add fixes for random test failures

freqtrade/optimize/hyperopt.py

@@ -61,7 +61,7 @@ class Hyperopt:
     """
     Hyperopt class, this class contains all the logic to run a hyperopt simulation
 
-    To run a backtest:
+    To start a hyperopt run:
     hyperopt = Hyperopt(config)
     hyperopt.start()
     """

tests/optimize/conftest.py

@@ -6,6 +6,7 @@ import pandas as pd
 import pytest
 
 from freqtrade.enums import ExitType, RunMode
+from freqtrade.optimize.backtesting import Backtesting
 from freqtrade.optimize.hyperopt import Hyperopt
 from tests.conftest import patch_exchange
 
@@ -28,6 +29,13 @@ def hyperopt_conf(default_conf):
     return hyperconf
 
 
+@pytest.fixture(autouse=True)
+def backtesting_cleanup() -> None:
+    yield None
+
+    Backtesting.cleanup()
+
+
 @pytest.fixture(scope='function')
 def hyperopt(hyperopt_conf, mocker):
 

tests/optimize/test_backtesting.py

@@ -52,13 +52,6 @@ def trim_dictlist(dict_list, num):
     return new
 
 
-@pytest.fixture(autouse=True)
-def backtesting_cleanup() -> None:
-    yield None
-
-    Backtesting.cleanup()
-
-
 def load_data_test(what, testdatadir):
     timerange = TimeRange.parse_timerange('1510694220-1510700340')
     data = history.load_pair_history(pair='UNITTEST/BTC', datadir=testdatadir,