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58 lines
2.0 KiB
Python
58 lines
2.0 KiB
Python
"""Tests for the MCPServerTask reconnect signal.
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When the OAuth layer cannot recover in-place (e.g., external refresh of a
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single-use refresh_token made the SDK's in-memory refresh fail), the tool
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handler signals MCPServerTask to tear down the current MCP session and
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reconnect with fresh credentials. This file exercises the signal plumbing
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in isolation from the full stdio/http transport machinery.
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"""
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import asyncio
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import pytest
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@pytest.mark.asyncio
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async def test_reconnect_event_attribute_exists():
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"""MCPServerTask has a _reconnect_event alongside _shutdown_event."""
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from tools.mcp_tool import MCPServerTask
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task = MCPServerTask("test")
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assert hasattr(task, "_reconnect_event")
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assert isinstance(task._reconnect_event, asyncio.Event)
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assert not task._reconnect_event.is_set()
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@pytest.mark.asyncio
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async def test_wait_for_lifecycle_event_returns_reconnect():
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"""When _reconnect_event fires, helper returns 'reconnect' and clears it."""
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from tools.mcp_tool import MCPServerTask
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task = MCPServerTask("test")
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task._reconnect_event.set()
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reason = await task._wait_for_lifecycle_event()
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assert reason == "reconnect"
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# Should have cleared so the next cycle starts fresh
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assert not task._reconnect_event.is_set()
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@pytest.mark.asyncio
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async def test_wait_for_lifecycle_event_returns_shutdown():
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"""When _shutdown_event fires, helper returns 'shutdown'."""
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from tools.mcp_tool import MCPServerTask
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task = MCPServerTask("test")
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task._shutdown_event.set()
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reason = await task._wait_for_lifecycle_event()
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assert reason == "shutdown"
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@pytest.mark.asyncio
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async def test_wait_for_lifecycle_event_shutdown_wins_when_both_set():
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"""If both events are set simultaneously, shutdown takes precedence."""
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from tools.mcp_tool import MCPServerTask
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task = MCPServerTask("test")
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task._shutdown_event.set()
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task._reconnect_event.set()
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reason = await task._wait_for_lifecycle_event()
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assert reason == "shutdown"
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