@Test
public void emptyResult() throws RuleException {

    AggregationVerification aggregationVerification = AggregationVerification.builder().build();
    result = Collections.emptyList();
    assertThat(strategy.verify(concept, aggregationVerification, COLUMN_NAMES, result), equalTo(FAILURE));
    assertThat(strategy.verify(constraint, aggregationVerification, COLUMN_NAMES, result), equalTo(SUCCESS));
}