result := prevIntervals.withOrderedIndexes(sets.List(newSucceeded))
	return prevIntervals, result
}

// calculateFailedIndexes returns the list of failed indexes in compressed
// format (intervals). The list includes indexes already present in
// .status.failedIndexes and indexes that failed since the last sync.
func calculateFailedIndexes(logger klog.Logger, job *batch.Job, pods []*v1.Pod) *orderedIntervals {
	var prevIntervals orderedIntervals

			},
			wantFailedIndexes: []interval{{1, 1}},
		},
	}
	for name, tc := range cases {
		t.Run(name, func(t *testing.T) {
			failedIndexes := calculateFailedIndexes(logger, &tc.job, tc.pods)
			if diff := cmp.Diff(&tc.wantFailedIndexes, failedIndexes); diff != "" {
				t.Errorf("Unexpected failed indexes (-want,+got):\n%s", diff)
			}
		})
	}
}

		jobCtx.succeeded = int32(jobCtx.succeededIndexes.total())
		if hasBackoffLimitPerIndex(&job) {
			jobCtx.failedIndexes = calculateFailedIndexes(logger, &job, pods)
			if jobCtx.finishedCondition == nil {
				if job.Spec.MaxFailedIndexes != nil && jobCtx.failedIndexes.total() > int(*job.Spec.MaxFailedIndexes) {

				if tc.enableJobBackoffLimitPerIndex && job.Spec.BackoffLimitPerIndex != nil {
					jobCtx.failedIndexes = calculateFailedIndexes(logger, job, tc.pods)
					jobCtx.activePods = controller.FilterActivePods(logger, tc.pods)
					jobCtx.podsWithDelayedDeletionPerIndex = getPodsWithDelayedDeletionPerIndex(logger, jobCtx)
				}
			}