bb.putShort((short) 0);

        referral.decode(testBuffer, 0, testBuffer.length);

        assertEquals(3, referral.getVersion());
        assertEquals(100, referral.getSize());
        assertEquals(7, referral.getServerType());
        assertEquals(1, referral.getRFlags());
        assertEquals(20, referral.getProximity());
        assertEquals(3600, referral.getTtl());

             * longest path in the list of stand-alone referrals.
             */
            if (referrals != null && now > referrals.expiration) {
                referrals = null;
            }
            if (referrals == null) {
                referrals = new CacheEntry(0);
            }
            String key = "\\" + domain + "\\" + root;

    // Helper methods for creating test buffers

    private byte[] createValidDfsReferralBuffer() {
        // Create a buffer representing a valid DFS referral response
        // Need to include space for actual string data
        int stringDataStart = 28; // After the referral structure
        String testPath = "\\server\\share";
        byte[] pathBytes = testPath.getBytes(java.nio.charset.StandardCharsets.UTF_16LE);

            final SmbTransportInternal trans = dc.unwrap(SmbTransportInternal.class);
            // the tconHostName is from the DC referral, that referral must be resolved
            // before following deeper ones. Otherwise e.g. samba will return a broken
            // referral.
            synchronized (trans) {
                try {
                    // ensure connected
                    trans.ensureConnected();

            // Second Referral v1
            bb.putShort((short) 1); // version
            bb.putShort((short) 16); // size
            bb.putShort((short) 1); // serverType
            bb.putShort((short) 3); // rflags
            bb.put("\\srv2\0".getBytes(StandardCharsets.UTF_16LE));

            // Position for third referral
            bb.position(40); // 8 header + 16 + 16

            // Third Referral v1

    }

    /**
     *
     * @param loc
     * @param host
     * @param referral
     * @return tree handle
     * @throws IOException
     */
    public synchronized SmbTreeHandleImpl connectHost(final SmbResourceLocatorImpl loc, String host, final DfsReferralData referral)
            throws IOException {
        String targetDomain = ctx.getCredentials().getUserDomain();

    }

    /**
     * Set the referral data from a referral response
     *
     * @param ref the referral response
     * @param reqPath the requested path
     * @param expire the expiration time
     * @param consumed the number of characters consumed from the path
     * @return referral data
     */

    private DfsReferralRequestBuffer buffer;

    @Nested
    @DisplayName("Constructor Tests")
    class ConstructorTests {

        @Test
        @DisplayName("Should create buffer with simple path and referral level")
        void testConstructorWithSimplePath() {
            String path = "\\\\server\\share";
            int maxReferralLevel = 3;

            buffer = new DfsReferralRequestBuffer(path, maxReferralLevel);

    @Mock
    private jcifs.CIFSContext ctx;

    @Mock
    private SmbSession session;

    @Mock
    private jcifs.DfsReferralData referral;

    @BeforeEach
    void resetMocks() {
        Mockito.reset(transport, ctx, session, referral);
    }

    // Happy path: hasCapability returns based on provided capability codes
    @ParameterizedTest

        }
    }

    @Nested
    @DisplayName("Combine Tests")
    class CombineTests {

        @Test
        @DisplayName("Should combine two referral data objects")
        void testCombine() {
            // Setup first referral
            DfsReferralDataImpl first = new DfsReferralDataImpl();
            when(mockReferral.getTtl()).thenReturn(300);
            when(mockReferral.getRFlags()).thenReturn(0);