}

        @Test
        @DisplayName("Should define getFree method")
        void shouldDefineGetFreeMethod() throws NoSuchMethodException {
            // Verify method exists with correct signature
            assertNotNull(AllocInfo.class.getMethod("getFree"));
            assertEquals(long.class, AllocInfo.class.getMethod("getFree").getReturnType());
        }

        @Test

            // Then
            long expectedFree = free * sectPerAlloc * bytesPerSect;
            assertEquals(expectedFree, fileFsSizeInfo.getFree());
            assertEquals(2097152L, fileFsSizeInfo.getFree()); // 512 * 8 * 512
        }

        @Test
        @DisplayName("Should handle overflow in capacity calculation")

            // Then
            long expectedFree = callerFree * sectPerAlloc * bytesPerSect;
            assertEquals(expectedFree, fileFsFullSizeInfo.getFree());
            assertEquals(2097152L, fileFsFullSizeInfo.getFree()); // 512 * 8 * 512
        }

        @Test
        @DisplayName("Should handle overflow in capacity calculation")

        SmbInfoAllocation info = (SmbInfoAllocation) response.getInfo();
        assertEquals(8L * 1000000L * 512L, info.getCapacity());
        assertEquals(8L * 500000L * 512L, info.getFree());
    }

    @Test
    void testReadDataWireFormat_FileFsSizeInformation() throws Exception {
        // Test reading FS_SIZE_INFO data

        // Verify - all zeros should result in 0 capacity and free
        assertEquals(0L, smbInfoAllocation.getCapacity());
        assertEquals(0L, smbInfoAllocation.getFree());
    }

    @Test
    @DisplayName("Test getFree with maximum values")
    void testGetFreeWithMaximumValues() throws SMBProtocolDecodingException {
        // Prepare test data with maximum int values
        byte[] buffer = new byte[22];

            assertEquals(20, bytesDecoded);
            assertEquals(8L * 4096L * 512L, smbInfoAllocation.getCapacity());
            assertEquals(8L * 2048L * 512L, smbInfoAllocation.getFree());
        }

        @Test
        @DisplayName("Should calculate capacity correctly")
        void testCapacityCalculation() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[24];

        return this.ctx.getConfig();
    }

    private synchronized SmbTreeImpl getTree() {
        final SmbTreeImpl t = this.tree;
        if (t != null) {
            return t.acquire(false);
        }
        if (this.delegate != null) {
            this.tree = this.delegate.getTree();
            return this.tree;
        }
        return t;
    }

    /**
     * @return

        SmbPipeInputStream stream = newStreamWithMinimalStubs(true);

        // Arrange mocks for available()
        when(handle.ensureOpen()).thenReturn(fd);
        when(fd.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getConfig()).thenReturn(config);
        when(config.getTransactionBufferSize()).thenReturn(65535);

    // Prepare SMB2 flow with a given response
    private void setupSmb2(NotifyResponse resp, byte[] fileId) throws Exception {
        when(handle.isValid()).thenReturn(true);
        when(handle.getTree()).thenReturn(tree);
        when(tree.isSMB2()).thenReturn(true);
        when(tree.getConfig()).thenReturn(mock(Configuration.class));
        when(handle.getFileId()).thenReturn(fileId);

    }

    @Test
    @DisplayName("getTree() acquires and returns same tree instance")
    void getTree_acquiresAndReturnsTree() {
        when(cfg.isTraceResourceUsage()).thenReturn(false);
        stubValidTree(7L, true, true);

        SmbFileHandleImpl h = new SmbFileHandleImpl(cfg, 123, tree, "//server/share", 0, 0, 0, 0, 0L);

        SmbTreeHandleImpl t1 = h.getTree();
        SmbTreeHandleImpl t2 = h.getTree();