Helper Methods

Common helper methods should be extracted to `spec/support`, where they can be
organized by utility and automatically included into a specific subset of the tests.

# spec/support/kaminari_helper.rb
module KaminariHelper
  def with_kaminari_per_page(value, &block)
    old_value = Kaminari.config.default_per_page
    Kaminari.config.default_per_page = value
    block.call
  ensure
    Kaminari.config.default_per_page = old_value
  end
end

RSpec.configure do |config|
  config.include KaminariHelper, type: :request
end