}

    private static Stream<Arguments> provideVersionRanges() {
        return Stream.of(Arguments.of(DialectVersion.SMB202, DialectVersion.SMB202, new int[] { 0x0202 }),
                Arguments.of(DialectVersion.SMB202, DialectVersion.SMB210, new int[] { 0x0202, 0x0210 }),
                Arguments.of(DialectVersion.SMB210, DialectVersion.SMB300, new int[] { 0x0210, 0x0300 }),

    private static final long serialVersionUID = 1L;

    /**
     * Creates a new {@link FileAccessException} with the specified message code, arguments, and cause.
     *
     * @param messageCode
     *            the message code
     * @param args
     *            the message arguments
     * @param cause
     *            the cause
     */

class SMBProtocolDowngradeExceptionTest {

    /**
     * Provides messages including edge cases (null and empty) for parameterized testing.
     */
    static Stream<Arguments> messages() {
        return Stream.of(Arguments.of((String) null), Arguments.of(""), Arguments.of("unexpected downgrade"));
    }

    @Test
    @DisplayName("Default ctor: null message/cause; toString is class name; type hierarchy")

     * @param args
     *            Array of arguments
     */
    public EmptyArgumentException(final String argName, final String messageCode, final Object[] args) {
        this(argName, messageCode, args, null);
    }

    /**
     * Creates an {@link EmptyArgumentException}.
     *
     * @param argName
     *            Name of the argument
     * @param messageCode
     *            Message code
     * @param args

    class ParameterizedInit {
        static Stream<Arguments> validRanges() {
            byte[] src = new byte[] { 0, 1, 2, 3 };
            return Stream.of(Arguments.of(src, 0, 0, new byte[] {}), Arguments.of(src, 0, 4, new byte[] { 0, 1, 2, 3 }),
                    Arguments.of(src, 1, 2, new byte[] { 1, 2 }), Arguments.of(src, 3, 1, new byte[] { 3 }));
        }

    }

    private static Stream<Arguments> provideFlagCombinations() {
        return Stream.of(Arguments.of(0x0, false), Arguments.of(0x1, true), // DFS
                Arguments.of(0x2, true), // DFS_ROOT
                Arguments.of(0x3, true), // DFS | DFS_ROOT
                Arguments.of(0x8000, false), // ENCRYPT_DATA only
                Arguments.of(0x8001, true), // ENCRYPT_DATA | DFS

                Arguments.of(NbtException.ERR_NAM_SRVC, NbtException.FMT_ERR, "ERR_NAM_SRVC/FMT_ERR: Format ErrorUnknown error code: 1"),
                Arguments.of(NbtException.ERR_NAM_SRVC, NbtException.SRV_ERR, "ERR_NAM_SRVC/Unknown error code: 2"),
                Arguments.of(NbtException.ERR_NAM_SRVC, NbtException.IMP_ERR, "ERR_NAM_SRVC/Unknown error code: 4"),

    }

    static Stream<Arguments> validParams() {
        // fid 0x1234, lastWriteTime 0 -> UTime all 0xFF
        return Stream.of(Arguments.of(0x1234, 0L, new byte[] { 0x34, 0x12, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF }),
                // negative fid wraps around, lastWriteTime = 1000 -> 1 second -> int value 1

     */
    static Stream<org.junit.jupiter.params.provider.Arguments> validInputs() {
        return Stream.of(org.junit.jupiter.params.provider.Arguments.of(0x0001, 0x00000000),
                org.junit.jupiter.params.provider.Arguments.of(0xFFFF, 0x12345678),
                org.junit.jupiter.params.provider.Arguments.of(-1, -123456));
    }

    @ParameterizedTest
    @MethodSource("validInputs")

    }

    // Parameterized tests for String edge cases on getName
    static Stream<Arguments> nameProvider() {
        return Stream.of(Arguments.of("", "empty string is allowed"), Arguments.of(" ", "single space is preserved"),
                Arguments.of("复杂名.txt", "unicode name is preserved"), Arguments.of(null, "null name is passed through"));
    }