zapier_home_page_spec.rb

require 'page-object'
require 'rspec'
require 'rest-client'

class ZapierHomePage
  include PageObject

  page_url("https://zapier.com")
  div :header_logo, css: '.header__logo'
end

describe 'On Zapier Home Page' do
  before(:all) do
    browser = Watir::Browser.new :chrome
    @home_page = ZapierHomePage.new(browser)
    @home_page.goto
  end

  it 'have valid header image' do
    url_propery = @home_page.header_logo_element.when_visible(10).style 'background-image'
    puts url = URI.extract(url_propery)[0]

    # depending on requirements one of next asserts could be used.
    expect(url).not_to be_nil
    expect(url[-3..-1]).to eql 'png'
    resp = RestClient.get(url)
    expect(resp.code).to eq 200
  end
end