test: update tests for new query optimization

Author: GermanMT

tests/unit/services/test_vulnerability_service.py

@@ -36,7 +36,7 @@ async def test_read_vulnerability_by_id_found(self, vulnerability_service, mock_
                 {"id": "EXPLOIT-123", "name": "Test Exploit"}
             ],
             "cwes": [
-                {"@ID": "CWE-79", "name": "Cross-site Scripting"}
+                {"id": "CWE-79", "name": "Cross-site Scripting"}
             ]
         }])
         mock_collection.aggregate.return_value = mock_cursor
@@ -62,37 +62,6 @@ async def test_read_vulnerability_by_id_not_found(self, vulnerability_service, m
         assert result["vuln_impact"] == 0.0
         assert result["attack_vector"] == ""
 
-    @pytest.mark.asyncio
-    async def test_read_vulnerability_pipeline_structure(self, vulnerability_service, mock_db):
-        _, mock_collection = mock_db
-
-        mock_cursor = Mock()
-        mock_cursor.to_list = AsyncMock(return_value=[{
-            "id": "CVE-TEST",
-            "vuln_impact": 5.0,
-            "attack_vector": "test",
-            "exploits": [],
-            "cwes": []
-        }])
-        mock_collection.aggregate.return_value = mock_cursor
-
-        await vulnerability_service.read_vulnerability_by_id("CVE-TEST")
-
-        call_args = mock_collection.aggregate.call_args[0][0]
-
-        assert len(call_args) == 4
-        assert "$match" in call_args[0]
-        assert call_args[0]["$match"]["id"] == "CVE-TEST"
-
-        assert "$lookup" in call_args[1]
-        assert call_args[1]["$lookup"]["from"] == "exploits"
-        assert "$lookup" in call_args[2]
-        assert call_args[2]["$lookup"]["from"] == "cwes"
-
-        assert "$addFields" in call_args[3]
-        assert "vuln_impact" in call_args[3]["$addFields"]
-        assert "attack_vector" in call_args[3]["$addFields"]
-
     @pytest.mark.asyncio
     async def test_read_vulnerability_with_no_exploits(self, vulnerability_service, mock_db):
         _, mock_collection = mock_db