In this episode of Kentico Rocks, Brian McKeiver interviews Ondrej Polesny, Kentico Kontent, developer evangelist, and Michal Vanzura, lead QA engineer on Kentico EMS. Brian, Ondrej, and Michal discuss the value of unit testing for software developers, what's the difference between unit testing, integration testing, and functional testing, and review a few options for performing JavaScript based testing with Jest and Cypress.io.