* We can't instantiate the class with null, so we can't directly test this method's behavior with null.
     * However, the constructor logic `!isCredentialTypeCorrect()` covers this.
     * If `new PacCredentialType(null)` throws, it implies `isCredentialTypeCorrect()` returned false for null.
     */
    @Test
    void testIsCredentialTypeCorrectWithNullData() {

        new DosFileFilter("file.txt", SmbFile.ATTR_READONLY | SmbFile.ATTR_HIDDEN);
    }

    /**
     * Parameterized test for the {@link DosFileFilter#accept(SmbFile)} method.
     * This test covers various combinations of file attributes and filter attributes
     * to ensure the bitwise logic is correctly implemented.
     *
     * @param filterAttributes The attributes set for the filter.

 */
package jcifs.smb;

import jcifs.CIFSException;

/**
 * Exception thrown when an SMB protocol downgrade attack is detected.
 * Indicates that the negotiated protocol version is lower than expected or required.
 *
 * @author mbechler
 *
 */
public class SMBProtocolDowngradeException extends CIFSException {

    /**
     * Serial version UID for serialization compatibility.
     */

    }

    // Verifies that toString() formats bytes as lower-case hex with zero-padding
    @ParameterizedTest(name = "toString renders hex for {0}")
    @MethodSource("hexCases")
    @DisplayName("toString() renders lower-case hex with zero-padding")
    void toString_rendersHex(byte[] input, String expected) {
        // Arrange

     */
    String minKey() default StringUtil.EMPTY;

    /**
     * Gets the configuration key for the maximum size constraint.
     *
     * @return name of size the element must be lower or equal to
     */
    String maxKey() default StringUtil.EMPTY;

                "The error string should match the expected message for given error class and code");
    }

    /**
     * Provides arguments for the testGetErrorString parameterized test.
     * Covers all defined error classes and codes, including default cases.
     */
    private static Stream<Arguments> provideErrorClassAndCodeForGetErrorString() {
        return Stream.of(
                // SUCCESS

    /** Transliterator for any-lower. */
    protected Transliterator anyLower;

    /**
     * Constructor for KatakanaToAlphabetConverter.
     */
    public KatakanaToAlphabetConverter() {
        fullWidthHalfWidth = Transliterator.getInstance("Fullwidth-Halfwidth");
        anyLower = Transliterator.getInstance("Any-Lower");
    }

    @Override
    public void init() throws IOException {

    }

    /**
     * Sets a range of characters as word characters.
     *
     * @param ctype2
     *            The array of character types.
     * @param low
     *            The lower bound of the character range (inclusive).
     * @param hi
     *            The upper bound of the character range (inclusive).
     */
    protected static void wordChars(final byte[] ctype2, int low, int hi) {

        SmbComLockingAndX copy = new SmbComLockingAndX(cfg);
        copy.readParameterWordsWireFormat(buf, 0);
        assertTrue((boolean) getField(copy, "largeFile"));
    }

    /**
     * Test toString covers basic output.
     */
    @Test
    void toStringInclusion() {
        Configuration cfg = mock(Configuration.class);
        SmbComLockingAndX cmd = new SmbComLockingAndX(cfg);
        setField(cmd, "fid", 42);

            // Given: An input value
            // When: Creating NdrShort with that value
            NdrShort ndrShort = new NdrShort(inputValue);

            // Then: Value should be masked with 0xFF (lower 8 bits)
            assertEquals(inputValue & 0xFF, ndrShort.value, "Constructor should mask value with 0xFF");
        }

        @Test
        @DisplayName("Should handle zero value correctly")