@Mock
    private InputStream mockInputStream;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
        packet = new TestSessionServicePacket();
    }

    // Tests for static methods

    @Test
    @DisplayName("writeInt2 should correctly write 16-bit integer")
    void testWriteInt2() {
        byte[] dst = new byte[4];
        SessionServicePacket.writeInt2(0x1234, dst, 0);

import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 * Unit tests for the {@link ModelVersionUtils} utility class.
 * Tests model version detection, validation, upgrade logic, and namespace operations.
 */
@DisplayName("ModelVersionUtils")
class ModelVersionUtilsTest {

    @Nested

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@link ImmutableSortedMap}.
 *
 * @author Kevin Bourrillion
 * @author Jesse Wilson
 * @author Jared Levy
 */
@GwtCompatible
@SuppressWarnings("AlwaysThrows")
@NullMarked

public String getHandleStateDirectory() {
    return getProperty(HANDLE_STATE_DIR, 
        System.getProperty("user.home") + "/.jcifs/handles");
}
```

## 8. Testing Strategy

### 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() {

            });

    List<String> actual = newArrayList(result);
    List<String> expected = asList("1", "2", "null", "3");
    assertEquals(expected, actual);
  }

  // Far less exhaustive than the tests in IteratorsTest
  public void testCycle() {
    Iterable<String> cycle = Iterables.cycle("a", "b");

    int howManyChecked = 0;
    for (String string : cycle) {

			Err:            fmt.Sprintf("server is running the latest version: %s", Version),
			CurrentVersion: Version,
		})

		for _, client := range globalNotificationSys.peerClients {
			updateStatus.Results = append(updateStatus.Results, madmin.ServerPeerUpdateStatus{
				Host:           client.String(),
				Err:            fmt.Sprintf("server is running the latest version: %s", Version),
				CurrentVersion: Version,
			})

import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Unit tests for {@link CacheLoader}.
 *
 * @author Charles Fry
 */
@NullUnmarked
public class CacheLoaderTest extends TestCase {

  private static class QueuingExecutor implements Executor {

import com.google.common.annotations.GwtCompatible;
import java.util.Map.Entry;
import junit.framework.TestCase;
import org.jspecify.annotations.NullMarked;
import org.jspecify.annotations.Nullable;

/**
 * Tests for {@code AbstractMapEntry}.
 *
 * @author Mike Bostock
 */
@GwtCompatible
@NullMarked
public class AbstractMapEntryTest extends TestCase {
  private static final @Nullable String NK = null;

import static org.junit.Assert.assertThrows;

import java.io.ByteArrayOutputStream;
import java.util.Random;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * Tests for AbstractByteHasher.
 *
 * @author Colin Decker
 */
@NullUnmarked
public class AbstractByteHasherTest extends TestCase {

  public void testBytes() {

import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.UnsupportedEncodingException;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

/**
 * Tests for the SmbComNegotiate class.
 */
class SmbComNegotiateTest {

    private SmbComNegotiate smbComNegotiate;
    private static final String DIALECTS = "\u0002NT LM 0.12\u0000";

    @BeforeEach
    void setUp() {