After running the ruff format

Author: Nishanth

src/tools/list.py

@@ -83,26 +83,27 @@ async def llen(name: str) -> int:
     except RedisError as e:
         return f"Error retrieving length of list '{name}': {str(e)}"
 
+
 @mcp.tool()
 async def lrem(name: str, count: int, element: FieldT) -> str:
     """Remove elements from a Redis list.
-    
+
     Args:
         name: The name of the list
         count: Number of elements to remove (0 = all, positive = from head, negative = from tail)
         element: The element value to remove
-        
+
     Returns:
         A string indicating the number of elements removed.
     """
     try:
         r = RedisConnectionManager.get_connection()
         removed_count = r.lrem(name, count, element)
-        
+
         if removed_count == 0:
             return f"Element '{element}' not found in list '{name}' or list does not exist."
         else:
             return f"Removed {removed_count} occurrence(s) of '{element}' from list '{name}'."
-            
+
     except RedisError as e:
         return f"Error removing element from list '{name}': {str(e)}"

tests/conftest.py

@@ -2,6 +2,35 @@
 Pytest configuration and fixtures for Redis MCP Server tests.
 """
 
+# --- Mock "mcp" before any test imports ---
+import sys
+import types
+
+
+# Define a fake callable FastMCP class
+class _FakeFastMCP:
+    def __init__(self, *args, **kwargs):
+        pass
+
+    def tool(self, *args, **kwargs):
+        def decorator(func):
+            return func
+
+        return decorator
+
+
+# Build the mcp mock hierarchy
+mcp_mock = types.SimpleNamespace(tool=lambda *a, **kw: (lambda f: f))
+mcp_server_mock = types.SimpleNamespace(
+    fastmcp=types.SimpleNamespace(FastMCP=_FakeFastMCP)
+)
+
+sys.modules["mcp"] = mcp_mock
+sys.modules["mcp.server"] = mcp_server_mock
+sys.modules["mcp.server.fastmcp"] = mcp_server_mock.fastmcp
+# ------------------------------------------
+
+
 from unittest.mock import Mock, patch
 
 import pytest