Adding tests for get_from_cache
Adding tests for get_from_cache

Since this method didn't have any tests yet, I added some for the
existing functionality.

nkammah/deployinator,nkammah/deployinator,nkammah/deployinator,cyberrodent/deployinator,mpgarate/deployinator,etsy/deployinator,friedenberg/deployinator,mpgarate/deployinator,jdycar/deployinator,etsy/deployinator,rvml/deployinator,friedenberg/deployinator,mpgarate/deployinator,cyberrodent/deployinator,jdycar/deployinator,etsy/deployinator,cyberrodent/deployinator,jdycar/deployinator,friedenberg/deployinator,rvml/deployinator,rvml/deployinator