test_xml.rb

require 'rubygems'
require 'builder'

favorites = {
  'candy' => 'Neccos', 'novel' => 'Empire of the Sun', 'holiday' => 'Easter'
}

xml = Builder::XmlMarkup.new(:indent => 2 ) do |b|

  b.instruct! :xml, :version => "1.1", :encoding => "UTF-8"

  b.favorites do 
   favorites.each do | name, choice |
    b.favorite( choice, :item => name )
   end
  end
end

puts xml


# Running this command with ruby test_xml.rb gives:
# test_xml.rb:20:in `puts': Builder::XmlMarkup#to_ary should return Array (TypeError)
# 	from test_xml.rb:20