1 files changed, 11 insertions, 12 deletions
diff --git a/services/backtester/tests/test_metrics.py b/services/backtester/tests/test_metrics.py
index 582309a..13e545e 100644
--- a/services/backtester/tests/test_metrics.py
+++ b/services/backtester/tests/test_metrics.py
@@ -1,18 +1,17 @@
 """Tests for detailed backtest metrics."""
 
 import math
-from datetime import datetime, timedelta, timezone
+from datetime import UTC, datetime, timedelta
 from decimal import Decimal
 
 import pytest
-
 from backtester.metrics import TradeRecord, compute_detailed_metrics
 
 
 def _make_trade(side: str, price: str, minutes_offset: int = 0) -> TradeRecord:
     return TradeRecord(
-        time=datetime(2025, 1, 1, tzinfo=timezone.utc) + timedelta(minutes=minutes_offset),
-        symbol="BTCUSDT",
+        time=datetime(2025, 1, 1, tzinfo=UTC) + timedelta(minutes=minutes_offset),
+        symbol="AAPL",
         side=side,
         price=Decimal(price),
         quantity=Decimal("1"),
@@ -124,42 +123,42 @@ def test_consecutive_losses():
 
 def test_risk_free_rate_affects_sharpe():
     """Higher risk-free rate should lower Sharpe ratio."""
-    base = datetime(2025, 1, 1, tzinfo=timezone.utc)
+    base = datetime(2025, 1, 1, tzinfo=UTC)
     trades = [
         TradeRecord(
-            time=base, symbol="BTCUSDT", side="BUY", price=Decimal("100"), quantity=Decimal("1")
+            time=base, symbol="AAPL", side="BUY", price=Decimal("100"), quantity=Decimal("1")
         ),
         TradeRecord(
             time=base + timedelta(days=1),
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side="SELL",
             price=Decimal("110"),
             quantity=Decimal("1"),
         ),
         TradeRecord(
             time=base + timedelta(days=2),
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side="BUY",
             price=Decimal("105"),
             quantity=Decimal("1"),
         ),
         TradeRecord(
             time=base + timedelta(days=3),
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side="SELL",
             price=Decimal("115"),
             quantity=Decimal("1"),
         ),
         TradeRecord(
             time=base + timedelta(days=4),
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side="BUY",
             price=Decimal("110"),
             quantity=Decimal("1"),
         ),
         TradeRecord(
             time=base + timedelta(days=5),
-            symbol="BTCUSDT",
+            symbol="AAPL",
             side="SELL",
             price=Decimal("108"),
             quantity=Decimal("1"),
@@ -184,7 +183,7 @@ def test_daily_returns_populated():
 
 def test_fee_subtracted_from_pnl():
     """Fees should be subtracted from trade PnL."""
-    base = datetime(2025, 1, 1, tzinfo=timezone.utc)
+    base = datetime(2025, 1, 1, tzinfo=UTC)
     trades_with_fees = [
         TradeRecord(
             time=base,