import org.junit.jupiter.api.Test;

import jcifs.internal.smb2.persistent.HandleGuid;

/**
 * Test class for HandleGuid functionality
 */
public class HandleGuidTest {

    @Test
    public void testHandleGuidGeneration() {
        HandleGuid guid1 = new HandleGuid();
        HandleGuid guid2 = new HandleGuid();

        assertNotEquals(guid1, guid2);
        assertEquals(16, guid1.toBytes().length);

### 8.1 Unit Tests
```java
package jcifs.tests.smb3;

import org.junit.Test;
import static org.junit.Assert.*;

public class PersistentHandleTest {
    
    @Test
    public void testHandleGuidGeneration() {
        HandleGuid guid1 = new HandleGuid();
        HandleGuid guid2 = new HandleGuid();
        
        assertNotEquals(guid1, guid2);
        assertEquals(16, guid1.toBytes().length);