assertEquals(0, response.getCapabilities(), "Initial capabilities should be 0");
        assertNotNull(response.getServerGuid(), "Server GUID should not be null");
        assertEquals(16, response.getServerGuid().length, "Server GUID should be 16 bytes");
        assertArrayEquals(new byte[16], response.getServerGuid(), "Initial server GUID should be all zeros");

     */
    public int getCapabilities() {
        return this.capabilities;
    }

    /**
     * Gets the server GUID
     *
     * @return the server's unique identifier
     */
    public byte[] getServerGuid() {
        return this.serverGuid;
    }

    /**
     * Gets the security mode
     *
     * @return the security mode flags from the server
     */
    public int getSecurityMode() {

        if (nego.getSecurityMode() != out.getSecurityMode() || nego.getCapabilities() != out.getCapabilities()
                || nego.getDialectRevision() != out.getDialect() || !Arrays.equals(nego.getServerGuid(), out.getServerGuid())) {
            log.debug("Secure negotiation failure");
            throw new CIFSException("Mismatched attributes validating negotiate info");
        }

        log.debug("Secure negotiation OK");

        for (int i = 0; i < 16; i++) {
            guid[i] = (byte) i;
        }
        setPrivateField(response, "serverGuid", guid);

        // When
        byte[] result = response.getServerGuid();

        // Then
        assertArrayEquals(guid, result);
    }

    @Test
    @DisplayName("Should return selected dialect")
    void testGetSelectedDialect() throws Exception {

        return this.dialectRevision;
    }

    /**
     * Gets the server GUID used for identification.
     *
     * @return the serverGuid
     */
    public byte[] getServerGuid() {
        return this.serverGuid;
    }

    /**
     * @return the selectedDialect
     */
    @Override
    public DialectVersion getSelectedDialect() {
        return this.selectedDialect;