ImmutableLongArray.builder(-1);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  /**
   * If there's a bug in builder growth, we wouldn't know how to expose it. So, brute force the hell
   * out of it for a while and see what happens.
   */
  public void testBuilder_bruteForce() {
    for (int i = 0; i < reduceIterationsIfGwt(100); i++) {

      ImmutableDoubleArray.builder(-1);
      fail();
    } catch (IllegalArgumentException expected) {
    }
  }

  /**
   * If there's a bug in builder growth, we wouldn't know how to expose it. So, brute force the hell
   * out of it for a while and see what happens.
   */
  public void testBuilder_bruteForce() {
    for (int i = 0; i < reduceIterationsIfGwt(100); i++) {

    input = Arrays.copyOf(input, input.length);
    Doubles.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      double[] input, int distance, int fromIndex, int toIndex, double[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Doubles.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);

    input = Arrays.copyOf(input, input.length);
    Longs.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      long[] input, int distance, int fromIndex, int toIndex, long[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Longs.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);

    input = Arrays.copyOf(input, input.length);
    Doubles.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      double[] input, int distance, int fromIndex, int toIndex, double[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Doubles.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);

    input = Arrays.copyOf(input, input.length);
    Longs.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      long[] input, int distance, int fromIndex, int toIndex, long[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Longs.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);

    input = Arrays.copyOf(input, input.length);
    Bytes.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      byte[] input, int distance, int fromIndex, int toIndex, byte[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Bytes.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);

    input = Arrays.copyOf(input, input.length);
    Ints.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      int[] input, int distance, int fromIndex, int toIndex, int[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Ints.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);
  }

 * variety of sequences of the {@link Iterator#next}, {@link Iterator#hasNext} and {@link
 * Iterator#remove} operations. This utility takes the brute-force approach of trying <i>all</i>
 * possible sequences of these operations, up to a given number of steps. So, if the caller
 * specifies to use <i>n</i> steps, a total of <i>3^n</i> tests are actually performed.
 *

    input = Arrays.copyOf(input, input.length);
    Chars.rotate(input, distance);
    assertThat(input).isEqualTo(expectedOutput);
  }

  private static void testRotate(
      char[] input, int distance, int fromIndex, int toIndex, char[] expectedOutput) {
    input = Arrays.copyOf(input, input.length);
    Chars.rotate(input, distance, fromIndex, toIndex);
    assertThat(input).isEqualTo(expectedOutput);