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Extracting a Ruby Gem
In this episode I show how to extract a Ruby Gem from an existing Rails application, test it with RSpec and Supermodel, and add a Railtie.
(16 minutes)
A Tour of State Machines
Here I show how three popular state machine gems can be used to clean up a list of boolean/datetime fields. I also show a custom solution which keeps track of the history of events.
(12 minutes)
Fast Tests
A slow test suite can put a damper on test-driven development. In this episode I show a variety of ways to optimize specs including: selective testing, preloading Rails, and testing outside of Rails.
(17 minutes)
Testing JavaScript with Jasmine (revised)
The jasminerice gem makes it easy to test your JavaScript with Jasmine in a Rails application. Here I also cover jasmine-jquery and guard-jasmine.
(11 minutes)
MiniTest with Rails
MiniTest is a fast and lightweight testing library. Here you will learn how to use it in a Rails app for model, helper, and integration testing. The Turn gem is also demonstrated for prettier test output.
(15 minutes)
Site-Wide Announcements (revised)
Here I show how to add an announcement message at the top of every page in the application and allow the user to permanently hide it. This is all done test-first and even includes testing the JavaScript behavior.
(11 minutes)
Testing Time & Web Requests
It can be difficult to test code that deals with the current time or an external web request. Here I show you how to do both using the Timecop and FakeWeb gems.
(8 minutes)
Testing JavaScript with PhantomJS
PhantomJS allows us to test JavaScript without going through a browser window. Here I show how to do this using Capybara and Poltergeist. I also give some tips on handling database transactions and skipping javascript tests.
(10 minutes)
How I Test
Here I show how I would add tests to the password reset feature created in the previous episode. I use RSpec, Capybara, Factory Girl, and Guard to make request, model, and mailer specs.
(15 minutes)
Spork
Spork improves the loading time of your test suite by starting up your Rails application once in the background. Use it with Guard for the ultimate combo in fast feedback while doing TDD.
(9 minutes)