D --> F
```

## Testing Strategy

### Unit Tests
- Individual component testing for each feature
- Mock-based testing for protocol interactions
- State machine validation

### Integration Tests
- Feature interaction testing
- Network failure simulation
- Performance benchmarking
- Compatibility testing with Windows Server 2016/2019/2022

### Test Infrastructure Requirements

import jcifs.internal.NotifyResponse;
import jcifs.internal.smb1.trans.nt.NtTransNotifyChange;
import jcifs.internal.smb2.notify.Smb2ChangeNotifyRequest;

/**
 * Tests for SmbWatchHandleImpl focusing on behavior and interactions.
 */
@ExtendWith(MockitoExtension.class)
class SmbWatchHandleImplTest {

    @Mock
    SmbFileHandleImpl handle;

    @Mock
    SmbTreeHandleImpl tree;

            assertEquals(0, in.skip(0));
            assertEquals(0, in.skip(-1));
            assertEquals(5, in.skip(5));
        }
    }

    @Nested
    @DisplayName("SMB1 interactions")
    class Smb1Behavior {

        @Test
        @DisplayName("Named pipe: broken pipe maps to -1")
        void namedPipeBrokenPipeReturnsMinusOne() throws Exception {

import org.jspecify.annotations.Nullable;

/**
 * A helper for concurrency testing. One or more {@code TestThread} instances are instantiated in a
 * test with reference to the same "lock-like object", and then their interactions with that object
 * are choreographed via the various methods on this class.
 *
 * <p>A "lock-like object" is really any object that may be used for concurrency control. If the

        assertNotNull(logonInfo.getGroupSids());
        assertNotNull(logonInfo.getExtraSids());
        assertNotNull(logonInfo.getResourceGroupSids());

        // Verify mock interactions
        verify(logonInfo).getUserName();
        verify(logonInfo).getDomainName();
        verify(logonInfo).getServerName();
    }

    @Test
    @DisplayName("Test date conversion from FILETIME")

        assertFalse(it.hasNext(), "Iterator should be exhausted");

        // Close explicitly to exercise doCloseInternal
        it.close();

        // Verify interactions: one create, two additional directory queries (for fetchMore), one close
        verify(tree, times(1)).send(argThat((Request<?> r) -> r instanceof Smb2CreateRequest));

    @Mock
    private ServletOutputStream servletOutputStream;

    @BeforeEach
    void setUp() throws Exception {
        filter = new NtlmHttpFilter();

        // Setup lenient stubs for common mock interactions
        lenient().when(request.getSession()).thenReturn(httpSession);
        lenient().when(request.getSession(anyBoolean())).thenReturn(httpSession);

        when(config.isIpcSigningEnforced()).thenReturn(true);
        when(creds.isAnonymous()).thenReturn(true);
        assertFalse(ipc.shouldForceSigning());

        // Verify interactions sequence for one call
        InOrder inOrder = inOrder(config, creds);
        ipc = locator("smb://server/IPC$/");
        ipc.shouldForceSigning();
        inOrder.verify(config, atLeastOnce()).isIpcSigningEnforced();

    assertFalse("stopAsync has deadlocked!.", stoppingThread.isAlive());
    failLeave.countDown(); // release the background thread
  }

  /**
   * Catches a bug where when constructing a service manager failed, later interactions with the
   * service could cause IllegalStateExceptions inside the partially constructed ServiceManager.
   * This ISE wouldn't actually bubble up but would get logged by ExecutionQueue. This obfuscated

import org.jspecify.annotations.Nullable;

/**
 * An immutable well-formed internet domain name, such as {@code com} or {@code foo.co.uk}. Only
 * syntactic analysis is performed; no DNS lookups or other network interactions take place. Thus
 * there is no guarantee that the domain actually exists on the internet.
 *
 * <p>One common use of this class is to determine whether a given string is likely to represent an