checkNotNull(factory);
    return new ByteSourceFactory() {
      @Override
      public ByteSource createSource(byte[] data) throws IOException {
        return factory.createSource(new String(data, Charsets.UTF_8)).asByteSource(Charsets.UTF_8);
      }

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

  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    for (boolean asByteSource : new boolean[] {false, true}) {
      suite.addTest(
          CharSourceTester.tests(
              "CharSource.wrap[CharSequence]",
              SourceSinkFactories.stringCharSourceFactory(),
              asByteSource));
      suite.addTest(
          CharSourceTester.tests(

   * returned, rather than round-trip encoding. Subclasses that override this method should behave
   * the same way.
   *
   * @since 20.0
   */
  public ByteSource asByteSource(Charset charset) {
    return new AsByteSource(charset);
  }

  /**
   * Opens a new {@link Reader} for reading from this source. This method returns a new, independent
   * reader each time it is called.
   *

 *
 * <p>A single {@code SourceSinkFactory} implementation generally corresponds to one specific way of
 * creating a source or sink, such as {@link Files#asByteSource(File)}. Implementations of {@code
 * SourceSinkFactory} for common.io are found in {@link SourceSinkFactories}.
 *
 * @param <S> the source or sink type
 * @param <T> the data type (byte[] or String)

    AsCharSource(Charset charset) {
      this.charset = checkNotNull(charset);
    }

    @Override
    public ByteSource asByteSource(Charset charset) {
      if (charset.equals(this.charset)) {
        return ByteSource.this;
      }
      return super.asByteSource(charset);
    }

    @Override
    public Reader openStream() throws IOException {

 *
 * <p>A single {@code SourceSinkFactory} implementation generally corresponds to one specific way of
 * creating a source or sink, such as {@link Files#asByteSource(File)}. Implementations of {@code
 * SourceSinkFactory} for common.io are found in {@link SourceSinkFactories}.
 *
 * @param <S> the source or sink type
 * @param <T> the data type (byte[] or String)

    ByteSourceFactory byteSourceFactory = SourceSinkFactories.asByteSourceFactory(factory);
    suite.addTest(
        ByteSourceTester.suiteForBytes(
            byteSourceFactory, bytes, name + ".asByteSource[Charset]", desc, slice));
    return suite;
  }

  static TestSuite suiteForString(
      CharSourceFactory factory, String string, String name, String desc) {

  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        ByteSourceTester.tests(
            "Resources.asByteSource[URL]", SourceSinkFactories.urlByteSourceFactory(), true));
    suite.addTest(
        CharSourceTester.tests(
            "Resources.asCharSource[URL, Charset]",
            SourceSinkFactories.urlCharSourceFactory(),

    ByteSourceFactory byteSourceFactory = SourceSinkFactories.asByteSourceFactory(factory);
    suite.addTest(
        ByteSourceTester.suiteForBytes(
            byteSourceFactory, bytes, name + ".asByteSource[Charset]", desc, slice));
    return suite;
  }

  static TestSuite suiteForString(
      CharSourceFactory factory, String string, String name, String desc) {

  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        ByteSourceTester.tests(
            "Resources.asByteSource[URL]", SourceSinkFactories.urlByteSourceFactory(), true));
    suite.addTest(
        CharSourceTester.tests(
            "Resources.asCharSource[URL, Charset]",
            SourceSinkFactories.urlCharSourceFactory(),