Workflow testing: Enroll Test Contact or make testing better

When testing a WorkFlow using the 'Test* button you are not able to 'Act out' different scenarios to see of your different actions/components of the WorkFlow is working as intended. 
To test this, I have enrolled test-subjects/contact from fictional contacts to make sure everything is okay. After I have done my testing, these actions should not be part of the WorkFlow. But I am not able to delete my history in the WorkFlow. 
Only option is to create a copy and delete this workflow. 


1. Be able to delete history or contact(+ actions) to take out testing analysis of the WorkFlow performance. 
2. Create a better testing environment for the workflow, where you can enroll test contact(s), if you switch on "Test".