}

  @GwtIncompatible // Chars.fromByteArray, Chars.toByteArray
  public void testByteArrayRoundTripsFails() {
    assertThrows(IllegalArgumentException.class, () -> Chars.fromByteArray(new byte[] {0x11}));
  }

  public void testEnsureCapacity() {
    assertThat(Chars.ensureCapacity(EMPTY, 0, 1)).isSameInstanceAs(EMPTY);
    assertThat(Chars.ensureCapacity(ARRAY1, 0, 1)).isSameInstanceAs(ARRAY1);

        }

        @Test
        @DisplayName("setAttributes should accept valid attributes")
        void testSetAttributes() throws CIFSException {
            // Given
            int newAttributes = 0x01; // FILE_ATTRIBUTE_READONLY

            // When/Then
            assertDoesNotThrow(() -> mockResource.setAttributes(newAttributes), "Setting attributes should not throw exception");

    --hash=sha256:9fe5d24221b29625dbc7328b0436ca7fc1c23de4acf4d272f1180856e32f9f60 \
    --hash=sha256:ef687163c24185ae9754ed5650eb5bc4d84ff257aabdc33f0cc6f74d8ba54530
    # via tb-nightly
tensorflow-io-gcs-filesystem==0.37.1 ; python_version <= "3.12" \
    --hash=sha256:0df00891669390078a003cedbdd3b8e645c718b111917535fa1d7725e95cdb95 \
    --hash=sha256:249c12b830165841411ba71e08215d0e94277a49c551e6dd5d72aab54fe5491b \

    --hash=sha256:9fe5d24221b29625dbc7328b0436ca7fc1c23de4acf4d272f1180856e32f9f60 \
    --hash=sha256:ef687163c24185ae9754ed5650eb5bc4d84ff257aabdc33f0cc6f74d8ba54530
    # via tb-nightly
tensorflow-io-gcs-filesystem==0.37.1 ; python_version <= "3.12" \
    --hash=sha256:0df00891669390078a003cedbdd3b8e645c718b111917535fa1d7725e95cdb95 \
    --hash=sha256:249c12b830165841411ba71e08215d0e94277a49c551e6dd5d72aab54fe5491b \

    --hash=sha256:9fe5d24221b29625dbc7328b0436ca7fc1c23de4acf4d272f1180856e32f9f60 \
    --hash=sha256:ef687163c24185ae9754ed5650eb5bc4d84ff257aabdc33f0cc6f74d8ba54530
    # via tb-nightly
tensorflow-io-gcs-filesystem==0.37.1 ; python_version <= "3.12" \
    --hash=sha256:0df00891669390078a003cedbdd3b8e645c718b111917535fa1d7725e95cdb95 \
    --hash=sha256:249c12b830165841411ba71e08215d0e94277a49c551e6dd5d72aab54fe5491b \

     */
    private static byte[] messageHeader(int length) {
        byte[] h = new byte[4];
        h[0] = (byte) SessionServicePacket.SESSION_MESSAGE;
        h[1] = (byte) ((length >> 16) & 0x01);
        h[2] = (byte) ((length >> 8) & 0xFF);
        h[3] = (byte) (length & 0xFF);
        return h;
    }

    /**
     * Creates a NetBIOS keep-alive header.

    private NameServiceClient mockNameServiceClient;
    @Mock
    private BaseConfiguration mockConfig;

    private int testAddressInt = 0xC0A80101; // 192.168.1.1
    private byte[] testMacAddress = new byte[] { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 };

    @BeforeEach
    void setUp() {
        // Setup will be done per test as needed
    }

    @Test
    void testConstructorWithMinimalParameters() throws UnknownHostException {

        // Write READ response body
        int dataLength = 20;
        int dataRemaining = 0;
        int dataOffsetFromHeader = 80;

        // Structure size (17 = 0x11)
        SMBUtil.writeInt2(17, buffer, bodyStart);
        // Data offset (byte - offset from header start)
        buffer[bodyStart + 2] = (byte) dataOffsetFromHeader;
        // Reserved

                    }
                } else if (host.length() == 0) {
                    try {
                        final Address addr = this.ctx.getNameServiceClient().getNbtByName(NbtAddress.MASTER_BROWSER_NAME, 0x01, null);
                        this.addresses = new UniAddress[1];
                        this.addresses[0] = this.ctx.getNameServiceClient().getByName(addr.getHostAddress());

        response.readBytesWireFormat(buffer, bufferIndex);

        // Verify results is now set (even if empty)
        assertNotNull(response.getResults());
    }

    @ParameterizedTest
    @CsvSource({ "0x01, FILE_DIRECTORY_INFO", "0x02, FILE_FULL_DIRECTORY_INFO", "0x03, FILE_BOTH_DIRECTORY_INFO" })
    @DisplayName("Test constructor with different info class constants")