emma-hermes/tests/gateway/test_internal_event_never_i...

152 lines
5.2 KiB
Python

"""Regression test: internal synthetic events must never interrupt a busy session.
Reported by @Heeervas (June 2026): an ``async_delegation`` completion from a
``delegate_task(background=true)`` subagent re-enters the originating gateway
session as an internal ``MessageEvent``. When that session was busy running a
turn, the completion was treated exactly like a user TEXT message and hit the
default ``busy_input_mode='interrupt'`` path — calling
``running_agent.interrupt()`` and aborting the active turn, plus sending a
"⚡ Interrupting current task" ack. The same shape affects background-process
completions (terminal ``notify_on_complete``), which also re-enter as internal
events.
The fix: ``_handle_active_session_busy_message`` returns ``False`` early for any
event with ``internal=True``, so the base adapter queues it silently (no
interrupt, no ack) and it cascades as a new turn after the current one finishes.
This preserves strict message-role alternation and the design invariant that a
completion surfaces as a NEW turn only when idle, never spliced into a running
turn.
"""
from __future__ import annotations
import sys
import threading
import types
from unittest.mock import AsyncMock, MagicMock
import pytest
# Minimal telegram stubs so gateway imports cleanly (mirrors sibling tests).
_tg = types.ModuleType("telegram")
_tg.constants = types.ModuleType("telegram.constants")
_ct = MagicMock()
_ct.SUPERGROUP = "supergroup"
_ct.GROUP = "group"
_ct.PRIVATE = "private"
_tg.constants.ChatType = _ct
sys.modules.setdefault("telegram", _tg)
sys.modules.setdefault("telegram.constants", _tg.constants)
sys.modules.setdefault("telegram.ext", types.ModuleType("telegram.ext"))
from gateway.platforms.base import ( # noqa: E402
MessageEvent,
MessageType,
SessionSource,
build_session_key,
)
from gateway.run import GatewayRunner # noqa: E402
def _make_internal_event(text: str = "[async delegation completed]") -> MessageEvent:
source = SessionSource(
platform=MagicMock(value="telegram"),
chat_id="123",
chat_type="private",
user_id="user1",
)
return MessageEvent(
text=text,
message_type=MessageType.TEXT,
source=source,
message_id="msg1",
internal=True,
)
def _make_runner() -> GatewayRunner:
runner = object.__new__(GatewayRunner)
runner._running_agents = {}
runner._running_agents_ts = {}
runner._pending_messages = {}
runner._busy_ack_ts = {}
runner._draining = False
runner.adapters = {}
runner.config = MagicMock()
runner.session_store = None
runner.hooks = MagicMock()
runner.hooks.emit = AsyncMock()
runner.pairing_store = MagicMock()
runner.pairing_store.is_approved.return_value = True
runner._is_user_authorized = lambda _source: True
return runner
def _make_adapter() -> MagicMock:
adapter = MagicMock()
adapter._pending_messages = {}
adapter._send_with_retry = AsyncMock()
adapter.config = MagicMock()
adapter.config.extra = {}
adapter.platform = MagicMock(value="telegram")
return adapter
def _make_running_parent() -> MagicMock:
parent = MagicMock()
parent._active_children = [] # no active subagents at completion time
parent._active_children_lock = threading.Lock()
parent.get_activity_summary.return_value = {
"api_call_count": 4,
"max_iterations": 60,
"current_tool": "terminal",
}
return parent
@pytest.mark.asyncio
async def test_internal_event_does_not_interrupt_busy_session() -> None:
"""The async-delegation completion must not abort the active turn."""
runner = _make_runner()
runner._busy_input_mode = "interrupt" # the default that caused the bug
adapter = _make_adapter()
event = _make_internal_event()
sk = build_session_key(event.source)
parent = _make_running_parent()
runner._running_agents[sk] = parent
runner.adapters[event.source.platform] = adapter
handled = await runner._handle_active_session_busy_message(event, sk)
# Returns False so the base adapter silently queues the internal event
# as a cascading next turn — it must NOT be handled-with-interrupt here.
assert handled is False
# The active turn must survive.
parent.interrupt.assert_not_called()
# No "⚡ Interrupting current task" (or any) ack for a synthetic event.
adapter._send_with_retry.assert_not_called()
@pytest.mark.asyncio
async def test_non_internal_event_still_interrupts() -> None:
"""Regression-guard the other direction: a real user message in interrupt
mode with no subagents still interrupts (behaviour unchanged)."""
runner = _make_runner()
runner._busy_input_mode = "interrupt"
adapter = _make_adapter()
event = _make_internal_event(text="please stop")
# Flip to a real user message.
object.__setattr__(event, "internal", False)
sk = build_session_key(event.source)
parent = _make_running_parent()
runner._running_agents[sk] = parent
runner.adapters[event.source.platform] = adapter
from unittest.mock import patch
with patch("gateway.run.merge_pending_message_event"):
handled = await runner._handle_active_session_busy_message(event, sk)
assert handled is True
parent.interrupt.assert_called_once_with("please stop")