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https://github.com/NousResearch/hermes-agent.git
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4e0788783b
Follow-up on the salvaged MoA restore fix: - Extract the finally-block restore into _restore_moa_one_shot() so the behavior is unit-testable without re-implementing it, and so the gateway /moa handler and the finally block share one implementation. - Restore the load-bearing #28686 zombie-eviction comment above _release_running_agent_state that the original diff dropped. - Rewrite the tests to call the real _restore_moa_one_shot helper (the originals re-implemented the restore logic inline, so they passed regardless of the production code).
103 lines
3.5 KiB
Python
103 lines
3.5 KiB
Python
"""MoA one-shot model override must be restored on both success and failure.
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These exercise the real ``GatewayRunner._restore_moa_one_shot`` helper that the
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message-handling ``finally`` block calls, so they prove the production logic —
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not a re-implementation of it. The bug being guarded: the restore used to live
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in the ``try`` block, so a turn that raised skipped it and the MoA override
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leaked permanently (every later message silently fanned out through MoA).
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"""
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from types import SimpleNamespace
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from unittest.mock import MagicMock
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from gateway.run import GatewayRunner
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def _make_runner():
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"""Minimal GatewayRunner with only the fields _restore_moa_one_shot reads."""
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runner = object.__new__(GatewayRunner)
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runner._session_model_overrides = {}
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runner._evict_cached_agent = MagicMock()
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return runner
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def _make_event(moa_disable=False, moa_restore=None):
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event = SimpleNamespace()
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if moa_disable:
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event._moa_disable_after_turn = True
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event._moa_restore_override = moa_restore
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return event
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def test_restore_reverts_to_previous_override():
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"""A one-shot turn restores the prior per-session model override."""
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runner = _make_runner()
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key = "agent:main:telegram:dm:123"
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runner._session_model_overrides[key] = {"provider": "moa", "model": "default"}
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event = _make_event(
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moa_disable=True,
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moa_restore={"provider": "openrouter", "model": "gpt-4"},
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)
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runner._restore_moa_one_shot(event, key)
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assert runner._session_model_overrides[key] == {
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"provider": "openrouter",
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"model": "gpt-4",
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}
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runner._evict_cached_agent.assert_called_once_with(key)
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def test_restore_none_clears_override():
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"""If the user had no override before /moa, the MoA override is removed."""
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runner = _make_runner()
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key = "agent:main:discord:guild:456"
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runner._session_model_overrides[key] = {"provider": "moa", "model": "default"}
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event = _make_event(moa_disable=True, moa_restore=None)
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runner._restore_moa_one_shot(event, key)
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assert key not in runner._session_model_overrides
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runner._evict_cached_agent.assert_called_once_with(key)
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def test_no_restore_for_non_one_shot_turn():
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"""Normal (non-MoA) turns must not touch model overrides or evict agents."""
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runner = _make_runner()
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key = "agent:main:slack:channel:789"
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runner._session_model_overrides[key] = {"provider": "openrouter", "model": "gpt-4"}
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event = _make_event() # no _moa_disable_after_turn
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runner._restore_moa_one_shot(event, key)
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assert runner._session_model_overrides[key] == {
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"provider": "openrouter",
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"model": "gpt-4",
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}
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runner._evict_cached_agent.assert_not_called()
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def test_restore_runs_from_finally_even_when_turn_raises():
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"""The whole point of the fix: a raising turn still reverts the override.
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Mirrors the real call site — the restore is invoked from a ``finally`` block,
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so it fires after an exception propagates out of the turn body.
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"""
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runner = _make_runner()
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key = "agent:main:telegram:dm:999"
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runner._session_model_overrides[key] = {"provider": "moa", "model": "default"}
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event = _make_event(
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moa_disable=True,
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moa_restore={"provider": "openrouter", "model": "gpt-4"},
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)
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with __import__("pytest").raises(RuntimeError):
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try:
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raise RuntimeError("provider error mid-turn")
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finally:
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runner._restore_moa_one_shot(event, key)
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assert runner._session_model_overrides[key] == {
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"provider": "openrouter",
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"model": "gpt-4",
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}
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