Disallow VolumePairList from backtesting for now

freqtrade/optimize/backtesting.py

@@ -65,6 +65,9 @@ class Backtesting:
         self.exchange = ExchangeResolver.load_exchange(self.config['exchange']['name'], self.config)
 
         self.pairlists = PairListManager(self.exchange, self.config)
+        if 'VolumePairList' in self.pairlists.name_list:
+            raise OperationalException("VolumePairList not allowed for backtesting.")
+
         self.pairlists.refresh_pairlist()
 
         if len(self.pairlists.whitelist) == 0:

tests/optimize/test_backtesting.py

@@ -378,9 +378,7 @@ def test_backtesting_start_no_data(default_conf, mocker, caplog, testdatadir) ->
 
 
 def test_backtesting_no_pair_left(default_conf, mocker, caplog, testdatadir) -> None:
-    def get_timerange(input1):
-        return Arrow(2017, 11, 14, 21, 17), Arrow(2017, 11, 14, 22, 59)
-
+    mocker.patch('freqtrade.exchange.Exchange.exchange_has', MagicMock(return_value=True))
     mocker.patch('freqtrade.data.history.history_utils.load_pair_history',
                  MagicMock(return_value=pd.DataFrame()))
     mocker.patch('freqtrade.data.history.get_timerange', get_timerange)
@@ -397,6 +395,10 @@ def test_backtesting_no_pair_left(default_conf, mocker, caplog, testdatadir) ->
     with pytest.raises(OperationalException, match='No pair in whitelist.'):
         Backtesting(default_conf)
 
+    default_conf['pairlists'] = [{"method": "VolumePairList", "number_assets": 5}]
+    with pytest.raises(OperationalException, match='VolumePairList not allowed for backtesting.'):
+        Backtesting(default_conf)
+
 
 def test_backtest(default_conf, fee, mocker, testdatadir) -> None:
     default_conf['ask_strategy']['use_sell_signal'] = False