ImmutableDoubleArray.of(0, 1, 3).subArray(1, 1).stream().forEach(i -> fail());
    assertThat(ImmutableDoubleArray.of(0, 1, 3).stream().toArray())
        .isEqualTo(new double[] {0, 1, 3});
  }

  public void testSubArray() {
    ImmutableDoubleArray iia0 = ImmutableDoubleArray.of();
    ImmutableDoubleArray iia1 = ImmutableDoubleArray.of(5);
    ImmutableDoubleArray iia3 = ImmutableDoubleArray.of(5, 25, 125);

    ImmutableIntArray.of(0, 1, 3).subArray(1, 1).stream().forEach(i -> fail());
    assertThat(ImmutableIntArray.of(0, 1, 3).stream().toArray()).isEqualTo(new int[] {0, 1, 3});
  }

  public void testSubArray() {
    ImmutableIntArray iia0 = ImmutableIntArray.of();
    ImmutableIntArray iia1 = ImmutableIntArray.of(5);
    ImmutableIntArray iia3 = ImmutableIntArray.of(5, 25, 125);

    ImmutableDoubleArray.of(0, 1, 3).subArray(1, 1).stream().forEach(i -> fail());
    assertThat(ImmutableDoubleArray.of(0, 1, 3).stream().toArray())
        .isEqualTo(new double[] {0, 1, 3});
  }

  public void testSubArray() {
    ImmutableDoubleArray iia0 = ImmutableDoubleArray.of();
    ImmutableDoubleArray iia1 = ImmutableDoubleArray.of(5);
    ImmutableDoubleArray iia3 = ImmutableDoubleArray.of(5, 25, 125);