private CIFSContext mockContext;
    private Smb2QueryInfoRequest request;
    private byte[] testFileId;

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        mockContext = mock(CIFSContext.class);
        when(mockContext.getConfig()).thenReturn(mockConfig);
        when(mockConfig.getMaximumBufferSize()).thenReturn(65536);
        when(mockConfig.getListSize()).thenReturn(65536);

import org.junit.jupiter.params.provider.ValueSource;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

import jcifs.Configuration;
import jcifs.config.BaseConfiguration;
import jcifs.internal.smb1.trans.SmbComTransaction;
import jcifs.internal.util.SMBUtil;

/**
 * Test class for NetServerEnum2
 */
class NetServerEnum2Test {

    @Mock
    private Configuration mockConfig;

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

import jcifs.CIFSContext;
import jcifs.Configuration;
import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.util.SMBUtil;

@ExtendWith(MockitoExtension.class)
class Smb2LogoffRequestTest {

    @Mock
    Configuration configuration;

    @Mock
    CIFSContext cifsContext;

import org.junit.jupiter.params.provider.MethodSource;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.Configuration;
import jcifs.spnego.NegTokenInit;

@ExtendWith(MockitoExtension.class)
class Kerb5AuthenticatorTest {

    @Mock
    CIFSContext tc;

    @Mock
    Configuration config;

        Trans2QueryFSInformationResponse response =
                new Trans2QueryFSInformationResponse(Trans2QueryFSInformationResponse.SMB_INFO_ALLOCATION);
        byte[] buffer = new byte[20];
        // Mock data for SmbInfoAllocation
        // idFileSystem (4 bytes, skipped)
        writeInt4(100, buffer, 4); // sectPerAlloc
        writeInt4(1000, buffer, 8); // alloc
        writeInt4(500, buffer, 12); // free

        assertTrue(exception.getMessage().contains("config"));
    }

    /**
     * Test constructor with mock configuration
     */
    @Test
    @DisplayName("Test constructor with mock configuration")
    public void testConstructorWithMockConfig() {
        // Setup mock to return a valid PID
        when(mockConfig.getPid()).thenReturn(1234);

        // When

import static org.mockito.Mockito.when;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

class NdrSmallTest {

    @Mock
    private NdrBuffer mockNdrBuffer;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    @Test

This provider might be charging you per request, and calling it might take some extra time than if you had a fixed mock user for tests.

You probably want to test the external provider once, but not necessarily call it for every test that runs.

In this case, you can override the dependency that calls that provider, and use a custom dependency that returns a mock user, only for your tests.

import static org.mockito.Mockito.when;

import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import org.mockito.Mock;

/**
 * Test class for Credentials interface functionality
 */
@DisplayName("Credentials Interface Tests")
class CredentialsTest extends BaseTest {

    @Mock
    private Credentials mockCredentials;

    @Test
    @DisplayName("Should define interface methods")

import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.SmbTransport;
import jcifs.internal.CommonServerMessageBlock;

/**
 * Unit tests for ChannelInfo
 */
@ExtendWith(MockitoExtension.class)
class ChannelInfoTest {

    @Mock
    private SmbTransport mockTransport;

    @Mock
    private CommonServerMessageBlock mockOperation;