assertEquals("1.3.6.1.4.1.311.2.2.10", SpnegoConstants.NTLMSSP_MECHANISM, "NTLMSSP_MECHANISM mismatch");
    }

    @Test
    @DisplayName("Interface structure is as expected")
    void interfaceStructure() {
        Class<?> c = SpnegoConstants.class;
        assertTrue(c.isInterface(), "SpnegoConstants must be an interface");
        assertEquals(4, c.getDeclaredFields().length, "Unexpected number of fields");