@Test  (expected = UnknownHostException.class)
public void testAssertFalseR53FailoverUnknownHost() throws Throwable
{

    PowerMockito.when(DNSLookup.hostNameLookup("primary")).thenThrow(new UnknownHostException());
    route53StepDefinitions.assertFalseR53Failover("primary", "secondary");
}