class ParallelTests::Test::RuntimeLogger

def self.class_directory(suspect)
  result = "test/"
  if defined?(Rails)
    result += case suspect.superclass.name
    when "ActionDispatch::IntegrationTest"
      "integration/"
    when "ActionDispatch::PerformanceTest"
      "performance/"
    when "ActionController::TestCase"
      "functional/"
    when "ActionView::TestCase"
      "unit/helpers/"
    else
      "unit/"
    end
  end
  result
end

def self.class_to_filename(suspect)
  word = suspect.to_s.dup
  return word unless word.match /^[A-Z]/ and not word.match %r{/[a-z]}
  word.gsub!(/([A-Z]+)([A-Z][a-z])/, '\1_\2')
  word.gsub!(/([a-z\d])([A-Z])/, '\1_\2')
  word.gsub!(/\:\:/, '/')
  word.tr!("-", "_")
  word.downcase!
  word
end

def self.locked_appending_to(file)
  File.open(file, 'a') do |f|
    begin
      f.flock File::LOCK_EX
      yield f
    ensure
      f.flock File::LOCK_UN
    end
  end
end

def self.log(test, start_time, end_time)
  return if test.is_a? ::Test::Unit::TestSuite # don't log for suites-of-suites
  if !@@has_started # make empty log file
    File.open(logfile, 'w'){}
    @@has_started = true
  end
  locked_appending_to(logfile) do |file|
    file.puts(message(test, start_time, end_time))
  end
end

def self.logfile
  ParallelTests::Test::Runner.runtime_log
end

def self.message(test, start_time, end_time)
  delta = "%.2f" % (end_time.to_f-start_time.to_f)
  filename = class_directory(test.class) + class_to_filename(test.class) + ".rb"
  "#{filename}:#{delta}"
end