minor: Cleanup for backtesting

freqtrade/configuration/configuration.py

@@ -217,7 +217,7 @@ class Configuration:
                              deprecated_msg='-r/--refresh-pairs-cached will be removed soon.')
 
         self._args_to_config(config, argname='strategy_list',
-                             logstring='Using strategy list of {} Strategies', logfun=len)
+                             logstring='Using strategy list of {} strategies', logfun=len)
 
         self._args_to_config(config, argname='ticker_interval',
                              logstring='Overriding ticker interval with Command line argument')
@@ -238,7 +238,7 @@ class Configuration:
 
         # Hyperopt section
         self._args_to_config(config, argname='hyperopt',
-                             logstring='Using Hyperopt file {}')
+                             logstring='Using Hyperopt class name: {}')
 
         self._args_to_config(config, argname='hyperopt_path',
                              logstring='Using additional Hyperopt lookup path: {}')
@@ -276,7 +276,7 @@ class Configuration:
                              logstring='Hyperopt continue: {}')
 
         self._args_to_config(config, argname='hyperopt_loss',
-                             logstring='Using loss function: {}')
+                             logstring='Using Hyperopt loss class name: {}')
 
     def _process_plot_options(self, config: Dict[str, Any]) -> None:
 

freqtrade/optimize/backtesting.py

@@ -95,8 +95,6 @@ class Backtesting:
         Load strategy into backtesting
         """
         self.strategy = strategy
-        self.advise_buy = strategy.advise_buy
-        self.advise_sell = strategy.advise_sell
         # Set stoploss_on_exchange to false for backtesting,
         # since a "perfect" stoploss-sell is assumed anyway
         # And the regular "stoploss" function would not apply to that case
@@ -219,8 +217,8 @@ class Backtesting:
         for pair, pair_data in processed.items():
             pair_data['buy'], pair_data['sell'] = 0, 0  # cleanup from previous run
 
-            ticker_data = self.advise_sell(
-                self.advise_buy(pair_data, {'pair': pair}), {'pair': pair})[headers].copy()
+            ticker_data = self.strategy.advise_sell(
+                self.strategy.advise_buy(pair_data, {'pair': pair}), {'pair': pair})[headers].copy()
 
             # to avoid using data from future, we buy/sell with signal from previous candle
             ticker_data.loc[:, 'buy'] = ticker_data['buy'].shift(1)

freqtrade/optimize/hyperopt.py

@@ -49,10 +49,11 @@ class Hyperopt:
     """
     def __init__(self, config: Dict[str, Any]) -> None:
         self.config = config
-        self.backtesting = Backtesting(self.config)
 
         self.custom_hyperopt = HyperOptResolver(self.config).hyperopt
 
+        self.backtesting = Backtesting(self.config)
+
         self.custom_hyperoptloss = HyperOptLossResolver(self.config).hyperoptloss
         self.calculate_loss = self.custom_hyperoptloss.hyperopt_loss_function
 
@@ -77,9 +78,11 @@ class Hyperopt:
             self.backtesting.strategy.advise_indicators = \
                     self.custom_hyperopt.populate_indicators  # type: ignore
         if hasattr(self.custom_hyperopt, 'populate_buy_trend'):
-            self.backtesting.advise_buy = self.custom_hyperopt.populate_buy_trend  # type: ignore
+            self.backtesting.strategy.advise_buy = \
+                    self.custom_hyperopt.populate_buy_trend  # type: ignore
         if hasattr(self.custom_hyperopt, 'populate_sell_trend'):
-            self.backtesting.advise_sell = self.custom_hyperopt.populate_sell_trend  # type: ignore
+            self.backtesting.strategy.advise_sell = \
+                    self.custom_hyperopt.populate_sell_trend  # type: ignore
 
         # Use max_open_trades for hyperopt as well, except --disable-max-market-positions is set
         if self.config.get('use_max_market_positions', True):
@@ -259,13 +262,16 @@ class Hyperopt:
         """
         params = self.get_args(_params)
         if self.has_space('roi'):
-            self.backtesting.strategy.minimal_roi = self.custom_hyperopt.generate_roi_table(params)
+            self.backtesting.strategy.minimal_roi = \
+                    self.custom_hyperopt.generate_roi_table(params)
 
         if self.has_space('buy'):
-            self.backtesting.advise_buy = self.custom_hyperopt.buy_strategy_generator(params)
+            self.backtesting.strategy.advise_buy = \
+                    self.custom_hyperopt.buy_strategy_generator(params)
 
         if self.has_space('sell'):
-            self.backtesting.advise_sell = self.custom_hyperopt.sell_strategy_generator(params)
+            self.backtesting.strategy.advise_sell = \
+                    self.custom_hyperopt.sell_strategy_generator(params)
 
         if self.has_space('stoploss'):
             self.backtesting.strategy.stoploss = params['stoploss']

freqtrade/resolvers/hyperopt_resolver.py

@@ -38,11 +38,11 @@ class HyperOptResolver(IResolver):
         IHyperOpt.ticker_interval = str(config['ticker_interval'])
 
         if not hasattr(self.hyperopt, 'populate_buy_trend'):
-            logger.warning("Custom Hyperopt does not provide populate_buy_trend. "
-                           "Using populate_buy_trend from DefaultStrategy.")
+            logger.warning("Hyperopt class does not provide populate_buy_trend() method. "
+                           "Using populate_buy_trend from the strategy.")
         if not hasattr(self.hyperopt, 'populate_sell_trend'):
-            logger.warning("Custom Hyperopt does not provide populate_sell_trend. "
-                           "Using populate_sell_trend from DefaultStrategy.")
+            logger.warning("Hyperopt class does not provide populate_sell_trend() method. "
+                           "Using populate_sell_trend from the strategy.")
 
     def _load_hyperopt(
             self, hyperopt_name: str, config: Dict, extra_dir: Optional[str] = None) -> IHyperOpt: