class Autotest

def run_tests
  hook :run_command
  new_mtime = self.find_files_to_test
  return unless new_mtime
  self.last_mtime = new_mtime
  cmd = self.make_test_cmd self.files_to_test
  return if cmd.empty?
  puts cmd unless options[:quiet]
  old_sync = $stdout.sync
  $stdout.sync = true
  self.results = []
  line = []
  begin
    open("| #{cmd}", "r") do |f|
      until f.eof? do
        c = f.getc or break
        print (c.is_a?(Fixnum) ? c.chr : c)
        line << c
        if c == ?\n then
          self.results << if RUBY_VERSION >= "1.9" then
                            line.join
                          else
                            line.pack "c*"
                          end
          line.clear
        end
      end
    end
  ensure
    $stdout.sync = old_sync
  end
  hook :ran_command
  self.results = self.results.join
  handle_results(self.results)
end