Rowling, is among the most popular and critically acclaimed books of the modern era.",
"The Great Gatsby, a novel written by American author F. Scott Fitzgerald, was published in 1925. The story is set in the Jazz Age and follows the life of millionaire Jay Gatsby and his pursuit of Daisy Buchanan.",
]
)
]
reranked = await reranker.rerank(
"Who wrote 'To Kill a Mockingbird'?", chunks, top_n=2
)
@ -41,67 +40,15 @@ async def test_mxbai_reranker():
@pytest.mark.asyncio
async def test_cohere_reranker():
try:
# Mock the client
class MockResult:
def __init__(self, index):
self.index = index
from haiku.rag.reranking.cohere import CohereReranker
class MockResponse:
def __init__(self, results):
self.results = results
reranker = CohereReranker()
assert reranker._model == "rerank-v3.5"
class MockClient:
def __init__(self, api_key=None):
pass
def rerank(self, model, query, documents, top_n):
return MockResponse([MockResult(1), MockResult(0)])
import haiku.rag.reranking.cohere
original_client = haiku.rag.reranking.cohere.cohere.ClientV2
haiku.rag.reranking.cohere.cohere.ClientV2 = MockClient
try:
from haiku.rag.reranking.cohere import CohereReranker
reranker = CohereReranker()
assert reranker._model == "rerank-v3.5"
chunks = [
Chunk(id=1, content="First chunk", document_id=1),
Chunk(id=2, content="Second chunk", document_id=1),
]
result = await reranker.rerank("test query", chunks)
assert len(result) == 2
assert result[0] == chunks[1] # Should return chunk at index 1 first
assert result[1] == chunks[0] # Should return chunk at index 0 second
finally:
haiku.rag.reranking.cohere.cohere.ClientV2 = original_client
reranked = await reranker.rerank(
"Who wrote 'To Kill a Mockingbird'?", chunks, top_n=2
)
assert [r.document_id for r in reranked] == [0, 2]
except ImportError:
pytest.skip("Cohere package not installed")
@pytest.mark.asyncio
async def test_get_reranker():
try:
class MockClient:
def __init__(self, api_key=None):
pass
import haiku.rag.reranking.cohere
original_client = haiku.rag.reranking.cohere.cohere.ClientV2
haiku.rag.reranking.cohere.cohere.ClientV2 = MockClient
try:
reranker = get_reranker()
assert reranker._model == "rerank-v3.5"
assert hasattr(reranker, "rerank")
finally:
haiku.rag.reranking.cohere.cohere.ClientV2 = original_client
except ImportError:
pytest.skip("Cohere package not installed")