@Test
    void verifyHex() {
        assertNull(EncodingUtils.hexDecode("one"));
        assertNull(EncodingUtils.hexDecode(StringUtils.EMPTY));
        assertNull(EncodingUtils.hexEncode((byte[]) null));
        assertNull(EncodingUtils.hexEncode((String) null));
        assertNull(EncodingUtils.hexDecode("one".toCharArray()));
        assertNull(EncodingUtils.hexDecode((char[]) null));
    }
This is {@link EncodingUtilsTests}.

@author Misagh Moayyed
@since 5.2.0
core/cas-server-core-util/src/test/java/org/apereo/cas/util/EncodingUtilsTests.java