Add tests for Uruguay area code change
user
```ruby
require File.expand_path(File.dirname(__FILE__) + '/../test_helper')

## Uruguay
# source: http://en.wikipedia.org/wiki/Telephone_numbers_in_Uruguay
class UYTest < Test::Unit::TestCase
  
  # 02 Montevideo
  def test_montevideo
    parse_test('+598 2 1234567', '598', '2', '1234567')
  end
  
  # 042 Maldonado
  def test_maldonado
    parse_test('+598 42 123456', '598', '42', '123456')
  end

  # 09 Mobile phones
  def test_mobile_phones
    parse_test('+598 99 570110', '598', '99', '570110')
  end
    
end
```
assistant