[test][exection] Add kwargs to execute to be able to extend the configuration

beat/core/test/test_execution.py

@@ -89,7 +89,7 @@ class BaseExecutionMixIn(object):
         return data
 
 
-    def execute(self, label, expected_result):
+    def execute(self, label, expected_result, **kwargs):
         """Executes the full experiment, block after block, returning results. If an
         error occurs, returns information about the err'd block. Otherwise, returns
         ``None``.
@@ -117,8 +117,9 @@ class BaseExecutionMixIn(object):
         # can we execute it?
         results = []
         for key, value in scheduled.items():
+            configuration = {**value['configuration'], **kwargs}
 
-            executor = self.create_executor(prefix, value['configuration'], tmp_prefix,
+            executor = self.create_executor(prefix, configuration, tmp_prefix,
                                             dataformat_cache, database_cache, algorithm_cache)
             assert executor.valid, '\n  * %s' % '\n  * '.join(executor.errors)