@BeforeEach
    void setUp() {
        // Create a fresh pool instance for each test
        pool = new SmbTransportPoolImpl();

        // Setup default mock behaviors
        when(ctx.getConfig()).thenReturn(config);
        when(ctx.getNameServiceClient()).thenReturn(nameSvc);
        when(ctx.getCredentials()).thenReturn(creds);
        when(ctx.getTransportPool()).thenReturn(pool);

            assertThrows(NullPointerException.class, () -> SmbEnumerationUtil.doEnum(null, "*", 0, null, null));
        }
    }

    @Nested
    @DisplayName("Wrapper behaviors")
    class WrapperBehaviorTests {

        @Test
        void resourceFilterWrapper_accept_falseForNonSmbFile_andNoDelegation() throws Exception {
            // Arrange

            assertEquals(type, sid.getType());
            assertEquals(text, sid.getTypeText());
        }

        @Test
        @DisplayName("getDomainName and getAccountName behaviors for unknown, domain, and user")
        void testNamesByType() {
            byte[] ident = new byte[] { 0, 0, 0, 0, 0, 5 };
            // Unknown: domainName derived from numeric SID, accountName = RID

            assertNotNull(combined);
        }
    }

    @Nested
    @DisplayName("Mock Behavior Verification Tests")
    class MockBehaviorTests {

        @Test
        @DisplayName("Should verify all interface methods can be mocked")
        void testAllMethodsCanBeMocked() {
            // Setup all mock behaviors
            when(mockReferralData.getExpiration()).thenReturn(1000L);

    // Mocking MsrpcLsarOpenPolicy2 and MsrpcLsarClose is tricky because they are created inside the constructor/method.
    // We need to use ArgumentCaptor or a custom Answer to control their behavior.
    // For now, let's assume we can mock their behavior through the sendrecv method of DcerpcHandle.

    @BeforeEach
    void setUp() {
        // MockitoAnnotations.openMocks(this); // Not needed with @ExtendWith(MockitoExtension.class)
    }

        mockNotifications.add(fileNotifyInfo3);
    }

    /**
     * Test watch() method returning notifications
     */
    @Test
    void testWatch() throws CIFSException {
        // Setup mock behavior
        when(watchHandle.watch()).thenReturn(mockNotifications);

        // Execute
        List<FileNotifyInformation> result = watchHandle.watch();

        // Verify
        assertNotNull(result);

        // Default constructor
    }

    /** Default client invoke names for DBFlute behavior invocation. */
    protected static final String[] DEFAULT_CLIENT_INVOKE_NAMES = { "Page", "Action", "Controller", "ControllerImpl", "Task", "Test" };

    /** Default bypass invoke names for DBFlute behavior invocation. */
    protected static final String[] DEFAULT_BYPASS_INVOKE_NAMES =

**Describe the bug**
A clear and concise description of what the bug is.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Describe the bug**
A clear and concise description of what the bug is.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

**Expected behavior**
A clear and concise description of what you expected to happen.

**Screenshots**
If applicable, add screenshots to help explain your problem.

        // Close the stream
        outputStream.close();

        // When & Then - after close, tmp is null so write(int) will throw NullPointerException
        // This is the actual behavior of the implementation
        assertThrows(NullPointerException.class, () -> outputStream.write(65));
    }

    @Test
    void testWriteNullArray() throws CIFSException {
        // Given