// Arrange
        byte[] dst = new byte[100];
        int dstIndex = 0;

        // Act
        int result = response.writeParametersWireFormat(dst, dstIndex);

        // Assert
        assertEquals(0, result);
    }

    @Test
    @DisplayName("writeDataWireFormat should return 0")
    void testWriteDataWireFormat() {
        // Arrange
        byte[] dst = new byte[100];

        testData = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };
    }

    @Test
    @DisplayName("Test sign method with valid parameters")
    void testSignWithValidParameters() {
        // Arrange
        int offset = 0;
        int length = testData.length;

        // Act
        signingDigest.sign(testData, offset, length, request, response);

        // Assert

            assertNull(context.getHashAlgos());
            assertNull(context.getSalt());
        }

        @Test
        @DisplayName("Should encode context correctly")
        void testEncode() {
            // Arrange
            context = new PreauthIntegrityNegotiateContext(mockConfig, testHashAlgos, testSalt);
            byte[] buffer = new byte[100];

            // Act
            int encodedSize = context.encode(buffer, 0);

    class ConstructorTests {

        @Test
        @DisplayName("Constructor with rpc.uuid_t should copy all fields correctly")
        void testConstructorWithRpcUuidT() {
            // Arrange
            rpc.uuid_t rpcUuid = new rpc.uuid_t();
            rpcUuid.time_low = TIME_LOW;
            rpcUuid.time_mid = TIME_MID;
            rpcUuid.time_hi_and_version = TIME_HI_AND_VERSION;

    @MethodSource("hexCases")
    @DisplayName("toString() renders lower-case hex with zero-padding")
    void toString_rendersHex(byte[] input, String expected) {
        // Arrange
        SecurityBlob blob = new SecurityBlob(input);

        // Act
        String actual = blob.toString();

        // Assert
        assertEquals(expected, actual, "Hex string should match expected format");

        }
        return out;
    }

    @Test
    @DisplayName("getNTHash: known vector for 'password'")
    void testGetNTHash_knownVector() {
        // Arrange
        String password = "password";
        // Known NT hash for "password" (UTF-16LE MD4)
        // This is a well-known test vector: password -> 8846F7EAEE8FB117AD06BDD830B7586C

class SmbEndOfFileExceptionTest {

    /**
     * Verifies the no-arg constructor sets the expected message, status, and no cause.
     */
    @Test
    void defaultConstructorSetsMessageAndStatus() {
        // Arrange & Act
        SmbEndOfFileException ex = new SmbEndOfFileException();

        // Assert
        assertEquals("Unexpectedly reached end of file", ex.getMessage(), "Default message must match");

 * </ul>
 */
final class TransWaitNamedPipeResponseTest {

    /**
     * Verify that the default constructor creates an instance.
     */
    @Test
    void constructorInitialisesInstance() {
        // Arrange & Act
        TransWaitNamedPipeResponse resp = new TransWaitNamedPipeResponse();
        // Assert
        assertNotNull(resp, "Instance should not be null");
    }

    /**

        @MethodSource("invalidShareEnumCases")
        void doShareEnum_invalidPath_throws(String url, String pathSuffix, boolean expectDirSlashMsg) throws Exception {
            // Arrange
            SmbFile parent = new SmbFile(url);

            // Act + Assert
            SmbException ex = assertThrows(SmbException.class, () -> SmbEnumerationUtil.doShareEnum(parent, "*", 0, null, null));

        return new DERSequence(v);
    }

    @Test
    @DisplayName("byte[] ctor: empty token throws PACDecodingException with clear message")
    void byteArrayConstructor_emptyToken_throws() {
        // Arrange
        byte[] empty = new byte[0];

        // Act + Assert
        PACDecodingException ex = assertThrows(PACDecodingException.class, () -> new KerberosApRequest(empty, new KerberosKey[0]));