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Mocks are a handy tool for ...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
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 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.
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
Learn how to set up GitHub Actions to run Continuous Integration (CI) with Ruby on Rails
Adding Devise test helpers allows you to quickly login a user for testing controllers in Rails
Learn how to write tests for validations on ActiveRecord objects in Ruby on Rails
With Rails 6.0, you can now define multiple primary and replica databases, define separate migrations for each primary database, and configure each model to read and write from different databases.
Learn how to remove conditionals and make your code simpler and more reliable using Ruby and ActiveSupport's Array wrap methods
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