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modelcontextprotocol--pytho…/tests/server/lowlevel/test_server_pagination.py
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chore: import upstream snapshot with attribution
2026-07-13 12:10:27 +08:00

84 lines
2.8 KiB
Python

import pytest
from mcp_types import (
ListPromptsResult,
ListResourcesResult,
ListToolsResult,
PaginatedRequestParams,
)
from mcp import Client
from mcp.server import Server, ServerRequestContext
@pytest.mark.anyio
async def test_list_prompts_pagination() -> None:
test_cursor = "test-cursor-123"
received_params: PaginatedRequestParams | None = None
async def handle_list_prompts(
ctx: ServerRequestContext, params: PaginatedRequestParams | None
) -> ListPromptsResult:
nonlocal received_params
received_params = params
return ListPromptsResult(prompts=[], next_cursor="next")
server = Server("test", on_list_prompts=handle_list_prompts)
async with Client(server) as client:
# No cursor provided
await client.list_prompts()
assert received_params is not None
assert received_params.cursor is None
# Cursor provided
await client.list_prompts(cursor=test_cursor)
assert received_params is not None
assert received_params.cursor == test_cursor
@pytest.mark.anyio
async def test_list_resources_pagination() -> None:
test_cursor = "resource-cursor-456"
received_params: PaginatedRequestParams | None = None
async def handle_list_resources(
ctx: ServerRequestContext, params: PaginatedRequestParams | None
) -> ListResourcesResult:
nonlocal received_params
received_params = params
return ListResourcesResult(resources=[], next_cursor="next")
server = Server("test", on_list_resources=handle_list_resources)
async with Client(server) as client:
# No cursor provided
await client.list_resources()
assert received_params is not None
assert received_params.cursor is None
# Cursor provided
await client.list_resources(cursor=test_cursor)
assert received_params is not None
assert received_params.cursor == test_cursor
@pytest.mark.anyio
async def test_list_tools_pagination() -> None:
test_cursor = "tools-cursor-789"
received_params: PaginatedRequestParams | None = None
async def handle_list_tools(ctx: ServerRequestContext, params: PaginatedRequestParams | None) -> ListToolsResult:
nonlocal received_params
received_params = params
return ListToolsResult(tools=[], next_cursor="next")
server = Server("test", on_list_tools=handle_list_tools)
async with Client(server) as client:
# No cursor provided
await client.list_tools()
assert received_params is not None
assert received_params.cursor is None
# Cursor provided
await client.list_tools(cursor=test_cursor)
assert received_params is not None
assert received_params.cursor == test_cursor