In this chapter, we're going to repeat the login and registration phases we already did for the AuthSample app a short while ago. However, this time, we'll do the login first, since we already have some existing users thanks to the CreateDefaultUsers() method of SeedController.
Launch the WorldCities app in debug mode by hitting F5. Once done, navigate to the login screen and insert the email and password of one of our existing users.
If we did everything correctly, we should see a screen like the one shown in the following screenshot:
Right after that, ...