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Bulletproof Ruby on Rails Applications

Passing the Request Test

Explore how to pass request tests by debugging the registrations controller in Rails. Understand parameter permissions, strong parameters, and status code handling to ensure your tests accurately reflect application behavior. This lesson guides you through solving common request test failures and adjusting expectations for realistic outcomes.

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Why did the test fail?

Now, we need to find out why the test is failing.

We could look at the test.log file, but it’s of no help in this case. So, we’ll have to check out the registrations controller. To do that, we’’ll use the generator that Devise provides.

$ rails g devise:controllers users -c=registrations
create  app/controllers/users/registrations_controller.rb

The generator also gives us some code to add into our config/routes.rb file.

Ruby
Rails.application.routes.draw do
  devise_for :users, controllers: {
    registrations: 'users/registrations'
  }
  root "site#index"
end

It’s now a lot easier to see what happens with the request.

Let’s uncomment the create action in the registrations controller and add a breakpoint (with pry).

Ruby
def create
  require "pry"; binding.pry
  super
end

The test should now ...