'Check if sublocales fall back to the main locale'

def test_sub_locales(self):

    with self.settings(USE_THOUSAND_SEPARATOR=True):
        with translation.override('de-at', deactivate=True):
            self.assertEqual('66.666,666', Template('{{    n    }}').render(self.ctxt))
        with translation.override('es-us', deactivate=True):
            self.assertEqual('31    de    Diciembre    de    2009', date_format(self.d))
