mirror of
https://github.com/langbot-app/LangBot.git
synced 2026-07-21 20:06:06 +00:00
Junyan Qin
71 lines
2.1 KiB
Python
71 lines
2.1 KiB
Python
from __future__ import annotations
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from types import SimpleNamespace
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from unittest.mock import AsyncMock, Mock
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import pytest
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from langbot.pkg.provider.tools.loaders.mcp_policy import (
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MCPStdioDisabledError,
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require_stdio_mcp_enabled,
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stdio_mcp_enabled,
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)
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from langbot.pkg.provider.tools.loaders.mcp import MCPLoader
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def _app(config: dict) -> SimpleNamespace:
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return SimpleNamespace(instance_config=SimpleNamespace(data=config))
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def test_oss_default_remains_enabled_when_key_is_absent():
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assert stdio_mcp_enabled(_app({})) is True
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@pytest.mark.parametrize(
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'value',
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[False, 'false', 0, None, {}, []],
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)
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def test_disabled_or_invalid_values_fail_closed(value):
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ap = _app({'mcp': {'stdio': {'enabled': value}}})
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assert stdio_mcp_enabled(ap) is False
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with pytest.raises(MCPStdioDisabledError, match='disabled by instance policy'):
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require_stdio_mcp_enabled(ap, {'mode': 'stdio'})
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def test_remote_transport_is_independent_of_stdio_gate():
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ap = _app({'mcp': {'stdio': {'enabled': False}}})
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require_stdio_mcp_enabled(ap, {'mode': 'remote'})
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@pytest.mark.asyncio
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async def test_bootstrap_retains_but_does_not_launch_disabled_stdio_rows():
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server = SimpleNamespace(uuid='server-a', workspace_uuid='workspace-a')
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result = Mock()
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result.all.return_value = [server]
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ap = _app({'mcp': {'stdio': {'enabled': False}}})
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ap.logger = Mock()
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ap.persistence_mgr = SimpleNamespace(
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execute_async=AsyncMock(return_value=result),
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serialize_model=Mock(
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return_value={
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'uuid': 'server-a',
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'workspace_uuid': 'workspace-a',
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'name': 'local',
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'mode': 'stdio',
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'enable': True,
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'extra_args': {},
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}
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),
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)
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ap.workspace_service = SimpleNamespace(get_execution_binding=AsyncMock())
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loader = MCPLoader(ap)
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loader.host_mcp_server = AsyncMock()
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await loader.load_mcp_servers_from_db()
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loader.host_mcp_server.assert_not_awaited()
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ap.workspace_service.get_execution_binding.assert_not_awaited()
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assert loader.sessions == {}
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