Normalize all JUnit formatted .xml files in the specified folder

normalize_xml.rb

def normalize_xml(folder)

  xml_files = []
  Dir.entries(folder).each do |element|
    xml_files << "#{folder}/#{element}" if element.end_with?(".xml")
  end

  merged_files = {}

  xml_files.each do |xml_file|

    merged_files[xml_file] = []
    file   = File.new(xml_file)
    number = 1
    result = ""

    file.each_line do |line|
      if line.start_with? "<?xml"
        if !result.empty?
          new_file_name = xml_file.gsub(".xml", ".#{number}.xml")
          merged_files[xml_file] << new_file_name
          new_file = File.new(new_file_name, "w")
          new_file.write(result)
          new_file.close
          number += 1
        end
        result = ""
      end
      result << line
    end

    new_file_name = xml_file.gsub(".xml", ".#{number}.xml")
    merged_files[xml_file] << new_file_name
    new_file = File.new(new_file_name, "w")
    new_file.write(result)
    new_file.close

    File.delete(xml_file)

  end

  merged_files.each do |merged_file, files_to_merge|

    errors   = 0
    failures = 0
    skipped  = 0
    tests    = 0
    time     = 0
    cases    = []

    files_to_merge.each do |file|

      # Add up the attributes
      temp = File.new(file)
      xdoc = Nokogiri::XML(temp)
      xdoc.css("testsuite").each do |element|
        errors   += element.attr("errors").to_i
        failures += element.attr("failures").to_i
        skipped  += element.attr("skipped").to_i
        tests    += element.attr("tests").to_i
        time     += element.attr("time").to_f
      end

      # Collect the test cases
      xdoc.css("testcase").each do |element|
        cases << element.to_s
      end

      File.delete(file)

    end

    # Write the final merged results.xml
    results = File.new(merged_file, "w")
    results.write("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n")
    results.write("<testsuite errors=\"#{errors}\" failures=\"#{failures}\" skipped=\"#{skipped}\" tests=\"#{tests}\" time=\"#{time}\">\n")
    results.write("  <properties/>\n")
    cases.each { |tc| results.write("  #{tc}\n") }
    results.write("</testsuite>")
    results.close

  end

end