class Minitest::Reporters::HtmlReporter

def initialize(args = {})

:mode - Useful for debugging, :terse suppresses errors and is the default, :verbose lets errors bubble up
:erb_template - the path to a custom ERB template, defaults to the supplied ERB template
:reports_dir - the directory the reports should be written to, defaults to 'test/html_reports'
:title - the title that will be used in the report, defaults to 'Test Results'
The constructor takes a hash, and uses the following keys: 
def initialize(args = {})
  super({})
  defaults = {
      :title        => 'Test Results',
      :erb_template => "#{File.dirname(__FILE__)}/../templates/index.html.erb",
      :reports_dir  => 'test/html_reports',
      :mode         => :safe
  }
  settings = defaults.merge(args)
  @mode = settings[:mode]
  @title = settings[:title]
  @erb_template = settings[:erb_template]
  reports_dir = settings[:reports_dir]
  @reports_path = File.absolute_path(reports_dir)
  puts "Emptying #{@reports_path}"
  FileUtils.remove_dir(@reports_path) if File.exists?(@reports_path)
  FileUtils.mkdir_p(@reports_path)
end