fix bm25 test

tests/unit/encoders/test_bm25.py

@@ -9,11 +9,11 @@ def bm25_encoder():
 
 
 class TestBM25Encoder:
-    def test_initialization(self):
+    def test_initialization(self, bm25_encoder):
         bm25_encoder = BM25Encoder()
         assert len(bm25_encoder.idx_mapping) != 0
 
-    def test_call_method(self):
+    def test_call_method(self, bm25_encoder):
         result = bm25_encoder(["test"])
         assert isinstance(result, list), "Result should be a list"
         assert all(