}

    @Test
    @DisplayName("getSmbSession creates and then reuses matching session")
    void getSmbSession_createAndReuse() {
        // Arrange: minimal credentials chain so SmbSessionImpl constructor succeeds
        CredentialsInternal creds = mock(CredentialsInternal.class);
        when(ctx.getCredentials()).thenReturn(creds);

    @Test
    @DisplayName("Test writeParameterWordsWireFormat returns correct byte count")
    void testWriteParameterWordsWireFormatReturnValue() {
        byte[] dst = new byte[256];

        // Set up minimal transaction
        transaction.setSetupCount(0);

        // Execute for primary transaction
        int primaryBytes = transaction.writeParameterWordsWireFormat(dst, 0);

import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.CIFSException;
import jcifs.SidResolver;
import jcifs.dcerpc.rpc;

class SIDTest {

    // Helper to build a minimal sid_t
    private static rpc.sid_t buildSidT(byte revision, byte[] identAuth, int... subs) {
        rpc.sid_t s = new rpc.sid_t();
        s.revision = revision;
        s.sub_authority_count = (byte) subs.length;

    @BeforeEach
    void setUp() {
        // Setup will be done per test as needed
    }

    @Test
    void testConstructorWithMinimalParameters() throws UnknownHostException {
        // Test the constructor with minimal parameters
        mockName = new Name(mockConfig, "TESTHOST", 0x20, null);
        NbtAddress nbtAddress = new NbtAddress(mockName, testAddressInt, false, NbtAddress.H_NODE);

        assertNotNull(nbtAddress);

        }

        @ParameterizedTest
        @DisplayName("Should decode various sector and allocation configurations")
        @CsvSource({ "1000, 500, 600, 1, 512", // Minimal sectors per alloc
                "1000, 500, 600, 8, 512", // Typical configuration
                "1000, 500, 600, 64, 512", // Large allocation units
                "1000, 500, 600, 8, 4096", // 4K sectors

In many cases they will only copy a fragment of the code, but that's not enough to **reproduce the problem**.

* You can ask them to provide a <a href="https://stackoverflow.com/help/minimal-reproducible-example" class="external-link" target="_blank">minimal, reproducible, example</a>, that you can **copy-paste** and run locally to see the same error or behavior they are seeing, or to understand their use case better.

import jcifs.internal.smb2.Smb2Constants;
import jcifs.internal.util.SMBUtil;
import jcifs.smb.NtStatus;
import jcifs.smb.SmbException;

class Smb2IoctlResponseTest {

    // Helper: build a minimal SMB2 header with a given status
    private static byte[] buildHeader(int status) {
        byte[] hdr = new byte[64]; // SMB2 header is 64 bytes
        System.arraycopy(SMBUtil.SMB2_HEADER, 0, hdr, 0, 64);

    }

    @Test
    @DisplayName("Test decode returns correct bytes consumed")
    void testDecodeBytesConsumed() throws SMBProtocolDecodingException {
        // Prepare minimal buffer
        byte[] buffer = new byte[24];

        // Test with offset 0
        int bytesDecoded = response.decode(buffer, 0, 24);

    @Mock
    private sid_t mockSidT;

    private MsrpcLookupSids lookupSids;
    private jcifs.SID[] testSids;

    @BeforeEach
    void setUp() {
        // Setup is minimal - mocks are configured per test as needed
    }

    @Test
    void constructor_shouldInitializeWithValidParameters() {
        // Arrange
        jcifs.SID mockSid1 = mock(jcifs.SID.class);

    @Test
    void readWireFormat_shouldDelegateToParent() {
        // Arrange
        nodeStatusRequest = new NodeStatusRequest(mockConfig, mockName);
        byte[] src = new byte[200];
        // Setup minimal valid header
        src[0] = 0x00;
        src[1] = 0x01; // Transaction ID
        src[2] = 0x00; // Flags
        src[3] = 0x00; // Flags
        src[4] = 0x00;
        src[5] = 0x01; // Question count