content: """Test for issue #552: stdio_client hangs on Windows."""
  
  import sys
  from textwrap import dedent
  
  import anyio
  import pytest
  
  from mcp import ClientSession, StdioServerParameters
  from mcp.client.stdio import stdio_client
  
  
  @pytest.mark.skipif(sys.platform != "win32", reason="Windows-specific test")  # pragma: no cover
  @pytest.mark.anyio
  async def test_windows_stdio_client_with_session():
      """
      Test the exact scenario from issue #552: Using ClientSession with stdio_client.
  
      This reproduces the original bug report where stdio_client hangs on Windows 11
      when used with ClientSession.
      """
      # Create a minimal MCP server that responds to initialization
      server_script = dedent("""
          import json
          import sys
  
          # Read initialization request
          line = sys.stdin.readline()
  
          # Send initialization response
          response = {
              "jsonrpc": "2.0",
              "id": 1,
              "result": {
                  "protocolVersion": "1.0",
                  "capabilities": {},
                  "serverInfo": {"name": "test-server", "version": "1.0"}
              }
          }
          print(json.dumps(response))
          sys.stdout.flush()
  
          # Exit after a short delay
          import time
          time.sleep(0.1)
          sys.exit(0)
      """).strip()
  
      params = StdioServerParameters(
          command=sys.executable,
          args=["-c", server_script],
      )
  
      # This is the exact pattern from the bug report
      with anyio.fail_after(10):
          try:
              async with stdio_client(params) as (read, write):
                  async with ClientSession(read, write) as session:
                      await session.initialize()
                  # Should exit ClientSession without hanging
              # Should exit stdio_client without hanging
          except Exception:
              # Connection errors are expected when process exits
              pass
  