@Test
void empty_solution_should_be_empty() {

    VehicleRoutingSolution solution = SolutionFactory.emptySolution();
    assertThat(solution.getVisitList()).isEmpty();
    assertThat(solution.getDepotList()).isEmpty();
    assertThat(solution.getVehicleList()).isEmpty();
    assertThat(solution.getScore()).isEqualTo(HardSoftLongScore.ZERO);
}