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The detect side of the self-healing loop, modeled on the strategy engine: a pure assess() turns breaching telemetry samples into RegressionObservations (with a stable per-signal fingerprint for later dedupe), and run_cycle() is a no-op unless self_heal_enabled and otherwise only sends the CEO one ack-notification per regression. Detect + notify only — it never originates, starts, merges, or deploys; the telemetry source is injectable for testing. 6 unit tests.
99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
"""Self-heal regression engine — pure assess + gated, notify-only run_cycle.
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``assess()`` turns breaching telemetry samples into observations with no side
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effects; ``run_cycle()`` is a no-op unless ``self_heal_enabled`` and otherwise
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only notifies the CEO (this slice never originates, starts, merges, or deploys).
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"""
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from __future__ import annotations
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from unittest.mock import AsyncMock, MagicMock
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import pytest
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from roboco.config import settings as cfg
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from roboco.services.notification import NotificationService
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from roboco.services.self_heal_engine import SelfHealEngine
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from roboco.services.telemetry import TelemetrySample
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class _FakeSource:
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"""A TelemetrySource stand-in returning canned samples."""
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def __init__(self, samples: list[TelemetrySample]) -> None:
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self._samples = samples
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async def fetch(self) -> list[TelemetrySample]:
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return list(self._samples)
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def _sample(value: float) -> TelemetrySample:
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return TelemetrySample(
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signal_name="ci_conclusion:roboco",
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value=value,
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threshold=1.0,
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window="latest_completed_run",
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repo_hint="roboco",
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observed_at="2026-06-17T00:00:00Z",
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raw_ref="https://github.com/x/roboco/actions/runs/1",
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detail="CI on roboco@master concluded 'failure'",
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)
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def _engine(samples: list[TelemetrySample]) -> SelfHealEngine:
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return SelfHealEngine(MagicMock(), source=_FakeSource(samples))
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@pytest.mark.asyncio
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async def test_assess_breach_yields_observation() -> None:
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obs = await _engine([_sample(1.0)]).assess()
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assert len(obs) == 1
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assert obs[0].repo_hint == "roboco"
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assert obs[0].signal_name == "ci_conclusion:roboco"
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assert obs[0].fingerprint # non-empty stable hash
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@pytest.mark.asyncio
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async def test_assess_no_breach_yields_nothing() -> None:
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assert await _engine([_sample(0.0)]).assess() == []
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@pytest.mark.asyncio
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async def test_assess_is_pure_no_notification(monkeypatch: pytest.MonkeyPatch) -> None:
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send = AsyncMock()
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monkeypatch.setattr(NotificationService, "send_ack_notification", send)
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await _engine([_sample(1.0)]).assess()
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send.assert_not_awaited()
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@pytest.mark.asyncio
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async def test_run_cycle_noop_when_disabled(monkeypatch: pytest.MonkeyPatch) -> None:
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monkeypatch.setattr(cfg, "self_heal_enabled", False)
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send = AsyncMock()
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monkeypatch.setattr(NotificationService, "send_ack_notification", send)
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assert await _engine([_sample(1.0)]).run_cycle() == []
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send.assert_not_awaited()
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@pytest.mark.asyncio
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async def test_run_cycle_notifies_ceo_when_enabled(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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monkeypatch.setattr(cfg, "self_heal_enabled", True)
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send = AsyncMock()
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monkeypatch.setattr(NotificationService, "send_ack_notification", send)
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obs = await _engine([_sample(1.0)]).run_cycle()
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assert len(obs) == 1
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send.assert_awaited_once()
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call = send.await_args
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assert call is not None
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assert call.kwargs["from_agent"] == "system"
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assert call.kwargs["to_agent"] == "ceo"
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assert "[self-heal]" in call.kwargs["body"]
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@pytest.mark.asyncio
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async def test_fingerprint_is_stable() -> None:
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a = (await _engine([_sample(1.0)]).assess())[0].fingerprint
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b = (await _engine([_sample(1.0)]).assess())[0].fingerprint
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assert a == b
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