How to Include Rails views helper in Capybara steps

Question

I have a step definition:

Then(/^I should see the total price of the products$/) do
  # assumes all existing products are in the cart
  total = Product.find(:all).inject { |sum, p| sum + p.price }
  page.find(".total").should have_content number_to_currency(total)
end

This blows up with undefined method 'number_to_currency' for #<Cucumber::Rails::World:0xbef8d18> (NoMethodError)

I could emulate the "total" by emulating the behaviour of the number_to_currency helper, but I'd rather re-use the helper from Rails, because in this step I am not interested in the formatting, just that the total is calculated and rendered.

How do I include the NumberHelper or any view helper in capybara for access from step definitions?

Possible duplicate of http://stackoverflow.com/questions/9445410/how-to-include-rails-helpers-on-rspec — Marcelo De Polli, Apr 16 '13 at 12:57
Probably not: the linked Q and A are specific for rspec, yet I need to include the helpers in cucumber stepdefs; — berkes, Apr 16 '13 at 14:12
That's fine. I didn't flag the question as I was waiting for your comment. :) — Marcelo De Polli, Apr 16 '13 at 14:22

score 5 · Accepted Answer · answered May 09 '14 at 02:03

The way I include helper into my cucumber testing here:

You create a file world.rb (or any name you want) under support folder. In my world.rb I define like this:

module Helper

   include ProjectHelper
   include ProductBacklogHelper
   include ApplicationHelper
   include Capybara::DSL
   include Prickle::Capybara 

end #end Module  
World(Helper)

You should include the helper file that has "number_to_currency" function in world.rb

I hope this will help you

How to Include Rails views helper in Capybara steps

1 Answers1