Add tests for cancel_order_with_result

freqtrade/exchange/exchange.py

@@ -937,6 +937,36 @@ class Exchange:
         except ccxt.BaseError as e:
             raise OperationalException(e) from e
 
+    def is_cancel_order_result_suitable(self, corder) -> bool:
+        if not isinstance(corder, dict):
+            return False
+
+        required = ('fee', 'status', 'amount')
+        return all(k in corder for k in required)
+
+    def cancel_order_with_result(self, order_id: str, pair: str, amount: float) -> Dict:
+        """
+        Cancel order returning a result.
+        Creates a fake result if cancel order returns a non-usable result
+        and get_order does not work (certain exchanges don't return cancelled orders)
+        :param order_id: Orderid to cancel
+        :param pair: Pair corresponding to order_id
+        :param amount: Amount to use for fake response
+        :return: Result from either cancel_order if usable, or fetch_order
+        """
+        if self._config['dry_run']:
+            return {'fee': {}, 'status': 'canceled', 'amount': amount, 'info': {}}
+        corder = self.cancel_order(order_id, pair)
+        if self.is_cancel_order_result_suitable(corder):
+            return corder
+        try:
+            order = self.get_order(order_id, pair)
+        except InvalidOrderException:
+            logger.warning(f"Could not fetch cancelled order {order_id}.")
+            order = {'fee': {}, 'status': 'canceled', 'amount': amount, 'info': {}}
+
+        return order
+
     @retrier
     def get_order(self, order_id: str, pair: str) -> Dict:
         if self._config['dry_run']: