Store initial_time value

tests/persistence/test_key_value_store.py

@@ -2,7 +2,8 @@ from datetime import datetime, timedelta, timezone
 
 import pytest
 
-from freqtrade.persistence.key_value_store import KeyValueStore
+from freqtrade.persistence.key_value_store import KeyValueStore, set_startup_time
+from tests.conftest import create_mock_trades_usdt
 
 
 @pytest.mark.usefixtures("init_persistence")
@@ -37,3 +38,23 @@ def test_key_value_store(time_machine):
 
     with pytest.raises(ValueError, match=r"Unknown value type"):
         KeyValueStore.store_value("test_float", {'some': 'dict'})
+
+
+@pytest.mark.usefixtures("init_persistence")
+def test_set_startup_time(fee, time_machine):
+    create_mock_trades_usdt(fee)
+    start = datetime.now(timezone.utc)
+    time_machine.move_to(start, tick=False)
+    set_startup_time()
+
+    assert KeyValueStore.get_value("startup_time") == start
+    initial_time = KeyValueStore.get_value("bot_start_time")
+    assert initial_time <= start
+
+    # Simulate bot restart
+    new_start = start + timedelta(days=5)
+    time_machine.move_to(new_start, tick=False)
+    set_startup_time()
+
+    assert KeyValueStore.get_value("startup_time") == new_start
+    assert KeyValueStore.get_value("bot_start_time") == initial_time