def test_SpillContainerPair_uncertainty(self): 'test uncertainty property' u_scp = SpillContainerPair(True) u_scp.uncertain = False assert not u_scp.uncertain assert not hasattr(u_scp, '_u_spill_container') u_scp.uncertain = True assert u_scp.uncertain assert hasattr(u_scp, '_u_spill_container')