// Unregister
        client.unregister(registration).get(5, TimeUnit.SECONDS);

        assertEquals(0, client.getActiveRegistrationCount());

        verify(mockRpc).register(any(WitnessRegisterRequest.class));
        verify(mockRpc).unregister(any(WitnessUnregisterRequest.class));

        client.close();
    }

    @Test
    void testGetWitnessServer() throws Exception {

        CIFSContext wrappedContext = context.withCredentials(newCreds);

        assertNotNull(wrappedContext);
        assertTrue(wrappedContext instanceof CIFSContextCredentialWrapper);
        // Verify that the new context uses the provided credentials
        assertEquals(newCreds, wrappedContext.getCredentials());
    }

    @Test
    void testWithAnonymousCredentials() {

        byte[] dest = new byte[5];

        int encodedLen = encodable.encode(dest, 0);

        // Verify encoded length
        assertEquals(3, encodedLen, "Encoded length should be equal to the specified length");

        // Verify content
        assertArrayEquals(new byte[] { 0x02, 0x03, 0x04, 0x00, 0x00 }, dest, "Encoded bytes should match the expected subset");
    }

    @Test

        // Verify bytes written (encode returns 40, which includes 4 padding bytes)
        assertEquals(40, bytesWritten);

        // Create a new FileBasicInfo and decode to verify encoding
        FileBasicInfo decoded = new FileBasicInfo();
        decoded.decode(buffer, startIndex, 36); // decode only reads 36 bytes

        // Verify the values match after round-trip

        short maxLength = 20;
        int pointer = 100;
        PacUnicodeString pacString = new PacUnicodeString(length, maxLength, pointer);

        // Verify that the object was created
        assertNotNull(pacString, "The PacUnicodeString object should not be null.");

        // Verify that the getters return the correct values
        assertEquals(length, pacString.getLength(), "The length should match the value provided in the constructor.");

        boolean inUse = pool.close();

        // Then: Should report in-use and call disconnect on all
        assertTrue(inUse, "Should report connections in use");
        verify(pooledSpy).disconnect(false, false);
        verify(nonPooledSpy).disconnect(false, false);
    }

    @Test
    @DisplayName("Should get challenge from server")
    void testGetChallenge() throws Exception {

            assertEquals(Integer.MAX_VALUE, request3.getContextType());
        }

        @Test
        @DisplayName("Should verify interface is Encodable")
        void testEncodableInterface() {
            NegotiateContextRequest request = new TestNegotiateContextRequest(1);

            // Verify the interface extends Encodable
            assertNotNull(request);
            assertTrue(request instanceof jcifs.Encodable);
        }

        // Create exception with default constructor
        TransportException exception = new TransportException();

        // Verify the exception is created and has no message
        assertNotNull(exception);
        assertNull(exception.getMessage());
        assertNull(exception.getCause());

        // Verify it's an instance of CIFSException
        assertTrue(exception instanceof CIFSException);
    }

    @Test

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;

import org.junit.jupiter.api.BeforeEach;

        // Unwrap then close both
        CustomSmbTree unwrapped = smbTree.unwrap(CustomSmbTree.class);
        smbTree.close();
        unwrapped.close();

        verify(smbTree).unwrap(CustomSmbTree.class);
        verify(smbTree).close();
        verify(customTree).close();
    }

    /**
     * Custom SmbTree interface for testing unwrap functionality.
     */
    interface CustomSmbTree extends SmbTree {