def _check_annual_upsample_cases(self, targ, conv, meth, end='12/31/1991'):
        for month in MONTHS:
            ts = _simple_pts('1/1/1990', end, freq='A-%s' % month)

            result = ts.resample(targ, fill_method=meth,
                                 convention=conv)
            expected = result.to_timestamp(targ, how=conv)
            expected = expected.asfreq(targ, meth).to_period()
            assert_series_equal(result, expected)