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);

    /**
     * Helper method to create a fully mocked CIFSContext with all necessary dependencies
     */
    private CIFSContext createMockContext() {
        CIFSContext mockContext = mock(CIFSContext.class);
        Configuration mockConfig = mock(Configuration.class);
        NameServiceClient mockNameServiceClient = mock(NameServiceClient.class);
        NetbiosAddress mockHost = mock(NetbiosAddress.class);

        rateLimiter.recordFailure(username, ip);

        // After 3 failures, account should be locked
        try {
            rateLimiter.checkAttempt(username, ip);
            fail("Should throw SmbException for locked account");
        } catch (SmbException e) {
            assertTrue(e.getMessage().contains("locked out"), "Should indicate account lockout");
        }
    }

    @Test

            recentAttempts.set(0);
            blocked.set(false);
            blockExpiry = null;
            windowStart = Instant.now();
        }

        void block(Duration duration) {
            blocked.set(true);
            blockExpiry = Instant.now().plus(duration);
        }

        boolean isBlocked() {
            return blocked.get();
        }

        int getRecentAttempts() {

    // file attribute encoding
    /**
     * File is marked read-only
     */
    int ATTR_READONLY = 0x01;
    /**
     * File is marked hidden
     */
    int ATTR_HIDDEN = 0x02;
    /**
     * File is marked a system file
     */
    int ATTR_SYSTEM = 0x04;
    /**
     * File is marked a volume
     */
    int ATTR_VOLUME = 0x08;
    /**
     * File is a directory

                final boolean closed = msg != null && msg.equals("Socket closed");

                if (closed) {
                    log.trace("Remote closed connection");
                } else if (timeout) {
                    log.debug("socket timeout in non peek state", ex);
                } else {
                    log.debug("recv failed", ex);
                }

    @Mock
    private MessageDigest mockMd5;

    @BeforeEach
    void setUp() throws NoSuchAlgorithmException {
        // Mock Crypto.getMD5() to return our mockMd5 instance
        // This requires Mockito 3.4.0+ for MockedStatic
        // For simplicity, we'll assume Crypto.getMD5() is static and mock it.
        // If it's not static, we'd need to inject it or mock the class that provides it.

    @Test
    void constructor_shouldPreservePolicyHandleReference() throws Exception {
        // Arrange
        jcifs.SID mockSid = mock(jcifs.SID.class);
        when(mockSid.unwrap(sid_t.class)).thenReturn(mockSidT);
        testSids = new jcifs.SID[] { mockSid };
        LsaPolicyHandle specificHandle = mock(LsaPolicyHandle.class);

        // Act
        lookupSids = new MsrpcLookupSids(specificHandle, testSids);

import static org.mockito.Mockito.mock;

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

import jcifs.smb.SID;

/**
 * Tests for the {@link PacGroup} class.
 */
class PacGroupTest {

    private SID mockSid;
    private PacGroup pacGroup;
    private final int attributes = 42;

    @BeforeEach
    void setUp() {
        // Mock the SID object
        mockSid = mock(SID.class);

import org.mockito.ArgumentCaptor;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.dcerpc.DcerpcHandle;
import jcifs.dcerpc.rpc;
import jcifs.smb.SmbException;

@ExtendWith(MockitoExtension.class)
class SamrDomainHandleTest {

    @Mock
    private DcerpcHandle mockDcerpcHandle;
    @Mock
    private SamrPolicyHandle mockPolicyHandle;
    @Mock