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A lot of Ruby code is "magic". We'll explain the magic and see how it works using the powerful tools Ruby gives us.
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If we want to add realtime tracking of which users are online, we can use active websocket connections through ActionCable to keep track.
We can use timestamps in our database to track of online users in your Rails
Learn how to implement Uppy as a frontend for uploading files via drag and drop, paste, URL, Google Drive, Dropbox, webcam and more to Active Storage in Rails
Ever wanted an editor and Rails environment you can use anywhere? Cloud9 is the perfect option for this and can run on an EC2 instance in your AWS account.
Mocks are a handy tool for writing tests in Ruby. You can use them to fake an object and verify that the correct methods were called against it. Perfect for testing a method that integrates closely with another class or module.
Dependency Injection is a common technique for making your code more flexible and testable by removing strict dependencies upon other classes, modules, and other types of dependencies in your code
Test stubs are very handy when you want to mock out the response to a method call. This allows your tests to be more reliable and skip long running or unnecessary method calls.
Test suites often become brittle over time where small changes end up breaking various tests. One way to avoid that is by avoiding using hardcoded values in your test suite.
Today we're refactoring Andrew Mason's GitHub Action that runs Rubocop against your repository. We'll pull out some concepts, remove conditionals, and use several other techniques to clean up the code.
Testing ActionCable authentication with Devise is pretty easy, especially when we build our own helpers to stub out Warden
Rails provides several really useful test helpers for ActionMailer so we can quickly iterate on our design, test that our code queues up the right emails, and make sure our emails contain the right content.
Rails provides several helper methods for testing times and dates in your applications. You can now freeze time and time travel like in the movies!
Learn how to test Active Job in your Ruby on Rails application
Testing integrations with external APIs in your Rails app can be hard. You don't know what requests are being made (or even the responses), so how can you properly mock them out? VCR to the rescue.
Learn how to set up GitHub Actions to run Continuous Integration (CI) with Ruby on Rails
Learn how to write integration tests in Rails to test controllers and actions
Adding Devise test helpers allows you to quickly login a user for testing controllers in Rails
You can use Fixtures in Rails to create sample database records for your tests to run against. They're easy to setup and extremely quick.
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