def test_gfs_url_half_degree(self):
        mt = datetime(2015, 7, 31, 6, tzinfo=pytz.utc)
        ft = datetime(2015, 7, 31, 9, tzinfo=pytz.utc)
        url = nomads.gfs_url(model_run=mt, forecast_time=ft, resolution=nomads.GFS_0_5_DEGREE)
        nose.tools.assert_equal(url, 'http://nomads.ncep.noaa.gov/pub/data/nccf/com/gfs/prod/gfs.2015073106/gfs.t06z.pgrb2.0p50.f003')