Improve api response

freqtrade/rpc/api_server.py

@@ -431,6 +431,10 @@ class ApiServer(RPC):
     def _trades_delete(self, tradeid):
         """
         Handler for DELETE /trades/<tradeid> endpoint.
+        Removes the trade from the database (tries to cancel open orders first!)
+        get:
+          param:
+            tradeid: Numeric trade-id assigned to the trade.
         """
         result = self._rpc_delete(tradeid)
         return self.rest_dump(result)

tests/rpc/test_rpc_apiserver.py

@@ -385,31 +385,42 @@ def test_api_trades(botclient, mocker, fee, markets):
 def test_api_delete_trade(botclient, mocker, fee, markets):
     ftbot, client = botclient
     patch_get_signal(ftbot, (True, False))
+    stoploss_mock = MagicMock()
+    cancel_mock = MagicMock()
     mocker.patch.multiple(
         'freqtrade.exchange.Exchange',
-        markets=PropertyMock(return_value=markets)
+        markets=PropertyMock(return_value=markets),
+        cancel_order=cancel_mock,
+        cancel_stoploss_order=stoploss_mock,
     )
     rc = client_delete(client, f"{BASE_URI}/trades/1")
     # Error - trade won't exist yet.
     assert_response(rc, 502)
 
     create_mock_trades(fee)
+    ftbot.strategy.order_types['stoploss_on_exchange'] = True
     trades = Trade.query.all()
+    trades[1].stoploss_order_id = '1234'
     assert len(trades) > 2
 
     rc = client_delete(client, f"{BASE_URI}/trades/1")
     assert_response(rc)
-    assert rc.json['result_msg'] == 'Deleted trade 1.'
+    assert rc.json['result_msg'] == 'Deleted trade 1. Closed 1 open orders.'
     assert len(trades) - 1 == len(Trade.query.all())
+    assert cancel_mock.call_count == 1
 
+    cancel_mock.reset_mock()
     rc = client_delete(client, f"{BASE_URI}/trades/1")
     # Trade is gone now.
     assert_response(rc, 502)
+    assert cancel_mock.call_count == 0
+
     assert len(trades) - 1 == len(Trade.query.all())
     rc = client_delete(client, f"{BASE_URI}/trades/2")
     assert_response(rc)
-    assert rc.json['result_msg'] == 'Deleted trade 2.'
+    assert rc.json['result_msg'] == 'Deleted trade 2. Closed 2 open orders.'
     assert len(trades) - 2 == len(Trade.query.all())
+    assert stoploss_mock.call_count == 1
 
 
 def test_api_edge_disabled(botclient, mocker, ticker, fee, markets):