if (total == 0) {
            return 100.0;
        }
        return (totalSuccesses.get() * 100.0) / total;
    }

    /**
     * Calculate availability
     *
     * @return availability as percentage (0-100)
     */
    private double calculateAvailability() {
        long total = totalRequests.get();
        if (total == 0) {
            return 100.0;
        }

        emptyGenerator = new EmptyGenerator();

        // Test that isAvailable returns true for EmptyGenerator
        assertTrue(emptyGenerator.isAvailable());
        // Test cached availability
        assertTrue(emptyGenerator.isAvailable());
    }

    public void test_isTarget() {
        // Initialize without container
        emptyGenerator = new EmptyGenerator();

    /**
     * Share capability indicating DFS support.
     */
    public static final int SMB2_SHARE_CAP_DFS = 0x8;

    /**
     * Share capability indicating continuous availability support.
     */
    public static final int SMB2_SHARE_CAP_CONTINUOUS_AVAILABILITY = 0x10;

    /**
     * Share capability indicating scale-out support.
     */

        Map<String, Object> docMap = new HashMap<>();
        docMap.put("mimetype", null);
        assertFalse(thumbnailGenerator.isTarget(docMap));
    }

    public void test_isAvailable() {
        // Test availability check
        assertTrue(thumbnailGenerator.isAvailable());
    }

    public void test_destroy() {
        // Test destroy method - should not throw exception
        thumbnailGenerator.destroy();

        case THREAD_POOL:
            return "Reduce concurrent operations or increase thread pool size";
        default:
            return "Check resource availability and retry";
        }
    }

    /**
     * Static factory for file handle exhaustion
     */
    public static SmbResourceException fileHandleExhausted(int errorCode) {

        customHook.hook(assistantDirector);

        // Verify that exception was handled
        assertTrue(exceptionHandled.get());
    }

    // Test with a custom ClassLoader to simulate class availability
    public void test_hook_withCustomClassLoader() throws Exception {
        // Create a custom ClassLoader that can control class loading behavior
        ClassLoader customClassLoader = new URLClassLoader(new URL[0], null) {

                    return this.handle.acquire();
                }

                // Wait for named pipe availability - called when pipe is not immediately available
                if (this.uncPath.startsWith("\\pipe\\")) {

import jcifs.CIFSContext;
import jcifs.dcerpc.DcerpcHandle;

/**
 * Client implementation for the SMB Witness RPC protocol (MS-SWN).
 * Provides communication with witness servers for monitoring SMB resource availability.
 */
public class WitnessRpcClient implements AutoCloseable {
    private static final Logger log = LoggerFactory.getLogger(WitnessRpcClient.class);

    private final InetAddress serverAddress;

    /** The name of this thumbnail generator. */
    protected String name;

    /** Maximum number of redirects to follow. */
    protected int maxRedirectCount = 10;

    /** Availability status of this generator. */
    protected Boolean available = null;

    /**
     * Registers this thumbnail generator with the thumbnail manager.
     */
    public void register() {

   * available for all platforms and configurations. If that implementation is unavailable, this
   * method falls back to {@code getStackTrace}. Callers that require the special implementation can
   * check its availability with {@link #lazyStackTraceIsLazy()}.
   *
   * <p>The expected (but not guaranteed) performance of the special implementation differs from