public void testNewDataInput_empty() {
    byte[] b = new byte[0];
    ByteArrayDataInput in = ByteStreams.newDataInput(b);
    assertThrows(IllegalStateException.class, in::readInt);
  }

  public void testNewDataInput_normal() {
    ByteArrayDataInput in = ByteStreams.newDataInput(bytes);
    assertEquals(0x12345678, in.readInt());
    assertEquals(0x76543210, in.readInt());
    assertThrows(IllegalStateException.class, in::readInt);

  public void testNewDataInput_empty() {
    byte[] b = new byte[0];
    ByteArrayDataInput in = ByteStreams.newDataInput(b);
    assertThrows(IllegalStateException.class, in::readInt);
  }

  public void testNewDataInput_normal() {
    ByteArrayDataInput in = ByteStreams.newDataInput(bytes);
    assertEquals(0x12345678, in.readInt());
    assertEquals(0x76543210, in.readInt());
    assertThrows(IllegalStateException.class, in::readInt);