public void test_Compartment_parent_NULL() { SBMLDocument d = new SBMLDocument(); Model m = d.createModel(); Compartment c = m.createCompartment(); Compartment c1 = c.clone(); d = null; assertTrue(c1.getAncestorOfType(libsbml.SBML_MODEL) == null); assertTrue(c1.getParentSBMLObject() == null); assertEquals(c1.getSBMLDocument(), null); c1 = null; }