return empty strnig in mock_run_command_side_effect

Signed-off-by: Stepan Blyshchak <[email protected]>

tests/config_test.py

@@ -24,9 +24,12 @@
 def mock_run_command_side_effect(*args, **kwargs):
     command = args[0]
 
-    if 'display_cmd' in kwargs and kwargs['display_cmd'] == True:
+    if kwargs.get('display_cmd'):
         click.echo(click.style("Running command: ", fg='cyan') + click.style(command, fg='green'))
 
+    if kwargs.get('return_cmd'):
+        return ''
+
 
 class TestLoadMinigraph(object):
     @classmethod