Create Acceptance Tests or Feature Tests to extend your automated tests with browser testing. It can help tests some areas that cannot be reached with other types of tests.

Using RSpec, learn how to create tests for your application and view your coverage.

Using the Rails 5.1.X defaults, we have a look at what is configured and explore the different types of tests; using the provided MiniTest and Capybara.

Gems are a packaged library of functions that can extend your application or provide other features to your system. Learn to create and publish a ruby gem.

Advancing from Single Table Inheritance, learn how Polymorphic Associations differ and tricks to simplify their usage.