@Test
public void shouldPrepareAndFillAndSortSecondBucket() {
List<Integer> input = asList(4, 3, 2, 1);
BucketSortTask bucketSortTask = new BucketSortTask(input, 2, 1);
List<Integer> bucket = bucketSortTask.compute();
// the buckets are distributed evenly according to the max value and we include the zero as an
// element
assertEquals(asList(-1, 2, 3, 4), bucket);
}
@Test
public void shouldCreateTwoSubTasksForTwoBuckets() {
List<Integer> input = asList(4, 3, 2, 1);
BucketSortTask bucketSortTask = new BucketSortTask(input, 2);
List<BucketSortTask> subTasks = bucketSortTask.createBucketSortTasks();
assertEquals(2, subTasks.size());
// first one should be computable and sorted
List<Integer> bucket1 = subTasks.get(0).compute();
List<Integer> bucket2 = subTasks.get(1).compute();
assertEquals(asList(-1, -1, -1, 1), bucket1);
assertEquals(asList(-1, 2, 3, 4), bucket2);
}