wehub-resource-sync
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54 lines
2.0 KiB
Python
54 lines
2.0 KiB
Python
"""Ping interactions against the low-level Server, driven through the public Client API."""
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import mcp_types as types
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import pytest
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from inline_snapshot import snapshot
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from mcp_types import CallToolResult, EmptyResult, TextContent
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from mcp.server import Server, ServerRequestContext
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from tests.interaction._connect import Connect
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from tests.interaction._requirements import requirement
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pytestmark = pytest.mark.anyio
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@requirement("lifecycle:ping")
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@requirement("ping:client-to-server")
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async def test_client_ping_returns_empty_result(connect: Connect) -> None:
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"""A client ping is answered with an empty result, even by a server with no handlers."""
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server = Server("silent")
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async with connect(server) as client:
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result = await client.send_ping() # pyright: ignore[reportDeprecated]
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assert result == snapshot(EmptyResult())
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@requirement("lifecycle:ping")
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@requirement("ping:server-to-client")
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async def test_server_ping_returns_empty_result(connect: Connect) -> None:
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"""A server-initiated ping sent while a request is in flight is answered by the client.
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The tool returns the type of the ping response, proving the round trip completed inside
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the handler before the tool result was produced.
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"""
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async def list_tools(
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ctx: ServerRequestContext, params: types.PaginatedRequestParams | None
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) -> types.ListToolsResult:
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return types.ListToolsResult(
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tools=[types.Tool(name="ping_back", description="Ping the client.", input_schema={"type": "object"})]
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)
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async def call_tool(ctx: ServerRequestContext, params: types.CallToolRequestParams) -> CallToolResult:
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assert params.name == "ping_back"
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pong = await ctx.session.send_ping()
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return CallToolResult(content=[TextContent(text=type(pong).__name__)])
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server = Server("pinger", on_list_tools=list_tools, on_call_tool=call_tool)
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async with connect(server) as client:
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result = await client.call_tool("ping_back", {})
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assert result == snapshot(CallToolResult(content=[TextContent(text="EmptyResult")]))
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