Capybara matchers in RSpec custom matcher

rspec_custom_matcher_capybara.rb

RSpec::Matchers.define :have_widget_elements_for do |widget|
  match do |actual|
    puts actual.to_yaml
    @errors = {}

    expected_elements = {
      :widget => ".widget",
      :content_type => ".#{widget.content_type}",
      :body => ".body",
      :title => ".title",
      :comment_count => ".comment_count",
      :toggle_facebook_comments => "a.toggle_facebook_comments[href='#']",
      :toolbox => ".toolbox",
      :content => ".content",
      :tags => ".tags"
    }

    error_prefix = "Can't find selector "
    expected_elements.each do |key, selector|
      puts have_selector(selector).inspect
      @errors[key] = error_prefix + selector unless have_selector(selector).matches?(actual)
    end

    @errors.empty?
  end


  failure_message_for_should do |actual|
    message = "expected #{actual} to have widget elements"
    message += "\n#{@errors.to_yaml}" unless @errors.empty?
    message
  end

  failure_message_for_should_not do |actual|
    message = "expected #{actual} to not have widget elements"
    message += "\n#{@errors.to_yaml}" unless @errors.empty?
    message
  end

  description do
    message = "has widget elements for #{widget}"
  end

end