*
 * @author Colin Decker
 */
@NullUnmarked
public class TestByteSink extends ByteSink implements TestStreamSupplier {

  private final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
  private final ImmutableSet<TestOption> options;

  private boolean outputStreamOpened;
  private boolean outputStreamClosed;

  public TestByteSink(TestOption... options) {
    this.options = ImmutableSet.copyOf(options);
  }

 *
 * @author Colin Decker
 */
@NullUnmarked
public class TestByteSink extends ByteSink implements TestStreamSupplier {

  private final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
  private final ImmutableSet<TestOption> options;

  private boolean outputStreamOpened;
  private boolean outputStreamClosed;

  public TestByteSink(TestOption... options) {
    this.options = ImmutableSet.copyOf(options);
  }

  public void testClosesOnErrors_whenWriteThrows() {
    TestByteSink failSink = new TestByteSink(WRITE_THROWS);
    assertThrows(IOException.class, () -> new TestByteSource(new byte[10]).copyTo(failSink));
    assertTrue(failSink.wasStreamClosed());
  }

  public void testClosesOnErrors_writingFromInputStreamThatThrows() throws IOException {
    TestByteSink okSink = new TestByteSink();

  public void testClosesOnErrors_whenWriteThrows() {
    TestByteSink failSink = new TestByteSink(WRITE_THROWS);
    assertThrows(IOException.class, () -> new TestByteSource(new byte[10]).copyTo(failSink));
    assertTrue(failSink.wasStreamClosed());
  }

  public void testClosesOnErrors_writingFromInputStreamThatThrows() throws IOException {
    TestByteSink okSink = new TestByteSink();

      new TestByteSource(new byte[10], READ_THROWS);
  private static final ByteSink BROKEN_CLOSE_SINK = new TestByteSink(CLOSE_THROWS);
  private static final ByteSink BROKEN_OPEN_SINK = new TestByteSink(OPEN_THROWS);
  private static final ByteSink BROKEN_WRITE_SINK = new TestByteSink(WRITE_THROWS);

  private static final ImmutableSet<ByteSource> BROKEN_SOURCES =

 *
 * @author Colin Decker
 */
@NullUnmarked
public class TestCharSink extends CharSink implements TestStreamSupplier {

  private final TestByteSink byteSink;

  public TestCharSink(TestOption... options) {
    this.byteSink = new TestByteSink(options);
  }

  public String getString() {
    return new String(byteSink.getBytes(), UTF_8);
  }

  @Override
  public boolean wasStreamOpened() {

 *
 * @author Colin Decker
 */
@NullUnmarked
public class TestCharSink extends CharSink implements TestStreamSupplier {

  private final TestByteSink byteSink;

  public TestCharSink(TestOption... options) {
    this.byteSink = new TestByteSink(options);
  }

  public String getString() {
    return new String(byteSink.getBytes(), UTF_8);
  }

  @Override
  public boolean wasStreamOpened() {

      new TestByteSource(new byte[10], READ_THROWS);
  private static final ByteSink BROKEN_CLOSE_SINK = new TestByteSink(CLOSE_THROWS);
  private static final ByteSink BROKEN_OPEN_SINK = new TestByteSink(OPEN_THROWS);
  private static final ByteSink BROKEN_WRITE_SINK = new TestByteSink(WRITE_THROWS);

  private static final ImmutableSet<ByteSource> BROKEN_SOURCES =