If you have a license, it is possible to use gmtool to run automated tests. See GMTool userguide.
However, Genymotion Desktop is not optimal to perform automation tests: such usage may cause instability issues due to VirtualBox and the host hardware limitations.
For this reason, we have developed Genymotion Cloud PaaS and Genymotion SaaS for such usage.
Please visit https://www.genymotion.com/cloud/ for more information.