refactor: tests - update timezone.utc to UTC

tests/persistence/test_key_value_store.py

@@ -1,4 +1,4 @@
-from datetime import datetime, timedelta, timezone
+from datetime import UTC, datetime, timedelta
 
 import pytest
 
@@ -8,19 +8,19 @@ from tests.conftest import create_mock_trades_usdt
 
 @pytest.mark.usefixtures("init_persistence")
 def test_key_value_store(time_machine):
-    start = datetime(2023, 1, 1, 4, tzinfo=timezone.utc)
+    start = datetime(2023, 1, 1, 4, tzinfo=UTC)
     time_machine.move_to(start, tick=False)
 
     KeyValueStore.store_value("test", "testStringValue")
-    KeyValueStore.store_value("test_dt", datetime.now(timezone.utc))
+    KeyValueStore.store_value("test_dt", datetime.now(UTC))
     KeyValueStore.store_value("test_float", 22.51)
     KeyValueStore.store_value("test_int", 15)
 
     assert KeyValueStore.get_value("test") == "testStringValue"
     assert KeyValueStore.get_value("test") == "testStringValue"
     assert KeyValueStore.get_string_value("test") == "testStringValue"
-    assert KeyValueStore.get_value("test_dt") == datetime.now(timezone.utc)
-    assert KeyValueStore.get_datetime_value("test_dt") == datetime.now(timezone.utc)
+    assert KeyValueStore.get_value("test_dt") == datetime.now(UTC)
+    assert KeyValueStore.get_datetime_value("test_dt") == datetime.now(UTC)
     assert KeyValueStore.get_string_value("test_dt") is None
     assert KeyValueStore.get_float_value("test_dt") is None
     assert KeyValueStore.get_int_value("test_dt") is None
@@ -31,11 +31,11 @@ def test_key_value_store(time_machine):
     assert KeyValueStore.get_datetime_value("test_int") is None
 
     time_machine.move_to(start + timedelta(days=20, hours=5), tick=False)
-    assert KeyValueStore.get_value("test_dt") != datetime.now(timezone.utc)
+    assert KeyValueStore.get_value("test_dt") != datetime.now(UTC)
     assert KeyValueStore.get_value("test_dt") == start
     # Test update works
-    KeyValueStore.store_value("test_dt", datetime.now(timezone.utc))
-    assert KeyValueStore.get_value("test_dt") == datetime.now(timezone.utc)
+    KeyValueStore.store_value("test_dt", datetime.now(UTC))
+    assert KeyValueStore.get_value("test_dt") == datetime.now(UTC)
 
     KeyValueStore.store_value("test_float", 23.51)
     assert KeyValueStore.get_value("test_float") == 23.51
@@ -52,7 +52,7 @@ def test_key_value_store(time_machine):
 @pytest.mark.usefixtures("init_persistence")
 def test_set_startup_time(fee, time_machine):
     create_mock_trades_usdt(fee)
-    start = datetime.now(timezone.utc)
+    start = datetime.now(UTC)
     time_machine.move_to(start, tick=False)
     set_startup_time()