fwElements.add(ComponentContext.inject(VpcVirtualRouterElement.class));
firewallMgr._firewallElements = fwElements;
try {
when(virtualRouter.applyFWRules(any(Network.class), any(List.class))).thenReturn(false);
when(vpcVirtualRouter.applyFWRules(any(Network.class), any(List.class))).thenReturn(true);
//Network network, Purpose purpose, List<? extends FirewallRule> rules
firewallMgr.applyRules(mock(Network.class), Purpose.Firewall, ruleList);
verify(vpcVirtualRouter).applyFWRules(any(Network.class), any(List.class));
verify(virtualRouter).applyFWRules(any(Network.class), any(List.class));