when(dc.toString()).thenReturn("TESTDC");

            NtlmChallenge nc = new NtlmChallenge(challenge, dc);
            String result = nc.toString();

            // With size = 1 * 2 = 2, Hexdump.toHexString produces "AB"
            assertTrue(result.contains("challenge=0xAB"));
            assertTrue(result.contains("dc=TESTDC"));
        }

        @Test