style: auto-fix lint violations from enhanced ruff rules

1 files changed, 4 insertions, 4 deletions

diff --git a/services/strategy-engine/tests/test_engine.py b/services/strategy-engine/tests/test_engine.py
index 2623027..fa888b5 100644
--- a/services/strategy-engine/tests/test_engine.py
+++ b/services/strategy-engine/tests/test_engine.py
@@ -1,21 +1,21 @@
 """Tests for the StrategyEngine."""
 
-from datetime import datetime, timezone
+from datetime import UTC, datetime
 from decimal import Decimal
 from unittest.mock import AsyncMock, MagicMock
 
 import pytest
+from strategy_engine.engine import StrategyEngine
 
-from shared.models import Candle, Signal, OrderSide
 from shared.events import CandleEvent
-from strategy_engine.engine import StrategyEngine
+from shared.models import Candle, OrderSide, Signal
 
 
 def make_candle_event() -> dict:
     candle = Candle(
         symbol="AAPL",
         timeframe="1m",
-        open_time=datetime(2024, 1, 1, tzinfo=timezone.utc),
+        open_time=datetime(2024, 1, 1, tzinfo=UTC),
         open=Decimal("50000"),
         high=Decimal("50100"),
         low=Decimal("49900"),