class Test::Unit::Collector::Dir

def collect_file(name, suites, already_gathered)
  # loadpath = $:.dup
  dir = File.dirname(File.expand_path(name))
  $:.unshift(dir) unless $:.first == dir
  if(@req)
    @req.require(name)
  else
    require(name)
  end
  find_test_cases(already_gathered).each{|t| add_suite(suites, t.suite)}
ensure
  # $:.replace(loadpath)
  $:.delete_at $:.rindex(dir)
end