@Test
public void configureNicGatewayAndManagementNetworkTestBufferEmpty() throws Exception {

    StringBuilder buf = new StringBuilder();
    configureTestConfigureNicGatewayAndManagementNetwork(false, TrafficType.Guest);
    spy.configureNicGatewayAndManagementNetwork(dest, buf, nic);
    Assert.assertEquals(StringUtils.EMPTY, buf.toString());
}