    >>> from zope.component import getUtility, provideUtility

Test LanguageCulture
---------------------------------
    >>> from getpaid.verkkomaksut.interfaces import ILanguageCulture
    >>> from getpaid.verkkomaksut.utilities.verkkomaksut_utilities import LanguageCulture
    >>> provideUtility(LanguageCulture(), provides=ILanguageCulture)
    >>> language_culture = getUtility(ILanguageCulture)
    >>> language_bindings = ('fi', 'en', [])
    >>> language_culture(language_bindings)
    'fi_FI'
    >>> language_bindings = ('ja', 'sv', [])
    >>> language_culture(language_bindings)
    'sv_SE'
    >>> language_bindings = ('', '', ['ru','en'])
    >>> language_culture(language_bindings)
    'ru_RU'
    >>> language_bindings = ('', '', [])
    >>> language_culture(language_bindings)
    'en_US'
