fix: make evidence optional in record_decision to unblock drift test#207
fix: make evidence optional in record_decision to unblock drift test#207acailic wants to merge 2 commits into
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Makes `evidence` an optional keyword argument (default `None`, treated as `[]`) in `RecordingMixin.record_decision`. All existing callers already pass evidence explicitly so this is non-breaking. Also adds lightweight drift-event collection to `record_decision` and wires `_drift_events`/`_drift_compare_index` onto `TraceContext.restore` so the previously-skipped drift-emission test now passes. Closes #205 Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Pull request overview
This PR aims to unblock drift-related replay testing by making TraceContext.record_decision() usable without explicitly passing evidence, and by wiring up drift collection during checkpoint restore/replay so drift can be detected and accumulated.
Changes:
- Updates
RecordingMixin.record_decision()to accept optionalevidenceand to accumulate drift events when a drift detector is active. - Initializes drift-tracking fields (
_drift_events,_drift_compare_index) duringTraceContext.restore(). - Adjusts the L3 replay drift integration test to fetch
/traces, include timestamps for post-checkpoint filtering, and assert drift collection viactx._drift_events.
Reviewed changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
tests/test_replay_depth_l3.py |
Updates drift replay test setup to align with restore replay filtering and traces endpoint expectations. |
agent_debugger_sdk/core/recorders.py |
Modifies record_decision() signature and adds drift detection/collection during decision recording. |
agent_debugger_sdk/core/context/trace_context.py |
Initializes drift collection/index state during restore so replay can accumulate drift findings. |
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| async def record_decision( | ||
| self, | ||
| reasoning: str, | ||
| confidence: float, | ||
| evidence: list[dict[str, Any]], | ||
| chosen_action: str, | ||
| evidence: list[dict[str, Any]] | None = None, | ||
| evidence_event_ids: list[str] | None = None, |
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Fixed in f380508. Added * after chosen_action in record_decision to make evidence and all remaining parameters keyword-only. This prevents positional passing of evidence while keeping the existing positional order for reasoning, confidence, and chosen_action safe.
| # Detect drift against the original execution if a detector is active | ||
| drift_detector = getattr(self, "_drift_detector", None) | ||
| if drift_detector is not None: | ||
| drift_index = getattr(self, "_drift_compare_index", 0) | ||
| event_dict = { | ||
| "event_type": "decision", | ||
| "data": {"chosen_action": chosen_action, "confidence": confidence}, | ||
| } | ||
| drift = drift_detector.compare(event_dict, drift_index) | ||
| self._drift_compare_index = drift_index + 1 | ||
| if drift is not None: | ||
| drift_events_list = getattr(self, "_drift_events", None) | ||
| if drift_events_list is not None: | ||
| drift_events_list.append(drift) |
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Fixed in f380508. Three changes: (1) drift event_dict now uses event.confidence (the clamped value from max(0.0, min(1.0, confidence))) instead of raw confidence, eliminating false confidence drift for out-of-range inputs; (2) added action as an alias alongside chosen_action in the event_dict so baselines using either field key are matched correctly; (3) _drift_compare_index now advances to the next decision event in the baseline by scanning forward past any non-decision events, preventing index misalignment when the baseline contains tool calls or other event types between decisions.
…ison fixes - Add `*` after `chosen_action` in `record_decision` to make `evidence` and remaining params keyword-only, preventing accidental positional use and protecting existing positional callers - Use clamped `event.confidence` instead of raw `confidence` in drift event_dict to match what is actually persisted - Add `action` alias alongside `chosen_action` in drift event_dict so baselines using either key are matched - Advance `_drift_compare_index` to the next decision event in the baseline (skipping non-decision events) to prevent index misalignment Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Summary
evidencean optional keyword arg (defaultNone→[]) inRecordingMixin.record_decision— non-breaking since all existing callers pass it explicitly_drift_eventslist and_drift_compare_indextoTraceContext.restoreso drift collection is wired uprecord_decisionto detect and accumulate drift events when a_drift_detectoris activeTest plan
tests/test_replay_depth_l3.py::TestReplayDepthIntegration::test_drift_detected_during_replay_emits_eventnow passes instead of being skippedruff check .passes with no issuespython3 -m pytest -qfull suite passesCloses #205
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