}

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

        @Test

        assertTrue(response.getInfo() instanceof SmbInfoAllocation);

        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

            // When
            fileFsSizeInfo.decode(buffer.array(), 0, 24);
            double percentFree = (fileFsSizeInfo.getFree() * 100.0) / fileFsSizeInfo.getCapacity();
            double percentUsed = ((fileFsSizeInfo.getCapacity() - fileFsSizeInfo.getFree()) * 100.0) / fileFsSizeInfo.getCapacity();

            // Then
            assertEquals(25.0, percentFree, 0.001);
            assertEquals(75.0, percentUsed, 0.001);
        }
    }

            double percentFree = (fileFsFullSizeInfo.getFree() * 100.0) / fileFsFullSizeInfo.getCapacity();
            double percentUsed =
                    ((fileFsFullSizeInfo.getCapacity() - fileFsFullSizeInfo.getFree()) * 100.0) / fileFsFullSizeInfo.getCapacity();

            // Then
            assertEquals(25.0, percentFree, 0.001);
            assertEquals(75.0, percentUsed, 0.001);

        long expectedCapacity = alloc * sectPerAlloc * bytesPerSect;
        assertEquals(expectedCapacity, smbInfoAllocation.getCapacity());

        long expectedFree = free * sectPerAlloc * bytesPerSect;
        assertEquals(expectedFree, smbInfoAllocation.getFree());
    }

    @Test
    @DisplayName("Test getCapacity with zero values")
    void testGetCapacityWithZeroValues() throws SMBProtocolDecodingException {

            assertEquals(4L * 8192L * 1024L, smbInfoAllocation.getCapacity());
        }

        @Test
        @DisplayName("Should handle zero values")
        void testZeroValues() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[24];

            smbInfoAllocation.decode(buffer, 0, buffer.length);

            assertEquals(0, smbInfoAllocation.getCapacity());

        assertEquals(50, ndrBuffer.getIndex());
    }

    @Test
    void testGetCapacity() {
        assertEquals(buffer.length, ndrBuffer.getCapacity());

        NdrBuffer offsetBuffer = new NdrBuffer(buffer, 100);
        assertEquals(buffer.length - 100, offsetBuffer.getCapacity());
    }

    @Test
    void testGetTailSpace() {
        ndrBuffer.setIndex(100);

    public void setIndex(final int index) {
        this.index = index;
    }

    /**
     * Returns the capacity of the buffer.
     *
     * @return the buffer capacity
     */
    public int getCapacity() {
        return buf.length - start;
    }

    /**
     * Returns the available space at the tail of the buffer.
     *
     * @return the available tail space
     */

    public void setIndex(final int index) {
        this.index = index;
    }

    /**
     * Returns the capacity of the buffer.
     *
     * @return the buffer capacity
     */
    public int getCapacity() {
        return this.buf.length - this.start;
    }

    /**
     * Returns the available space at the tail of the buffer.
     *
     * @return the available tail space
     */