@ParameterizedTest
    @MethodSource("intErrorCodes")
    @DisplayName("int ctor: sets message and NT status as expected")
    void intConstructor_populatesMessageAndStatus(int errCode, int expectedStatus) {
        // Arrange & Act: create exception with error code
        SmbAuthException ex = new SmbAuthException(errCode);

        // Assert: type, message derived from code, status mapping, and no cause
        assertNotNull(ex);

        @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]));

    @Mock
    private Address remoteAddress;

    @BeforeEach
    void setUp() {
        // Common setup for mocks if needed
    }

    @Test
    void testGetContext() {
        // Arrange
        when(smbTransport.getContext()).thenReturn(cifsContext);

        // Act
        CIFSContext result = smbTransport.getContext();

        // Assert
        assertNotNull(result, "Context should not be null");

    @DisplayName("renew() behaviors across implementations")
    void renewBehaviorsAcrossImplementations(String label, Supplier<SmbRenewableCredentials> supplier, boolean expectSame,
            boolean expectNew) {
        // Arrange: create an implementation instance
        SmbRenewableCredentials impl = supplier.get();

        // Act: call renew
        CredentialsInternal renewed = impl.renew();

    @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");

    @DisplayName("unwrap, domain, anonymous/guest flags happy paths")
    void unwrap_and_flags_happy(boolean[] flags) {
        boolean anonymous = flags[0];
        boolean guest = flags[1];

        // Arrange
        Subject subject = new Subject();
        TestCredentials creds = new TestCredentials("DOMAIN", anonymous, guest, subject, false);

        // Act & Assert

    @Test
    @DisplayName("Default constructor yields REQUIRED Krb5 entry with empty options")
    void defaultConstructor_producesRequiredKrb5EntryWithEmptyOptions() {
        // Arrange
        StaticJAASConfiguration cfg = new StaticJAASConfiguration();

        // Act
        AppConfigurationEntry[] entries = cfg.getAppConfigurationEntry("ignored");

        // Assert

        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);

            return 0;
        }
    }

    @Test
    @DisplayName("Happy path: iterates and adapts entries without filter")
    void happyPath_noFilter_returnsAdaptedResources() throws Exception {
        // Arrange: two valid entries
        setupParentForUrlCreation();
        StubFileEntry e1 = new StubFileEntry("SERVER1", SmbConstants.TYPE_SERVER);
        StubFileEntry e2 = new StubFileEntry("SERVER2", SmbConstants.TYPE_SERVER);