(java.util.concurrent.ConcurrentLinkedQueue<SmbTransportImpl>) nonPooledField.get(pool);

        // Create spies
        SmbTransportImpl pooledSpy = spy(pooled);
        SmbTransportImpl nonPooledSpy = spy(nonPooled);

        // Replace with spies (remove and add back for concurrent queues)
        connections.remove(pooled);
        connections.offer(pooledSpy);

    }

    @Test
    @DisplayName("handle: null password leaves PasswordCallback unset")
    void testHandleWithNullPasswordDoesNotSet() throws Exception {
        // Spy to override getPasswordAsCharArray() to return null
        JAASAuthenticator spyAuth = spy(new JAASAuthenticator("DOM", "user", null));
        when(spyAuth.getPasswordAsCharArray()).thenReturn(null);

        PasswordCallback pc = new PasswordCallback("pass:", false);

        int size = spy.size();
        byte[] buffer = new byte[8];
        int encoded = spy.encode(buffer, 0);
        int decoded = spy.decode(buffer, 0, 8);
        String str = spy.toString();

        // Verify all methods were called except toString (Mockito limitation)
        verify(spy).getFileInformationLevel();
        verify(spy).size();
        verify(spy).encode(buffer, 0);

import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.concurrent.atomic.AtomicInteger;

import org.junit.jupiter.api.DisplayName;

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;

import java.lang.reflect.Method;

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

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.when;

import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.nio.charset.StandardCharsets;

import org.junit.jupiter.api.BeforeEach;

        byte[] dst = new byte[100];
        int originalHexCode = 0x20;
        mockName.hexCode = originalHexCode;

        // Setup spy to verify writeQuestionSectionWireFormat is called
        NodeStatusRequest spyRequest = spy(nodeStatusRequest);
        doReturn(40).when(spyRequest).writeQuestionSectionWireFormat(any(byte[].class), anyInt());

        // Act

        // Mock the streams
        SmbPipeInputStream mockIn = mock(SmbPipeInputStream.class);
        SmbPipeOutputStream mockOut = mock(SmbPipeOutputStream.class);

        // Create spy and override getInput/getOutput
        SmbPipeHandleImpl spyHandle = spy(handle);
        doReturn(mockIn).when(spyHandle).getInput();
        doReturn(mockOut).when(spyHandle).getOutput();

        // Setup mock behavior

import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

        @Test
        @DisplayName("Should execute bind operation successfully")
        void testBindSuccess() throws DcerpcException, IOException {
            // Given: Spy to intercept sendrecv calls
            TestDcerpcHandle spyHandle = spy(new TestDcerpcHandle(mockContext, mockBinding));
            doNothing().when(spyHandle).sendrecv(any(DcerpcMessage.class));

            // When: Binding the handle