# File lib/NativeFileType.rb, line 134
def self.compatability_score(file_system_image,filename,contents,file_type,aux_code)
  return non_matching_score  unless (file_type_matches?(file_system_image,file_type))
    load_address=self.load_address(contents)
    passed_tests=0
   code_for_tests.each do |code_for_test|
      RipXploreLog.debug "test for #{self} : #{code_for_test}"     
     result = eval code_for_test,binding
     RipXploreLog.debug "RESULT: #{result}"     
    return non_matching_score  unless (result)
    passed_tests+=1
  end
  return matching_score+passed_tests
end