*
     * @throws CIFSException if an error occurs while opening the file
     */
    public void open() throws CIFSException {
        try (SmbFileHandleImpl fh = ensureOpen()) {}
    }

    /**
     * @param file
     * @param openFlags
     * @return
     * @throws SmbException
     */
    synchronized SmbFileHandleImpl ensureOpen() throws CIFSException {

public class CloseableUtilTest {

    /**
     * @throws Exception
     */
    @Test
    public void testClose() throws Exception {
        final NotifyOutputStream out = new NotifyOutputStream();
        CloseableUtil.close(out);
        assertThat(out.getNotify(), is("closed"));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testCloseNull() throws Exception {

     * @param response
     * @param params
     * @throws IOException
     * @throws SmbException
     * @throws TransportException
     * @throws EOFException
     */
    private <T extends CommonServerMessageBlock & Response> T sendComTransaction(final CommonServerMessageBlockRequest request,
            final T response, final Set<RequestParam> params) throws IOException, SmbException, TransportException, EOFException {

    void ensureDFSResolved_throws() throws Exception {
        // Arrange: configure the mock to throw
        doThrow(new CIFSException("DFS resolution failed")).when(handle).ensureDFSResolved();

        // Act + Assert: exception is propagated with message
        CIFSException ex = assertThrows(CIFSException.class, () -> handle.ensureDFSResolved());

   *
   * <p>This method always throws, and as such should be called as {@code throw closer.rethrow(e);}
   * to ensure the compiler knows that it will throw.
   *
   * @return this method does not return; it always throws
   * @throws IOException when the given throwable is an IOException
   */
  public RuntimeException rethrow(Throwable e) throws IOException {
    checkNotNull(e);
    thrown = e;

        protected long makeKey(Request request) throws IOException {
            return nextKey++;
        }

        @Override
        protected Long peekKey() throws IOException {
            if (recvException != null) {
                throw recvException;
            }
            return peekedKey;
        }

        @Override
        protected void doSend(Request request) throws IOException {

    void testGetDialectRevision() throws Exception {
        // Given
        setPrivateField(response, "dialectRevision", 0x0311);

        // When
        int dialect = response.getDialectRevision();

        // Then
        assertEquals(0x0311, dialect);
    }

    @Test
    @DisplayName("Should return server GUID")
    void testGetServerGuid() throws Exception {
        // Given

        @Override
        public void encode(NdrBuffer dst) throws NdrException {
            if (throwOnEncode) {
                throw new NdrException("Failed to encode");
            }
            // Simulate some encoding activity on the buffer
            dst.enc_ndr_long(123);
        }

        @Override
        public void decode(NdrBuffer src) throws NdrException {
            if (throwOnDecode) {

        // We need to create a proper ASN1TaggedObject with APPLICATION tag class
        // Create a custom base object that throws IOException
        ASN1Encodable badBase = new ASN1Encodable() {
            @Override
            public ASN1Primitive toASN1Primitive() {
                // Return a primitive that will throw IOException when getEncoded is called

     * Ensures that the file descriptor is openend
     *
     * @throws CIFSException if an error occurs opening the file
     */
    public void open() throws CIFSException {
        try (SmbFileHandleImpl fh = ensureOpen()) {}
    }

    /**
     * Closes this output stream and releases any system resources associated
     * with it.
     *
     * @throws IOException
     *             if a network error occurs
     */