@GwtIncompatible // Non-UTF-8 Charset
  public void testWhyUsAsciiIsDangerous() {
    byte[] b1 = "朝日新聞".getBytes(Charsets.US_ASCII);
    byte[] b2 = "聞朝日新".getBytes(Charsets.US_ASCII);
    byte[] b3 = "????".getBytes(Charsets.US_ASCII);
    byte[] b4 = "ニュース".getBytes(Charsets.US_ASCII);
    byte[] b5 = "スューー".getBytes(Charsets.US_ASCII);
    // Assert they are all equal (using the transitive property)
    assertTrue(Arrays.equals(b1, b2));

    assertThat(fingerprint(stringA.getBytes(UTF_8)))
        .isNotEqualTo(fingerprint(stringB.getBytes(UTF_8)));

    // ISO 8859-1 only has 0-255 (ubyte) representation so throws away UTF-8 characters
    // greater than 127 (ie with their top bit set).
    // Don't attempt to do this in real code.
    assertEquals(
        fingerprint(stringA.getBytes(ISO_8859_1)), fingerprint(stringB.getBytes(ISO_8859_1)));
  }

    assertTrue(sink.wasStreamClosed());
    assertArrayEquals(new byte[] {1, 2, 3, 4}, sink.getBytes());
  }

  public void testWrite_bytes() throws IOException {
    assertArrayEquals(new byte[0], sink.getBytes());
    sink.write(bytes);

    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());
    assertArrayEquals(bytes, sink.getBytes());
  }

  public void testWriteFrom_inputStream() throws IOException {

    byte[] data = new byte[17];
    data[1] = 15;
    System.arraycopy("Kilroy was here".getBytes(Charsets.UTF_8), 0, data, 2, 15);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);
    assertEquals("Kilroy was here", in.readUTF());
  }

  public void testNewDataInput_readChar() {
    byte[] data = "qed".getBytes(Charsets.UTF_16BE);
    ByteArrayDataInput in = ByteStreams.newDataInput(data);

  private boolean outputStreamOpened;
  private boolean outputStreamClosed;

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

  byte[] getBytes() {
    return bytes.toByteArray();
  }

  @Override
  public boolean wasStreamOpened() {
    return outputStreamOpened;
  }

  @Override
  public boolean wasStreamClosed() {

    File asciiFile = getTestFile("ascii.txt");
    File i18nFile = getTestFile("i18n.txt");
    assertTrue(Arrays.equals(ASCII.getBytes(Charsets.US_ASCII), Files.toByteArray(asciiFile)));
    assertTrue(Arrays.equals(I18N.getBytes(Charsets.UTF_8), Files.toByteArray(i18nFile)));
    assertTrue(Arrays.equals(I18N.getBytes(Charsets.UTF_8), Files.asByteSource(i18nFile).read()));
  }

    assertEquals(bytes.length, source.copyTo(sink));
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
    assertTrue(sink.wasStreamOpened() && sink.wasStreamClosed());

    assertArrayEquals(bytes, sink.getBytes());
  }

  public void testRead_toArray() throws IOException {
    assertArrayEquals(bytes, source.read());
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

  }

  public void testToByteArray() throws IOException {
    URL resource = getClass().getResource("testdata/i18n.txt");
    assertThat(Resources.toByteArray(resource)).isEqualTo(I18N.getBytes(Charsets.UTF_8));
  }

  public void testReadLines() throws IOException {
    // TODO(chrisn): Check in a better resource
    URL resource = getClass().getResource("testdata/i18n.txt");

    assertHash(expected, murmur3_32().hashBytes(string.getBytes(charset)));
    assertHash(expected, murmur3_32_fixed().hashBytes(string.getBytes(charset)));
    assertHash(expected, murmur3_32().newHasher().putBytes(string.getBytes(charset)).hash());
    assertHash(expected, murmur3_32_fixed().newHasher().putBytes(string.getBytes(charset)).hash());
  }

  private boolean allBmp(String string) {

  @GwtIncompatible // Non-UTF-8 Charset
  public void testWhyUsAsciiIsDangerous() {
    byte[] b1 = "朝日新聞".getBytes(Charsets.US_ASCII);
    byte[] b2 = "聞朝日新".getBytes(Charsets.US_ASCII);
    byte[] b3 = "????".getBytes(Charsets.US_ASCII);
    byte[] b4 = "ニュース".getBytes(Charsets.US_ASCII);
    byte[] b5 = "スューー".getBytes(Charsets.US_ASCII);
    // Assert they are all equal (using the transitive property)
    assertTrue(Arrays.equals(b1, b2));