@Test
public void overlapShouldNotInferReverseIfRequestedNotTo() {

    CategoricalInput one = new CategoricalInput(3, new long[]{1, 2, 3, 4});
    CategoricalInput two = new CategoricalInput(7, new long[]{1, 2, 3});
    SimilarityResult result = one.overlap(0.0, two, false);
    assertNull(result);
}