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;

        }
        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

    @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");

        LocaleUtil.setDefault(null);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testErrorMessage_ja() throws Exception {
        // ## Arrange ##
        Locale.setDefault(Locale.JAPANESE);
        final NullArgumentException nullArgumentException = new NullArgumentException("hoge");
        assertThat(nullArgumentException.getArgName(), is("hoge"));

        LocaleUtil.setDefault(null);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testErrorMessage_ja() throws Exception {
        // ## Arrange ##
        Locale.setDefault(Locale.JAPANESE);
        final SQLException sqlException = new SQLException("some reason", "fooState", 7650);
        final SQLException sqlException2 = new SQLException("hoge reason", "barState", 7660);

        @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]));

    @Test
    @DisplayName("Default ctor: null message/cause and success status")
    void defaultConstructor_hasNullMessageAndCause_andDefaultStatus() {
        // Arrange & Act
        SMBSignatureValidationException ex = new SMBSignatureValidationException();

        // Assert
        assertNull(ex.getMessage(), "Default ctor should not set a message");

        }
        throw new NoSuchFieldException(name);
    }

    @Test
    @DisplayName("getResponseTimeout returns override for SMB requests")
    void getResponseTimeout_override() {
        // Arrange
        CommonServerMessageBlockRequest req = mock(CommonServerMessageBlockRequest.class);
        when(req.getOverrideTimeout()).thenReturn(1234);

        // Act
        int timeout = transport.getResponseTimeout(req);