def test_obj_del(self):
        p = tvtk.Property()
        p.representation = 0
        ref = weakref.ref(p)
        del p
        self.assertEqual(ref(), None)
Check if childJob is already a child of this job.
dataset/ETHPy150Open enthought/mayavi/tvtk/tests/test_tvtk.py/TestTVTK.test_obj_del--crossover with--dataset/ETHPy150Open BD2KGenomics/toil/src/toil/job.py/Job.hasChild