Add step definitions for buying book

Similarly, we are going to add "buy_book.rb" under "features/step_definations".

cd step_definations

touch buy_book.rb

Then edit it to contain following content:

# encoding: utf-8
Given /^I open "(.*?)"$/ do |site|
    @driver.get site
end

When /^I search for "(.*?)"$/ do |keyword|
    searchKeyword=@driver.find_element :id => "twotabsearchtextbox"
    searchKeyword.clear
    searchKeyword.send_keys keyword
    element=@driver.find_element :class =>"nav-submit-input"
    element.click
end
And /^I open the first book$/ do
    element=@driver.find_element :xpath => "//div[@id=\"result_0\"]//span[@class=\"lrg bold\"]"
    element.click
end
And /^I add the first book to shopping cart$/ do
    @bookTitle=@driver.find_element(:id => "productTitle").text
    element=@driver.find_element :name => "submit.add-to-cart"
    element.click
end
Then /^I should see the book in my shopping cart$/ do
    confirm=@driver.find_element :id => "confirm-text"
    confirm.text.include?("1 item added to Cart")
    book=@driver.find_element :xpath => "//div[@class=\"a-row a-size-base word-break\"]/a"
    book.attribute("title").should == @bookTitle
end

The # encoding: utf-8 here is to support multiple languages, if you just want to use English all the time and anywhere in your test, you can get rid of it.

If you need to change control to a new popuped window, you can use @driver.switch_to.window @driver.window_handles.last.