@Test
public void testDefaultStorageLevel() {

    String[] args = {};
    ValidatorConfiguration params = new ValidatorConfiguration(new String[]{"targetDatabase", "entity", "partition", "path-to-policy-file"});
    new JCommander(params).parse(args);
    String defaultStorageLevel = params.getStorageLevel();
    assertEquals("MEMORY_AND_DISK", defaultStorageLevel);
}