panda3d/tests/express/test_pointertoarray.py

def test_pta_float_pickle():
    from panda3d.core import PTA_float
    from direct.stdpy.pickle import dumps, loads, HIGHEST_PROTOCOL

    null_pta = PTA_float()

    empty_pta = PTA_float([])

    data_pta = PTA_float([1.0, 2.0, 3.0])
    data = data_pta.get_data()

    for proto in range(1, HIGHEST_PROTOCOL + 1):
        null_pta2 = loads(dumps(null_pta, proto))
        assert null_pta2.is_null()
        assert len(null_pta2) == 0

        empty_pta2 = loads(dumps(empty_pta, proto))
        assert not empty_pta2.is_null()
        assert len(empty_pta2) == 0

        data_pta2 = loads(dumps(data_pta, proto))
        assert tuple(data_pta2) == (1.0, 2.0, 3.0)
        assert data_pta2.get_data() == data_pta.get_data()