Serverspec to xml file

hadoop_spec.rb

require 'serverspec'
require 'nokogiri'

describe file('/etc/hadoop/hadoop-0.20.2/conf/mapred-site.xml') do
  it { should be_file }
  it do
    doc = Nokogiri::Slop(subject.content)
    doc.configuration.each do |property|
      case property.name.content
      when 'mapred.child.java.opts'
        property.value.content.should eq '-Xmx1024m'
      when 'mapred.map.tasks'
        property.value.content.should eq '3'
      when 'mapred.reduce.tasks'
        property.value.content.should eq '1'
      when 'mapred.tasktracker.map.tasks.maximum'
        property.value.content.should eq '3'
      when 'mapred.tasktracker.reduce.tasks.maximum'
        property.value.content.should eq '1'
      end
    end
  end
end