@Test
  public void testGetPhysicalNodes() {
    testInitialization();
    HashMap<YangInstanceIdentifier, UnderlayItem> physicalNodes = new HashMap<>();
    UnderlayItem physicalNode =
        new UnderlayItem(mockNormalizedNode1, null, TOPOLOGY_ID, NODE_ID, CorrelationItemEnum.Node);
    physicalNodes.put(createTopologyIdentifier(TOPOLOGY_ID).build(), physicalNode);

    physicalNodesEqual(physicalNodes, topologyStore.getUnderlayItems());
  }
 @Test
 public void testGetId() {
   testInitialization();
   Assert.assertEquals(TOPOLOGY_ID, topologyStore.getId());
 }
 @Test
 public void testIsAggregateInside() {
   testInitialization();
   Assert.assertEquals(true, topologyStore.isAggregateInside());
 }