Throughout this chapter we have built a miniature, but functional, catalog module. It allowed us to create, edit, and delete categories and products. By adding a few custom lines of code on top of the auto-generated CRUD, we were able to achieve image upload functionality for both categories and products. We also saw how to override the core module service, by simply removing the existing service definition and providing a new one. In regard to tests, we saw how we can pass the authentication along our requests to test for protected routes.

Moving forward, in the next chapter, we will build a customer module.