fix 500

backend/tests/test_full_status_heartbeat_parsing.py

@@ -0,0 +1,53 @@
+import asyncio
+
+
+class _FakeAcquire:
+    def __init__(self, conn):
+        self._conn = conn
+
+    async def __aenter__(self):
+        return self._conn
+
+    async def __aexit__(self, exc_type, exc, tb):
+        return False
+
+
+class _FakePool:
+    def __init__(self, conn):
+        self._conn = conn
+
+    def acquire(self):
+        return _FakeAcquire(self._conn)
+
+
+def test_status_full_parses_heartbeat_and_inverter_timestamps(monkeypatch):
+    # Regression: /status/full used to pass string timestamps into _age_seconds()
+    # which expects datetime and accesses .tzinfo.
+    from app.routers import full_status
+
+    async def _fake_fetch_json(conn, sql, *args):
+        assert "fn_site_full_status" in sql
+        return {
+            "site": {"code": "X"},
+            "operating_mode": {"mode_code": "AUTO"},
+            "heartbeat": {"last_seen": "2026-04-20T08:56:36.186Z"},
+            "inverter_latest": {"measured_at": "2026-04-20T08:56:31.165Z"},
+            "ev_chargers": [],
+            "heat_pump_latest": None,
+            "battery_limits": {},
+            "active_plan": None,
+            "planning_intervals": [],
+            "tomorrow_price_slot_count": 96,
+        }
+
+    monkeypatch.setattr(full_status, "fetch_json", _fake_fetch_json)
+
+    out = asyncio.run(
+        full_status.get_site_status_full(site_id=2, pool=_FakePool(conn=object()))
+    )
+    assert isinstance(out, dict)
+    assert out["heartbeat"]["last_seen"] is not None
+    assert out["heartbeat"]["age_seconds"] is not None
+    assert out["telemetry"]["inverter"]["measured_at"] is not None
+    assert out["telemetry"]["inverter"]["age_seconds"] is not None
+