@NullUnmarked
public class CharSourceTester extends SourceSinkTester<CharSource, String, CharSourceFactory> {

  private static final ImmutableList<Method> testMethods = getTestMethods(CharSourceTester.class);

  static TestSuite tests(String name, CharSourceFactory factory, boolean testAsByteSource) {
    TestSuite suite = new TestSuite(name);

    TestSuite suite = suiteForBytes(factory, string.getBytes(UTF_8), name, desc, true);
    CharSourceFactory charSourceFactory = SourceSinkFactories.asCharSourceFactory(factory);
    suite.addTest(
        CharSourceTester.suiteForString(
            charSourceFactory, string, name + ".asCharSource[Charset]", desc));
    return suite;
  }

  static TestSuite suiteForBytes(

    TestSuite suite = suiteForBytes(factory, string.getBytes(UTF_8), name, desc, true);
    CharSourceFactory charSourceFactory = SourceSinkFactories.asCharSourceFactory(factory);
    suite.addTest(
        CharSourceTester.suiteForString(
            charSourceFactory, string, name + ".asCharSource[Charset]", desc));
    return suite;
  }

  static TestSuite suiteForBytes(

  /** Factory for {@link ByteSink} instances. */
  interface ByteSinkFactory extends SinkFactory<ByteSink, byte[]> {}

  /** Factory for {@link CharSource} instances. */
  interface CharSourceFactory extends SourceFactory<CharSource, String> {}

  /** Factory for {@link CharSink} instances. */
  interface CharSinkFactory extends SinkFactory<CharSink, String> {}

  /** Factory for {@link ByteSink} instances. */
  interface ByteSinkFactory extends SinkFactory<ByteSink, byte[]> {}

  /** Factory for {@link CharSource} instances. */
  interface CharSourceFactory extends SourceFactory<CharSource, String> {}

  /** Factory for {@link CharSink} instances. */
  interface CharSinkFactory extends SinkFactory<CharSink, String> {}