@Test
public void testGetEbsBlockDeviceConfigsWhenInputListContainsNullElement()
{

    // Create a list of emrClusterDefinitionEbsBlockDeviceConfigs with a null element.
    List<EmrClusterDefinitionEbsBlockDeviceConfig> emrClusterDefinitionEbsBlockDeviceConfigs = new ArrayList<>();
    emrClusterDefinitionEbsBlockDeviceConfigs.add(null);
    // Call the method under test.
    List<EbsBlockDeviceConfig> result = emrDaoImpl.getEbsBlockDeviceConfigs(emrClusterDefinitionEbsBlockDeviceConfigs);
    // Verify the external calls.
    verifyNoMoreInteractionsHelper();
    // Validate the results.
    assertEquals(new ArrayList<>(), result);
}