@Test
public void testListHealthCheckers() {

    ListHealthChecksResult listHealthChecksResult = PowerMockito.mock(ListHealthChecksResult.class);
    Mockito.when(mockAmazonRoute53.listHealthChecks()).thenReturn(listHealthChecksResult);
    HealthCheck healthCheck = new HealthCheck();
    healthCheck.setHealthCheckConfig(new HealthCheckConfig().withRegions("us-west-2","us-east-1"));
    Mockito.when(listHealthChecksResult.getHealthChecks()).thenReturn(Arrays.asList(healthCheck));
    List<HealthCheck> healthChecks = route53RaiderUnderTest.listHealthCheckers();
    Assert.assertNotNull(healthChecks);
    Assert.assertEquals(healthChecks.get(0).getHealthCheckConfig().getRegions(), healthCheck.getHealthCheckConfig().getRegions());
}