@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)
    assertThat(b1).isEqualTo(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)));
  }

      @Override
      public CharSource createSource(String string) throws IOException {
        return factory.createSource(string.getBytes(UTF_8)).asCharSource(UTF_8);
      }

      @Override
      public String getExpected(String data) {
        return new String(factory.getExpected(data.getBytes(UTF_8)), UTF_8);
      }

      @Override
      public void tearDown() throws IOException {
        factory.tearDown();

    }

    @Test
    void calculateByte() throws IOException {
        Map<ChecksumAlgorithmService.ChecksumAlgorithm, String> checksums = service.calculate(
                "test".getBytes(StandardCharsets.UTF_8), service.select(Arrays.asList("SHA-1", "MD5")));
        assertNotNull(checksums);
        assertEquals(2, checksums.size());

  public void testSomeOtherKnownValues() {
    assertCrc(0x22620404, "The quick brown fox jumps over the lazy dog".getBytes(UTF_8));
    assertCrc(0xE3069283, "123456789".getBytes(UTF_8));
    assertCrc(0xf3dbd4fe, "1234567890".getBytes(UTF_8));
    assertCrc(0xBFE92A83, "23456789".getBytes(UTF_8));
  }

  public void testAgainstSimplerImplementation() {
    Random r = new Random(1234567);

  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() {

  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() {
    return byteSink.wasStreamOpened();
  }

  @Override
  public boolean wasStreamClosed() {
    return byteSink.wasStreamClosed();
  }

  void writeChars(String s);

  @Override
  void writeUTF(String s);

  /**
   * @deprecated This method is dangerous as it discards the high byte of every character. For
   *     UTF-8, use {@code write(s.getBytes(StandardCharsets.UTF_8))}.
   */
  @Deprecated
  @Override
  void writeBytes(String s);

  /** Returns the contents that have been written to this instance, as a byte array. */
  byte[] toByteArray();

    }

    @AfterEach
    void tearDown() throws Exception {
        builder = null;
    }

    private InputStream toStream(String xml) {
        return new ByteArrayInputStream(xml.getBytes(StandardCharsets.UTF_8));
    }

    @Test
    void testEmptyDescriptor() throws Exception {
        String xml = "<extension></extension>";

        ExtensionDescriptor ed = builder.build(toStream(xml));

    for (int i = 0; i < reps; i++) {
      res +=
          System.identityHashCode(
              hashFunctionEnum
                  .getHashFunction()
                  .hashBytes(strings[i & SAMPLE_MASK].getBytes(UTF_8)));
    }
    return res;
  }

  @Benchmark
  int hashUtf8GetBytesHasher(int reps) {
    int res = 0;
    for (int i = 0; i < reps; i++) {
      res +=
          System.identityHashCode(