color_reporter.rb

# A super basic color output formatter for MiniTest in 1.9.3
class ColorReporter
  attr_reader :io
  def initialize io, opts={}
    @io = io
    @opts = opts
  end
  def print o
    case o
    when '.'
      io.print green(o)
    when 'E', 'F'
      io.print red(o)
    when 'S'
      io.print yellow(o)
    else
      io.print o
    end
  end

  def puts(*o)
    o.map! do |s|
      if s.to_s.match(/(failure|error):/i)
        red s
      elsif s.to_s.match(/skipped:/i)
        yellow s
      else
        s
      end
    end

    super
  end

  def green(o)
    "\033[32;1m#{o}\033[0m"
  end

  def red(o)
    "\033[31;1m#{o}\033[0m"
  end

  def yellow(o)
    "\033[33m#{o}\033[0m"
  end

end

MiniTest::Unit.output = ColorReporter.new(MiniTest::Unit.output)