class Shindo::Tests

def test(description, tags = [], &block)
  @description_stack.push(description)
  @tag_stack.push([*tags])
  # if the test includes tags and discludes ^tags, evaluate it
  if (@if_tagged.empty? || !(@if_tagged & @tag_stack.flatten).empty?) &&
      (@unless_tagged.empty? || (@unless_tagged & @tag_stack.flatten).empty?)
    if block_given?
      for before in @befores.flatten.compact
        before.call
      end
      @annals.start
      begin
        success = instance_eval(&block)
        @annals.stop
      rescue => error
        success = false
        file, line, method = error.backtrace.first.split(':')
        if method
          method << "in #{method[4...-1]} " # get method from "in `foo'"
        else
          method = ''
        end
        method << "! #{error.message} (#{error.class})"
        @annals.stop
        @annals.unshift(:file => file, :line => line.to_i, :method => method)
      end
      @success = @success && success
      if success
        green_line("+ #{full_description}")
      else
        red_line("- #{full_description}")
        if STDOUT.tty?
          prompt(&block)
        end
      end
      for after in @afters.flatten.compact
        after.call
      end
    else
      yellow_line("* #{full_description}")
    end
  else
    print_line("_ #{full_description}")
  end
  @tag_stack.pop
  @description_stack.pop
end