// Assert
        assertEquals("smb", url.getProtocol());
        assertEquals(SmbConstants.DEFAULT_PORT, url.getPort(), "Default port applied for root smb URL");
        assertNull(url.getRef(), "Ref should remain null for root URL");
    }

    @Test
    @DisplayName("parseURL: fragment is moved into path and ref cleared")
    void testParseURL_FragmentMovedToPath() throws MalformedURLException {

        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);

        assertEquals(512, info.bytesPerSect);
        assertEquals(1000L * 100 * 512, info.getCapacity(), "Capacity calculation should be correct");
        assertEquals(500L * 100 * 512, info.getFree(), "Free space calculation should be correct");
    }

    /**
     * Tests the readDataWireFormat method with the SMB_QUERY_FS_SIZE_INFO information level.
     */
    @Test

 *
 */
public interface SmbFileHandle extends AutoCloseable {

    /**
     * Returns the tree handle associated with this file handle
     *
     * @return the tree
     */
    SmbTreeHandle getTree();

    /**
     * Checks if this file handle is still valid
     *
     * @return whether the file descriptor is valid
     */
    boolean isValid();

    /**

        when(fileHandle.acquire()).thenReturn(fileHandle);
        when(fileHandle.isValid()).thenReturn(true);
        when(fileHandle.getTree()).thenReturn(tree);

        // Initially not open (isStale returns false when handle is null, not true)
        assertFalse(target.isOpen());
        assertFalse(target.isStale());

        return FS_FULL_SIZE_INFO;
    }

    @Override
    public long getCapacity() {
        return this.alloc * this.sectPerAlloc * this.bytesPerSect;
    }

    @Override
    public long getFree() {
        return this.free * this.sectPerAlloc * this.bytesPerSect;
    }

    /**
     * {@inheritDoc}
     *
     * @see jcifs.Decodable#decode(byte[], int, int)
     */
    @Override

            spec = "//" + spec;
            limit += 2;
        }
        super.parseURL(u, spec, start, limit);
        path = u.getPath();
        ref = u.getRef();
        if (ref != null) {
            path += '#' + ref;
        }
        port = u.getPort();
        if (port == -1) {
            port = getDefaultPort();
        }

            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];

    // 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);

            spec = "//" + spec;
            limit += 2;
        }
        super.parseURL(u, spec, start, limit);
        path = u.getPath();
        ref = u.getRef();
        if (ref != null) {
            path += '#' + ref;
        }
        port = u.getPort();
        if (port == -1) {
            port = getDefaultPort();
        }