Rename FastMCP to MCPServer (#1951)

tests/server/test_lifespan.py

@@ -1,4 +1,4 @@
-"""Tests for lifespan functionality in both low-level and FastMCP servers."""
+"""Tests for lifespan functionality in both low-level and MCPServer servers."""
 
 from collections.abc import AsyncIterator
 from contextlib import asynccontextmanager
@@ -8,8 +8,8 @@ import anyio
 import pytest
 from pydantic import TypeAdapter
 
-from mcp.server.fastmcp import Context, FastMCP
 from mcp.server.lowlevel.server import NotificationOptions, Server
+from mcp.server.mcpserver import Context, MCPServer
 from mcp.server.models import InitializationOptions
 from mcp.server.session import ServerSession
 from mcp.shared.message import SessionMessage
@@ -120,11 +120,11 @@ async def test_lowlevel_server_lifespan():
 
 
 @pytest.mark.anyio
-async def test_fastmcp_server_lifespan():
-    """Test that lifespan works in FastMCP server."""
+async def test_mcpserver_server_lifespan():
+    """Test that lifespan works in MCPServer server."""
 
     @asynccontextmanager
-    async def test_lifespan(server: FastMCP) -> AsyncIterator[dict[str, bool]]:
+    async def test_lifespan(server: MCPServer) -> AsyncIterator[dict[str, bool]]:
         """Test lifespan context that tracks startup/shutdown."""
         context = {"started": False, "shutdown": False}
         try:
@@ -133,7 +133,7 @@ async def test_fastmcp_server_lifespan():
         finally:
             context["shutdown"] = True
 
-    server = FastMCP("test", lifespan=test_lifespan)
+    server = MCPServer("test", lifespan=test_lifespan)
 
     # Create memory streams for testing
     send_stream1, receive_stream1 = anyio.create_memory_object_stream[SessionMessage](100)
@@ -152,10 +152,10 @@ async def test_fastmcp_server_lifespan():
     async with anyio.create_task_group() as tg, send_stream1, receive_stream1, send_stream2, receive_stream2:
 
         async def run_server():
-            await server._mcp_server.run(
+            await server._lowlevel_server.run(
                 receive_stream1,
                 send_stream2,
-                server._mcp_server.create_initialization_options(),
+                server._lowlevel_server.create_initialization_options(),
                 raise_exceptions=True,
             )