geowy

require 'spec_helper'

class Foo
  def self.bar(first, second, third)
    err_msg = '%s cannot be nil'
    raise ArgumentError, err_msg % 'first' unless first
    raise ArgumentError, err_msg % 'second' unless second
    raise ArgumentError, err_msg % 'third' unless third

    "#{first} #{second} #{third}"