* {@code ByteBuffer.allocate(8).putLong(value).array()}. For example, the input value {@code
   * 0x1213141516171819L} would yield the byte array {@code {0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
   * 0x18, 0x19}}.
   *
   * <p>If you need to convert and concatenate several values (possibly even of different types),
   * use a shared {@link java.nio.ByteBuffer} instance, or use {@link

    assertThat(Ints.toByteArray(0x12131415)).isEqualTo(new byte[] {0x12, 0x13, 0x14, 0x15});
    assertThat(Ints.toByteArray(0xFFEEDDCC))
        .isEqualTo(new byte[] {(byte) 0xFF, (byte) 0xEE, (byte) 0xDD, (byte) 0xCC});
  }

  public void testFromByteArray() {
    assertThat(Ints.fromByteArray(new byte[] {0x12, 0x13, 0x14, 0x15, 0x33})).isEqualTo(0x12131415);

   * {@code ByteBuffer.allocate(4).putInt(value).array()}. For example, the input value {@code
   * 0x12131415} would yield the byte array {@code {0x12, 0x13, 0x14, 0x15}}.
   *
   * <p>If you need to convert and concatenate several values (possibly even of different types),
   * use a shared {@link java.nio.ByteBuffer} instance, or use {@link

        <match value="0xF" type="big32" offset="4"/>
        <match value="0x10" type="big32" offset="4"/>
        <match value="0x11" type="big32" offset="4"/>
        <match value="0x12" type="big32" offset="4"/>
        <match value="0x13" type="big32" offset="4"/>
      </match>
      <match value="0xBEBAFECA" type="string" offset="0">
        <match value="0x1" type="little32" offset="4"/>

  }

  @GwtIncompatible // Chars.fromByteArray, Chars.toByteArray
  public void testByteArrayRoundTripsFails() {
    assertThrows(IllegalArgumentException.class, () -> Chars.fromByteArray(new byte[] {0x11}));
  }

  public void testEnsureCapacity() {
    assertThat(Chars.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);
    assertThat(Chars.ensureCapacity(ARRAY1, 0, 1)).isSameInstanceAs(ARRAY1);

   * {@code ByteBuffer.allocate(2).putShort(value).array()}. For example, the input value {@code
   * (short) 0x1234} would yield the byte array {@code {0x12, 0x34}}.
   *
   * <p>If you need to convert and concatenate several values (possibly even of different types),
   * use a shared {@link java.nio.ByteBuffer} instance, or use {@link

   * {@code ByteBuffer.allocate(2).putShort(value).array()}. For example, the input value {@code
   * (short) 0x1234} would yield the byte array {@code {0x12, 0x34}}.
   *
   * <p>If you need to convert and concatenate several values (possibly even of different types),
   * use a shared {@link java.nio.ByteBuffer} instance, or use {@link