static final CharSource BROKEN_CLOSE_SOURCE = new TestCharSource("ABC", CLOSE_THROWS);
  static final CharSource BROKEN_OPEN_SOURCE = new TestCharSource("ABC", OPEN_THROWS);
  static final CharSink BROKEN_WRITE_SINK = new TestCharSink(WRITE_THROWS);
  static final CharSink BROKEN_CLOSE_SINK = new TestCharSink(CLOSE_THROWS);
  static final CharSink BROKEN_OPEN_SINK = new TestCharSink(OPEN_THROWS);

  private static final ByteSource BROKEN_CLOSE_SOURCE =
      new TestByteSource(new byte[10], CLOSE_THROWS);
  private static final ByteSource BROKEN_OPEN_SOURCE =
      new TestByteSource(new byte[10], OPEN_THROWS);
  private static final ByteSource BROKEN_READ_SOURCE =
      new TestByteSource(new byte[10], READ_THROWS);
  private static final ByteSink BROKEN_CLOSE_SINK = new TestByteSink(CLOSE_THROWS);

  @Override
  public void write(int b) throws IOException {
    throwIf(closed);
    throwIf(WRITE_THROWS);
    super.write(b);
  }

  @Override
  public void close() throws IOException {
    closed = true;
    super.close();
    throwIf(CLOSE_THROWS);
  }

  private void throwIf(TestOption option) throws IOException {
    throwIf(options.contains(option));
  }

    ((DataOutputStream) out).writeUTF(str);
  }

  // Overriding close() because FilterOutputStream's close() method pre-JDK8 has bad behavior:
  // it silently ignores any exception thrown by flush(). Instead, just close the delegate stream.
  // It should flush itself if necessary.
  @Override
  public void close() throws IOException {
    out.close();
  }

    } finally {
      closer.close();
    }
  }

  /**
   * Concatenates multiple {@link CharSource} instances into a single source. Streams returned from
   * 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.
   *

      // skip may not be supported... at any rate, try reading
    } finally {
      closer.close();
    }

    closer = Closer.create();
    try {
      InputStream in = closer.register(openStream());
      return ByteStreams.exhaust(in);
    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.common.io;

import static com.google.common.io.TestOption.CLOSE_THROWS;
import static com.google.common.io.TestOption.OPEN_THROWS;
import static com.google.common.io.TestOption.READ_THROWS;
import static com.google.common.io.TestOption.WRITE_THROWS;

    }
  }

  /**
   * Calls {@link #close} if not already closed, and then resets this object back to its initial
   * state, for reuse. If data was buffered to a file, it will be deleted.
   *
   * @throws IOException if an I/O error occurred while deleting the file buffer
   */
  public synchronized void reset() throws IOException {
    try {
      close();
    } finally {
      if (memory == null) {

  }

  private final class Out extends TestOutputStream {

    public Out() throws IOException {
      super(bytes, options);
    }

    @Override
    public void close() throws IOException {
      outputStreamClosed = true;
      super.close();
    }
  }

    } catch (Throwable e) {
      throw closer.rethrow(e);
    } finally {
      closer.close();
    }
  }

  /**
   * Writes all the bytes from the given {@code InputStream} to this sink. Does not close {@code
   * input}.
   *
   * @return the number of bytes written