Rewrote trials unit tests.

examples/parallel/plot_streaming_pipeline.py

@@ -52,7 +52,7 @@
 def eval_run_time(pipeline: BasePipeline):
     pipeline.setup()
     a = time.time()
-    output = pipeline.transform(list(range(200)))
+    output = pipeline.transform(list(range(100)))
     b = time.time()
     seconds = b - a
     return seconds, output

neuraxle/metaopt/trial.py

@@ -90,8 +90,11 @@ def __init__(
         self.start_time: datetime.datetime = start_time
         self.end_time: datetime.datetime = end_time
 
-        if logger is None and self.cache_folder is not None:
-            logger = self._initialize_logger_with_file()
+        if logger is None:
+            if self.cache_folder is not None:
+                logger = self._initialize_logger_with_file()
+            else:
+                logger = logging.getLogger()
         self.logger: Logger = logger
 
     def save_trial(self) -> 'Trial':
@@ -732,11 +735,9 @@ def get_best_trial(self) -> Trial:
         if len(self) == 0:
             raise Exception('Could not get best trial because there were no successful trial.')
 
-        higher_score_is_better = self.trials[-1].is_higher_score_better()
-
         for trial in self.trials:
             trial_score = trial.get_validation_score()
-            if best_score is None or higher_score_is_better == (trial_score > best_score):
+            if best_score is None or self.trials[-1].is_higher_score_better() == (trial_score > best_score):
                 best_score = trial_score
                 best_trial = trial