}

  public void testScale_index_compute_doubleCollection_empty() {
    Quantiles.ScaleAndIndex intermediate = Quantiles.scale(10).index(3);
    assertThrows(IllegalArgumentException.class, () -> intermediate.compute(EMPTY_DATASET));
  }

  public void testScale_index_compute_doubleVarargs_empty() {
    Quantiles.ScaleAndIndex intermediate = Quantiles.scale(10).index(3);

  }

  public void testScale_index_compute_doubleCollection_empty() {
    Quantiles.ScaleAndIndex intermediate = Quantiles.scale(10).index(3);
    assertThrows(IllegalArgumentException.class, () -> intermediate.compute(EMPTY_DATASET));
  }

  public void testScale_index_compute_doubleVarargs_empty() {
    Quantiles.ScaleAndIndex intermediate = Quantiles.scale(10).index(3);

 *
 * <p>When calling {@link ScaleAndIndex#compute} (in {@linkplain ScaleAndIndexes#compute either
 * form}), the memory requirement is 8*N bytes for the copy of the dataset plus an overhead which is
 * independent of N (but depends on the quantiles being computed). When calling {@link
 * ScaleAndIndex#computeInPlace computeInPlace} (in {@linkplain ScaleAndIndexes#computeInPlace