Combine Pry and RSpec

RSpec provides a way for you to register aliases for the methods you use to create your specs. You can alias these methods and tie them into predefined hooks using metadata.

For example, let's say we wanted to have run pry whenever a spec includes some metadata like: `pry: true`. Instead of adding `pry: true` after each spec, we can add an alias by doing the following:

```ruby
RSpec.configure do |config|
  config.alias_example_group_to :pdescribe, pry: true
  config.alias_example_to       :pit,       pry: true

  config.after(:example, pry: true) do |e|
    require 'pry'
    binding.pry
  end
end
```

We've registered 2 aliases. Whenever we prepend `p` onto a method's name, we'll now get the same functionality as adding `pry: true` to our spec's metadata.

We've tied this alias into an `after` hook. This hook only runs when pry is set to true in the spec's metadata. RSpec after hooks always run, even if the spec fails!

Simply prepend `p` to a spec and pry will run once the spec is finished!

We've now created a powerful pry alias to debug our specs in RSpec :) 

douglasgreyling
January 24, 2022