2.5. REAL-LIFE EXAMPLE

We are going to write unit tests for a controller of a fictitious MVC framework and demonstrate how decoupling of code and reducing dependencies increase the testability. Some refactorings will almost magically make the code much easier to test.

We want to test a method of an MVC controller that is responsible for the first step to resetting a user's password. An e-mail containing a URL to visit is sent to the user. The URL contains a random code. In the second step, which we don't show, a new password is generated and transmitted after the given URL has been visited.