Method test_check_tzinfo

Lib/test/datetimetester.py:7016–7043

(self)

                    self.assertFalse(is_timedelta(arg, exact))

    def test_check_tzinfo(self):
        class TZInfoSubclass(tzinfo):
            pass

        tzi = tzinfo()
        tzis = TZInfoSubclass()
        tz = timezone(timedelta(hours=-5))

        is_tzinfo = _testcapi.datetime_check_tzinfo

        # Check the ones that should be valid
        self.assertTrue(is_tzinfo(tzi))
        self.assertTrue(is_tzinfo(tz))
        self.assertTrue(is_tzinfo(tzis))
        self.assertTrue(is_tzinfo(tzi, True))

        # Check that the subclasses do not match exactly
        self.assertFalse(is_tzinfo(tz, True))
        self.assertFalse(is_tzinfo(tzis, True))

        # Check that various other things are not tzinfos
        args = [tuple(), list(), 1, '2011-01-01',
                date(2011, 1, 1), datetime(2011, 1, 1)]

        for arg in args:
            for exact in (True, False):
                with self.subTest(arg=arg, exact=exact):
                    self.assertFalse(is_tzinfo(arg, exact))

    def test_date_from_date(self):
        exp_date = date(1993, 8, 26)