"undefined method " error when calling adoption_helper

[Matthew Middleton]

When I run the script that is supposed to call adoption_helper.rb, I get the following error message:

C:/Users/mmiddleton/git/CucumberAndCheese/CucumberAndCheese/adoption_helper.rb:4:in `goto_puppy_adoption_site': undefined method `goto' for nil:NilClass (NoMethodError)

from C:/Users/mmiddleton/git/CucumberAndCheese/CucumberAndCheese/adopt_puppies_with_helper.rb:7:in `<main>'

I copied the methods from the previous script, and pasted them in adoption_helper.rb, and copied the lines that call those methods in to a script I called adopt_puppies_with_helper.rb, so I know the spelling is correct. I'm pretty sure that I've capitalized the Module declaration and call correctly, so I can't figure out what's on the go. Below are the two scripts:

adoption_helper.rb

module AdoptionHelper

  

  def goto_puppy_adoption_site

    @browser.goto 'http://puppies.herokuapp.com'

  end

  

  def adopt_puppy_number(num)

    @browser.button(:value => 'View Details', :index => num - 1).click

    @browser.button(:value => 'Adopt Me!').click

  end

  

  def continue_adopting_puppies

    @browser.button(:value => 'Adopt Another Puppy').click

  end

  

  def checkout_with(name, address, email, pay_type)

    @browser.button(:value => 'Complete the Adoption').click

    @browser.text_field(:id => 'order_name').set(name)

    @browser.text_field(:id => 'order_address').set(address)

    @browser.text_field(:id => 'order_email').set(email)

    @browser.select_list(:id => 'order_pay_type').select(pay_type)

    @browser.button(:value => 'Place Order').click

  end

  

  def verify_page_contains(text)

    fail 'Browser text did not match expected value' unless @browser.text.include? text

  end

  

  def close_browser

    @browser.close

  end

end

adopt_puppies_with_helper.rb

require 'rubygems'

require 'watir-webdriver'

require_relative 'adoption_helper'

include AdoptionHelper

goto_puppy_adoption_site

adopt_puppy_number 1

continue_adopting_puppies

adopt_puppy_number 2

checkout_with('Cheezy', '123 Main St.', 'che...@foo.com', 'Check')

verify_page_contains 'Thank you for adopting a puppy!'

close_browser

[Matthew Middleton]

Thanks to some help from Jeff Morgan, I found the issue. I wasn't initializing the @browser variable. For those of us who aren't programmers by trade, another little tidbit - initialize the @browser variable in your main script, not your helper script.