@Test
public void testNiceNiblesOutput_2(){

    byte[] test = {7, 0, 7, 0xf, 7, 0, 0xa, 0, 7, 9};
    String result = "\\x07\\x00\\x07\\x0f\\x07\\x00\\x0a\\x00\\x07\\x09";
    assertEquals(result, ByteUtil.nibblesToPrettyString(test));
}