byte[] buf = {23};
    DataInput in = new LittleEndianDataInputStream(new ByteArrayInputStream(buf));
    assertThrows(EOFException.class, in::readUnsignedShort);
  }

  @SuppressWarnings("DoNotCall")
  public void testReadLine() throws IOException {
    DataInput in = new LittleEndianDataInputStream(new ByteArrayInputStream(data));
    UnsupportedOperationException expected =
        assertThrows(UnsupportedOperationException.class, in::readLine);