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69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
"""Regression for issue #2509 — MCP tools must expose their input parameters.
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``McpManager.get_tool_descriptions_for_prompt()`` previously emitted only
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``- name: description`` per MCP tool, so agents (notably on the fenced-block
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tool path used by Ollama models) never saw a tool's declared inputs and guessed
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argument names from the description alone. ``get_all_tools()`` also dropped the
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``input_schema`` entirely. These tests pin that the inputs now reach both
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surfaces.
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"""
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from src.mcp_manager import McpManager
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def _mgr_with_tool() -> McpManager:
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mgr = McpManager()
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mgr._tools = {
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"srv1": [
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{
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"name": "fetch_doc",
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"description": "Fetch a document by path.",
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"input_schema": {
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"type": "object",
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"properties": {
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"path": {"type": "string", "description": "file path"},
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"limit": {"type": "integer"},
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},
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"required": ["path"],
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},
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}
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]
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}
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mgr._connections = {"srv1": {"status": "connected", "name": "Files", "identity": ""}}
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return mgr
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def test_get_all_tools_carries_input_schema():
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tools = _mgr_with_tool().get_all_tools()
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assert tools and tools[0]["input_schema"]["properties"]["path"]["type"] == "string"
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def test_prompt_descriptions_surface_param_names_and_required():
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text = _mgr_with_tool().get_tool_descriptions_for_prompt()
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assert "mcp__srv1__fetch_doc" in text
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assert "path" in text and "limit" in text # inputs are surfaced to the model
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assert "required" in text # required-ness is surfaced
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def test_format_mcp_params_handles_no_params():
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from src.mcp_manager import _format_mcp_params
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assert _format_mcp_params({}) == ""
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assert _format_mcp_params(None) == ""
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assert _format_mcp_params({"type": "object", "properties": {}}) == ""
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def test_format_mcp_params_marks_required_and_types():
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from src.mcp_manager import _format_mcp_params
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out = _format_mcp_params(
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{
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"type": "object",
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"properties": {"q": {"type": "string"}, "n": {"type": "integer"}},
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"required": ["q"],
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}
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)
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assert '"q": string (required)' in out
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assert '"n": integer' in out
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assert '"n": integer (required)' not in out # optional param not marked required
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