Initial imports
===============
    >>> from zope.component import getUtility, provideUtility

ICountries
==========
    >>> from collective.cart.shipping.interfaces import ICountries
    >>> from collective.cart.shipping.utility.country import Countries
    >>> provideUtility(Countries(), provides=ICountries)
    >>> countries = getUtility(ICountries)()
    >>> countries.get('FI')
    'Finland'
    >>> countries.get('US')
    'United States'
    >>> countries.get('JP')
    'Japan'
    >>> otl = getUtility(ICountries).ordered_tuple_list()
    >>> len(otl)
    246
    >>> otl[0]
    ('AF', 'Afghanistan')
