wehub-resource-sync
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48 lines
1.8 KiB
Python
48 lines
1.8 KiB
Python
import pytest
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from mcp_types import INVALID_REQUEST, ListRootsResult, Root, TextContent
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from pydantic import FileUrl
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from mcp import Client
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from mcp.client import ClientRequestContext
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from mcp.server.mcpserver import Context, MCPServer
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from mcp.shared.exceptions import MCPError
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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: ClientRequestContext,
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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() # pyright: ignore[reportDeprecated]
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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, mode="legacy") 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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# Without a list_roots callback the client responds with an MCPError, which the
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# tool body doesn't catch — the wrapper re-raises it as a top-level JSON-RPC
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# error rather than wrapping it as an isError result.
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async with Client(server, mode="legacy") as client:
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with pytest.raises(MCPError) as exc_info:
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await client.call_tool("test_list_roots", {"message": "test message"})
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assert exc_info.value.error.code == INVALID_REQUEST
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