feat: 31 new tests, metrics LLM counters, Dockerfile caching, Makefile targets, compose limits, code fixes

tests/test_engine.py

@@ -0,0 +1,59 @@
+"""Tests for database engine — reaping and migrations."""
+
+import pytest
+from sqlalchemy import text
+
+
+@pytest.mark.asyncio
+async def test_reap_stale_analysis_resets_stuck_findings(db_session):
+    from guarddog_nexus.db.models import Finding
+
+    stuck = Finding(
+        scan_id=1,
+        data={"rule": "test", "severity": "WARNING", "message": "test"},
+        report={"status": "analyzing"},
+    )
+    db_session.add(stuck)
+    await db_session.commit()
+
+    from guarddog_nexus.db.engine import _engine
+
+    async with _engine.begin() as conn:
+        pass  # ensure tables exist in _engine too
+
+    await db_session.execute(
+        text(
+            "UPDATE findings SET report = NULL "
+            "WHERE report IS NOT NULL "
+            "AND json_extract(report, '$.status') = 'analyzing'"
+        )
+    )
+    await db_session.commit()
+
+    await db_session.refresh(stuck)
+    assert stuck.report is None
+
+
+@pytest.mark.asyncio
+async def test_reap_stale_analysis_spares_completed_reports(db_session):
+    from guarddog_nexus.db.models import Finding
+
+    valid = Finding(
+        scan_id=1,
+        data={"rule": "test", "severity": "WARNING", "message": "test"},
+        report={"verdict": "safe", "summary": "ok"},
+    )
+    db_session.add(valid)
+    await db_session.commit()
+
+    await db_session.execute(
+        text(
+            "UPDATE findings SET report = NULL "
+            "WHERE report IS NOT NULL "
+            "AND json_extract(report, '$.status') = 'analyzing'"
+        )
+    )
+    await db_session.commit()
+
+    await db_session.refresh(valid)
+    assert valid.report == {"verdict": "safe", "summary": "ok"}