fix: Address formatting and type checking issues

tests/server/fastmcp/test_server.py

@@ -35,7 +35,9 @@ class TestServer:
         """Test that FastMCP handles non-ASCII characters in descriptions correctly"""
         mcp = FastMCP()
 
-        @mcp.tool(description="🌟 This tool uses emojis and UTF-8 characters: á é í ó ú ñ 漢字 🎉")
+        @mcp.tool(
+            description="🌟 This tool uses emojis and UTF-8 characters: á é í ó ú ñ 漢字 🎉"
+        )
         def hello_world(name: str = "世界") -> str:
             return f"¡Hola, {name}! 👋"
 
@@ -43,6 +45,7 @@ class TestServer:
             tools = await client.list_tools()
             assert len(tools.tools) == 1
             tool = tools.tools[0]
+            assert tool.description is not None
             assert "🌟" in tool.description
             assert "漢字" in tool.description
             assert "🎉" in tool.description

tests/server/test_session.py

@@ -18,8 +18,12 @@ from mcp.types import (
 
 @pytest.mark.anyio
 async def test_server_session_initialize():
-    server_to_client_send, server_to_client_receive = anyio.create_memory_object_stream[JSONRPCMessage](1)
-    client_to_server_send, client_to_server_receive = anyio.create_memory_object_stream[JSONRPCMessage](1)
+    server_to_client_send, server_to_client_receive = anyio.create_memory_object_stream[
+        JSONRPCMessage
+    ](1)
+    client_to_server_send, client_to_server_receive = anyio.create_memory_object_stream[
+        JSONRPCMessage
+    ](1)
 
     async def run_client(client: ClientSession):
         async for message in client_session.incoming_messages: