@Test
public void testSuccessfulStore() {

    TaskRelocationStatus relocationStatus = TaskRelocationPlanGenerator.oneSuccessfulRelocation();
    when(store.createTaskRelocationStatuses(anyList())).thenReturn(
            Mono.just(Collections.singletonMap(relocationStatus.getTaskId(), Optional.empty()))
    );
    step.storeTaskEvictionResults(Collections.singletonMap(relocationStatus.getTaskId(), relocationStatus));
    verify(store, times(1)).createTaskRelocationStatuses(anyList());
}