assertNull(nc.challenge);
            assertSame(dc, nc.dc);
        }

        @Test
        @DisplayName("Constructor accepts null dc")
        void testConstructorAcceptsNullDc() {
            byte[] challenge = new byte[] { 1, 2, 3 };

            NtlmChallenge nc = new NtlmChallenge(challenge, null);

            assertSame(challenge, nc.challenge);
            assertNull(nc.dc);