Assert.assertEquals(0, topoManagerImpl.getEdges().size());
topoManagerImpl.notifyNodeConnector(nc1, UpdateType.REMOVED, propMap);
topoManagerImpl.notifyNodeConnector(nc2, UpdateType.REMOVED, propMap);
Assert.assertTrue(topoManagerImpl.flushUpdateQueue(5000));
Assert.assertEquals(0, topoManagerImpl.getEdges().size());
topoManagerImpl.notifyNodeConnector(nc1, UpdateType.REMOVED, propMap);
topoManagerImpl.notifyNodeConnector(nc2, UpdateType.REMOVED, propMap);
Assert.assertTrue(topoManagerImpl.flushUpdateQueue(5000));