Align with spec #3002: optional clientInfo, serverInfo in result _meta (#3143)

tests/docs_src/_helpers.py

@@ -0,0 +1,23 @@
+"""Shared helpers for the docs_src tests."""
+
+from typing import TypeVar
+
+from mcp_types import SERVER_INFO_META_KEY, Result
+
+from mcp.server import Server
+from mcp.server.mcpserver import MCPServer
+
+R = TypeVar("R", bound=Result)
+
+
+def strip_server_info(result: R, server: Server | MCPServer) -> R:
+    """Assert the 2026-era serverInfo stamp, then drop it so snapshots stay focused.
+
+    The doc snippets set no explicit version, so the stamp's version is empty;
+    the fenced outputs in the docs pages leave the stamp out, and the tests
+    mirror the fences.
+    """
+    assert result.meta is not None
+    assert result.meta[SERVER_INFO_META_KEY] == {"name": server.name, "version": ""}
+    result.meta = None
+    return result