class ParallelTests::RSpec::LoggerBase

def initialize(*args)
  super
  @output ||= args[0]
  case @output
  when String # a path ?
    FileUtils.mkdir_p(File.dirname(@output))
    File.open(@output, 'w') {} # overwrite previous results
    @output = File.open(@output, 'a')
  when File # close and restart in append mode
    @output.close
    @output = File.open(@output.path, 'a')
  end
end