Method _test_plural_forms

Lib/test/test_gettext.py:358–386

(self, ngettext, gettext,
                           singular, plural, tsingular, tplural,
                           numbers_only=True)

class PluralFormsTests:

    def _test_plural_forms(self, ngettext, gettext,
                           singular, plural, tsingular, tplural,
                           numbers_only=True):
        x = ngettext(singular, plural, 1)
        self.assertEqual(x, tsingular)
        x = ngettext(singular, plural, 2)
        self.assertEqual(x, tplural)
        x = gettext(singular)
        self.assertEqual(x, tsingular)

        lineno = self._test_plural_forms.__code__.co_firstlineno + 12
        with self.assertWarns(DeprecationWarning) as cm:
            x = ngettext(singular, plural, 1.0)
        self.assertEqual(cm.filename, __file__)
        self.assertEqual(cm.lineno, lineno)
        self.assertEqual(x, tsingular)
        with self.assertWarns(DeprecationWarning) as cm:
            x = ngettext(singular, plural, 1.1)
        self.assertEqual(cm.filename, __file__)
        self.assertEqual(cm.lineno, lineno + 5)
        self.assertEqual(x, tplural)

        if numbers_only:
            with self.assertRaises(TypeError):
                ngettext(singular, plural, None)
        else:
            with self.assertWarns(DeprecationWarning) as cm:
                x = ngettext(singular, plural, None)
            self.assertEqual(x, tplural)

    def test_plural_forms(self):
        self._test_plural_forms(