*
 * @since 14.0
 * @author Colin Decker
 */
@J2ktIncompatible
@GwtIncompatible
public abstract class CharSink {

  /** Constructor for use by subclasses. */
  protected CharSink() {}

  /**
   * Opens a new {@link Writer} for writing to this sink. This method returns a new, independent
   * writer each time it is called.
   *
   * <p>The caller is responsible for ensuring that the returned writer is closed.
   *

   * being deleted. This can happen if, after checking that a file is a directory (and not a
   * symbolic link), that directory is deleted and replaced by a symbolic link to an outside
   * directory before the call that opens the directory to read its entries. File systems that
   * support {@code SecureDirectoryStream} do not have this vulnerability.
   */
  ALLOW_INSECURE

  public void close() throws IOException {
    if (in != null) {
      try {
        in.close();
      } finally {
        in = null;
      }
    }
  }

  /** Closes the current input stream and opens the next one, if any. */
  private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      in = it.next().openStream();
    }
  }

  @Override

  private @Nullable Reader current;

  MultiReader(Iterator<? extends CharSource> readers) throws IOException {
    this.it = readers;
    advance();
  }

  /** Closes the current reader and opens the next one, if any. */
  private void advance() throws IOException {
    close();
    if (it.hasNext()) {
      current = it.next().openStream();
    }
  }

  @Override

    public static final int SMB2_IMPERSONATION_LEVEL_DELEGATE = 0x3;

    /**
     * Enable other opens for read access
     */
    public static final int FILE_SHARE_READ = 0x1;

    /**
     * Enable other opens for write access
     */
    public static final int FILE_SHARE_WRITE = 0x2;

    /**
     * Enable other opens for delete access
     */
    public static final int FILE_SHARE_DELETE = 0x4;

    /**

   * the source will contain the concatenated data from the streams of the underlying sources.
   *
   * <p>Only one underlying stream will be open at a time. Closing the concatenated stream will
   * close the open underlying stream.
   *
   * @param sources the sources to concatenate
   * @return a {@code CharSource} containing the concatenated data
   * @since 15.0
   */

   * the source will contain the concatenated data from the streams of the underlying sources.
   *
   * <p>Only one underlying stream will be open at a time. Closing the concatenated stream will
   * close the open underlying stream.
   *
   * @param sources the sources to concatenate
   * @return a {@code CharSource} containing the concatenated data
   * @since 15.0
   */

            return advance(true);
        }
        return null;
    }

    /**
     * Opens the enumeration and returns the first entry.
     *
     * @return the first file entry, or null if empty
     * @throws CIFSException if an error occurs during opening
     */
    protected abstract FileEntry open() throws CIFSException;

    /**
     * Checks if the enumeration is complete.
     *

 * </pre>
 *
 * </td>
 * <td>
 * Open the Named Pipe foo for reading and writing. The pipe will behave like the <code>CallNamedPipe</code> interface.
 * </td>
 * </tr>
 * <tr>
 * <td >
 *
 * <pre>
 * new SmbNamedPipe("smb://server/IPC$/foo", SmbNamedPipe.PIPE_TYPE_RDWR | SmbNamedPipe.PIPE_TYPE_TRANSACT, context);
 * </pre>
 *
 * </td>
 * <td>

            // Expected
        }

        assertEquals(SimpleCircuitBreaker.State.OPEN, circuitBreaker.getState());
    }

    @Test
    @DisplayName("Test reset functionality")
    void testReset() {
        // Open the circuit
        circuitBreaker.tripBreaker();
        assertEquals(SimpleCircuitBreaker.State.OPEN, circuitBreaker.getState());

        // Reset
        circuitBreaker.reset();