assert_errooo is an assert extension of Minitest::Assertions (inspired by tv presenter Faustão)

assert_errooo.rb

exit unless `which mpg123` && $?.success?

require 'minitest'
require 'minitest/autorun'
require 'minitest/pride'

module Minitest::Assertions
	def assert_errooo(col, value, msg = nil)
		assert col == value, call_errooo(msg)
	end

	private

	def call_errooo(msg)
		spawn('mpg123 -q faustao-errou.mp3')

		msg
	end
end

################################################################################

describe 'assert_errooo' do
	it 'emits a sound when it fails' do
		assert_errooo(true, false, 'Your error message goes here')
	end
end