public void testToArray_withNull() {
    List<@Nullable Byte> list = Arrays.asList((byte) 0, (byte) 1, null);
    assertThrows(NullPointerException.class, () -> Bytes.toArray(list));
  }

  public void testToArray_withConversion() {
    byte[] array = {(byte) 0, (byte) 1, (byte) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Byte> list = Arrays.asList((byte) 0, (byte) 1, null);
    assertThrows(NullPointerException.class, () -> Bytes.toArray(list));
  }

  public void testToArray_withConversion() {
    byte[] array = {(byte) 0, (byte) 1, (byte) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Double> list = Arrays.asList((double) 0, (double) 1, null);
    assertThrows(NullPointerException.class, () -> Doubles.toArray(list));
  }

  public void testToArray_withConversion() {
    double[] array = {(double) 0, (double) 1, (double) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Float> list = Arrays.asList((float) 0, (float) 1, null);
    assertThrows(NullPointerException.class, () -> Floats.toArray(list));
  }

  public void testToArray_withConversion() {
    float[] array = {(float) 0, (float) 1, (float) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Integer> list = Arrays.asList((int) 0, (int) 1, null);
    assertThrows(NullPointerException.class, () -> Ints.toArray(list));
  }

  public void testToArray_withConversion() {
    int[] array = {0, 1, 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Double> list = Arrays.asList((double) 0, (double) 1, null);
    assertThrows(NullPointerException.class, () -> Doubles.toArray(list));
  }

  public void testToArray_withConversion() {
    double[] array = {(double) 0, (double) 1, (double) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Float> list = Arrays.asList((float) 0, (float) 1, null);
    assertThrows(NullPointerException.class, () -> Floats.toArray(list));
  }

  public void testToArray_withConversion() {
    float[] array = {(float) 0, (float) 1, (float) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);

  public void testToArray_withNull() {
    List<@Nullable Long> list = Arrays.asList((long) 0, (long) 1, null);
    assertThrows(NullPointerException.class, () -> Longs.toArray(list));
  }

  public void testToArray_withConversion() {
    long[] array = {(long) 0, (long) 1, (long) 2};

    List<Byte> bytes = Arrays.asList((byte) 0, (byte) 1, (byte) 2);
    List<Short> shorts = Arrays.asList((short) 0, (short) 1, (short) 2);