"To test the software" means to check and evaluate the performance, functionality, and reliability of a computer program or application to ensure it works correctly and meets the desired requirements or expectations. Full definition
Test the software in order to make a proper idea about the same. (android.gs)
• Demonstrated expertise in testing software for reliability and stability, through implementation of quality assurance testing programs. (coverlettersandresume.com)
With the plethora of testing software out there it's easy to experiment with headlines and visuals to best determine what is working. (entrepreneur.com)