Add return-type for select_order

freqtrade/persistence/models.py

@@ -520,7 +520,7 @@ class Trade(_DECL_BASE):
         profit_ratio = (close_trade_price / self.open_trade_price) - 1
         return float(f"{profit_ratio:.8f}")
 
-    def select_order(self, order_side: str, status: Optional[str]):
+    def select_order(self, order_side: str, status: Optional[str]) -> Optional[Order]:
         """
         Returns latest order for this orderside and status
         Returns None if nothing is found

tests/conftest_trades.py

@@ -108,9 +108,10 @@ def mock_order_3_sell():
         'id': '41231a666a',
         'symbol': 'XRP/BTC',
         'status': 'closed',
-        'side': 'stop_loss',
-        'type': 'limit',
+        'side': 'sell',
+        'type': 'stop_loss_limit',
         'price': 0.06,
+        'average': 0.06,
         'amount': 123.0,
         'filled': 123.0,
         'remaining': 0.0,