Max Isbey
48 lines
1.7 KiB
Python
48 lines
1.7 KiB
Python
import pytest
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from pydantic import FileUrl
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from mcp import Client
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from mcp.client.session import ClientSession
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from mcp.server.mcpserver import Context, MCPServer
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from mcp.shared._context import RequestContext
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from mcp.types import ListRootsResult, Root, TextContent
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@pytest.mark.anyio
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async def test_list_roots_callback():
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server = MCPServer("test")
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callback_return = ListRootsResult(
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roots=[
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Root(uri=FileUrl("file://users/fake/test"), name="Test Root 1"),
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Root(uri=FileUrl("file://users/fake/test/2"), name="Test Root 2"),
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]
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)
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async def list_roots_callback(
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context: RequestContext[ClientSession],
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) -> ListRootsResult:
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return callback_return
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@server.tool("test_list_roots")
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async def test_list_roots(context: Context, message: str):
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roots = await context.session.list_roots()
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assert roots == callback_return
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return True
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# Test with list_roots callback
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async with Client(server, list_roots_callback=list_roots_callback) as client:
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# Make a request to trigger sampling callback
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result = await client.call_tool("test_list_roots", {"message": "test message"})
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assert result.is_error is False
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assert isinstance(result.content[0], TextContent)
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assert result.content[0].text == "true"
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# Test without list_roots callback
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async with Client(server) as client:
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# Make a request to trigger sampling callback
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result = await client.call_tool("test_list_roots", {"message": "test message"})
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assert result.is_error is True
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assert isinstance(result.content[0], TextContent)
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assert result.content[0].text == "Error executing tool test_list_roots: List roots not supported"
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