As the industry moves more and more towards TDD and BDD, and the tools that enable automated verification of behaviour, it is tempting to test everything our system can do.

Do we need to test Drupal itself? Can we test our app without spending time and effort testing behaviour that is the responsibility of the Drupal core?

This talk will show strategies to decouple domain logic from a Drupal application, alongside approaches to testing that will enable teams to verify their code that adds business value, without the cost of testing core framework functionality.