}

  private static final Predicate<CharSequence> STARTSWITH_A =
      new Predicate<CharSequence>() {
        @Override
        public boolean apply(CharSequence input) {
          return (input.length() > 0) && (input.charAt(0) == 'a');
        }
      };

  public void testIndexOf_genericPredicate() {
    List<CharSequence> sequences = Lists.newArrayList();
    sequences.add("bob");

    assertEquals(0, ArbitraryInstances.get(BigInteger.class).intValue());
    assertEquals("", ArbitraryInstances.get(String.class));
    assertEquals("", ArbitraryInstances.get(CharSequence.class));
    assertEquals(TimeUnit.SECONDS, ArbitraryInstances.get(TimeUnit.class));
    assertNotNull(ArbitraryInstances.get(Object.class));
    assertEquals(0, ArbitraryInstances.get(Number.class));

    Object writeReplace() {
      return super.writeReplace();
    }
  }

  private static final class CharSequenceAsList extends AbstractList<Character> {
    private final CharSequence sequence;

    CharSequenceAsList(CharSequence sequence) {
      this.sequence = sequence;
    }

    @Override
    public Character get(int index) {
      checkElementIndex(index, size()); // for GWT

  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(

  }

  private static final Predicate<CharSequence> STARTSWITH_A =
      new Predicate<CharSequence>() {
        @Override
        public boolean apply(CharSequence input) {
          return (input.length() > 0) && (input.charAt(0) == 'a');
        }
      };

  public void testIndexOf_genericPredicate() {
    List<CharSequence> sequences = Lists.newArrayList();
    sequences.add("bob");

    return BigInteger.valueOf(generateInt());
  }

  @Generates
  BigDecimal generateBigDecimal() {
    return BigDecimal.valueOf(generateInt());
  }

  @Generates
  CharSequence generateCharSequence() {
    return generateString();
  }

  @Generates
  String generateString() {
    return Integer.toString(generateInt());
  }

  @Generates

              @Override
              public Sub apply(Sub sub) {
                return new ForwardingSub(sub);
              }
            });
  }

  interface Base {
    CharSequence getId();
  }

  interface Sub extends Base {
    @Override
    String getId();
  }

  private static class ForwardingSub implements Sub {
    private final Sub delegate;

    reallyTestAllMatches(forPredicate(matcher), s);

    reallyTestAllMatches(matcher, new StringBuilder(s));
  }

  private void reallyTestNoMatches(CharMatcher matcher, CharSequence s) {
    assertFalse(matcher.matches(s.charAt(0)));
    assertEquals(-1, matcher.indexIn(s));
    assertEquals(-1, matcher.indexIn(s, 0));
    assertEquals(-1, matcher.indexIn(s, 1));

    reallyTestAllMatches(forPredicate(matcher), s);

    reallyTestAllMatches(matcher, new StringBuilder(s));
  }

  private void reallyTestNoMatches(CharMatcher matcher, CharSequence s) {
    assertFalse(matcher.matches(s.charAt(0)));
    assertEquals(-1, matcher.indexIn(s));
    assertEquals(-1, matcher.indexIn(s, 0));
    assertEquals(-1, matcher.indexIn(s, 1));

    k1 = mixK1(high);
    h1 = mixH1(h1, k1);

    return fmix(h1, Longs.BYTES);
  }

  @Override
  public HashCode hashUnencodedChars(CharSequence input) {
    int h1 = seed;

    // step through the CharSequence 2 chars at a time
    for (int i = 1; i < input.length(); i += 2) {
      int k1 = input.charAt(i - 1) | (input.charAt(i) << 16);
      k1 = mixK1(k1);
      h1 = mixH1(h1, k1);