Agile Web Development with Rails 5, 1st Edition

Iteration H2: Integration Testing of Applications

Rails organizes tests into model, controller, and integration tests. Before explaining integration tests, let’s briefly recap what we’ve covered so far.

Unit testing of models

Model classes contain business logic. For example, when we add a product to a cart, the cart model class checks to see if that product is already in the cart’s list of items. If so, it increments the quantity of that item; if not, it adds a new item for that product.

Functional testing of controllers

Controllers direct the show. They receive incoming web requests (typically, user input), interact with models to gather application state, and then respond by causing the appropriate view to display something to the user. ...