test: add Test-case to ensure hyperopt logging

tests/optimize/test_hyperopt.py

@@ -1132,7 +1132,9 @@ def test_in_strategy_auto_hyperopt(mocker, hyperopt_conf, tmp_path, fee) -> None
 
 
 @pytest.mark.filterwarnings("ignore::DeprecationWarning")
-def test_in_strategy_auto_hyperopt_with_parallel(mocker, hyperopt_conf, tmp_path, fee) -> None:
+def test_in_strategy_auto_hyperopt_with_parallel(
+    mocker, hyperopt_conf, tmp_path, fee, caplog
+) -> None:
     mocker.patch(f"{EXMS}.validate_config", MagicMock())
     mocker.patch(f"{EXMS}.get_fee", fee)
     mocker.patch(f"{EXMS}.reload_markets")
@@ -1175,6 +1177,8 @@ def test_in_strategy_auto_hyperopt_with_parallel(mocker, hyperopt_conf, tmp_path
     assert len(list(buy_rsi_range)) == 51
 
     hyperopt.start()
+    # Test logs from parallel workers are shown.
+    assert log_has("Test: Bot loop started", caplog)
 
 
 def test_in_strategy_auto_hyperopt_per_epoch(mocker, hyperopt_conf, tmp_path, fee) -> None:

tests/strategy/strats/hyperoptable_strategy.py

@@ -1,5 +1,7 @@
 # pragma pylint: disable=missing-docstring, invalid-name, pointless-string-statement
 
+import logging
+
 from pandas import DataFrame
 from strategy_test_v3 import StrategyTestV3
 
@@ -7,6 +9,9 @@ import freqtrade.vendor.qtpylib.indicators as qtpylib
 from freqtrade.strategy import BooleanParameter, DecimalParameter, IntParameter, RealParameter
 
 
+logger = logging.getLogger(__name__)
+
+
 class HyperoptableStrategy(StrategyTestV3):
     """
     Default Strategy provided by freqtrade bot.
@@ -55,6 +60,7 @@ class HyperoptableStrategy(StrategyTestV3):
 
     def bot_loop_start(self, **kwargs):
         self.bot_loop_started = True
+        logger.info("Test: Bot loop started")
 
     def bot_start(self, **kwargs) -> None:
         self.bot_started = True