@Test
    public void requireThatToHexStringIsUnformatted() {
        assertEquals("6162636465666768696A6B6C6D6E6F707172737475767778797A",
                     HexDump.toHexString("abcdefghijklmnopqrstuvwxyz".getBytes(UTF8)));
        assertEquals("FEFF006100620063006400650066006700680069006A006B006C00" +
                     "6D006E006F0070007100720073007400750076007700780079007A",
                     HexDump.toHexString("abcdefghijklmnopqrstuvwxyz".getBytes(UTF16)));
    }
@author Simon Thoresen Hult
@author <a href="mailto:steinar@yahoo-inc.com">Steinar Knutsen</a>
vespajlib/src/test/java/com/yahoo/io/HexDumpTestCase.java