ref: Add ruff rules for bugbear (B) (#3983)

Add ruff rules for bugbear (B)

src/backend/tests/conftest.py

@@ -11,6 +11,9 @@ from typing import TYPE_CHECKING
 
 import orjson
 import pytest
+from loguru import logger
+from pytest import LogCaptureFixture
+
 from base.langflow.components.inputs.ChatInput import ChatInput
 from dotenv import load_dotenv
 from fastapi.testclient import TestClient
@@ -79,6 +82,19 @@ def get_text():
         assert path.exists(), f"File {path} does not exist. Available files: {list(data_path.iterdir())}"
 
 
+@pytest.fixture
+def caplog(caplog: LogCaptureFixture):
+    handler_id = logger.add(
+        caplog.handler,
+        format="{message}",
+        level=0,
+        filter=lambda record: record["level"].no >= caplog.handler.level,
+        enqueue=False,  # Set to 'True' if your test is spawning child processes.
+    )
+    yield caplog
+    logger.remove(handler_id)
+
+
 @pytest.fixture()
 async def async_client() -> AsyncGenerator:
     from langflow.main import create_app