public void testCdoIdInUndoRedoCommitScenario() throws Exception
  {
    TransactionalEditingDomain domain = TransactionalEditingDomain.Factory.INSTANCE.createEditingDomain();
    ResourceSet resourceSet = domain.getResourceSet();

    Company company = getModel1Factory().createCompany();

    CDOSession session = openSession();
    CDOTransaction transaction = session.openTransaction(resourceSet);
    CDOResource resource = transaction.createResource(getResourcePath(RESOURCE_PATH));

    resource.getContents().add(company);
    resource.save(null);

    PurchaseOrder order = getModel1Factory().createPurchaseOrder();

    domain.getCommandStack().execute(AddCommand.create(domain, company,
        company.eClass().getEStructuralFeature(Model1Package.COMPANY__PURCHASE_ORDERS), Collections.singleton(order)));

    resource.save(null);

    CDOID cdoId1 = CDOUtil.getCDOObject(order).cdoID();

    domain.getCommandStack().undo();

    resource.save(null);

    CDOID cdoId2 = CDOUtil.getCDOObject(order).cdoID();

    Assert.assertTrue(cdoId2 == null);

    domain.getCommandStack().redo();

    resource.save(null);

    CDOID cdoId3 = CDOUtil.getCDOObject(order).cdoID();

    // Since order is still the same object the same ID is expected
    Assert.assertTrue(CDOIDUtil.equals(cdoId1, cdoId3));

  }