assertFailsToDecode(base32(), "let's not talk of love or chains!");
    // An 8n+{1,3,6} length string is never legal base32.
    assertFailsToDecode(base32(), "A", "Invalid input length 1");
    assertFailsToDecode(base32(), "ABC");
    assertFailsToDecode(base32(), "ABCDEF");
    // These have a combination of invalid length, unrecognized characters and wrong padding.
    assertFailsToDecode(base32(), "AB=C", "Unrecognized character: =");

  public void testReadEmptyString() throws IOException {
    assertReadsCorrectly("");
  }

  public void testReadsStringsCorrectly() throws IOException {
    assertReadsCorrectly("abc");
    assertReadsCorrectly("abcde");
    assertReadsCorrectly("abcdefghijkl");
    assertReadsCorrectly(
        ""
            + "abcdefghijklmnopqrstuvwxyz\n"
            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r"

   */
  public void testBadArguments_badchars() {
    String msg =
        "Alphanumeric characters are always 'safe' " + "and should not be explicitly specified";
    try {
      new PercentEscaper("-+#abc.!", false);
      fail(msg);
    } catch (IllegalArgumentException expected) {
      assertThat(expected).hasMessageThat().isEqualTo(msg);
    }
  }

  public void testBadArguments_plusforspace() {

            .createTestSuite());

    return suite;
  }

  public void testCharactersOfIsView() {
    StringBuilder builder = new StringBuilder("abc");
    List<Character> chars = Lists.charactersOf(builder);
    assertEquals(asList('a', 'b', 'c'), chars);
    builder.append("def");
    assertEquals(asList('a', 'b', 'c', 'd', 'e', 'f'), chars);

  }

  public void testEmptiesFirst() {
    Optional<String> empty = Optional.empty();
    Optional<String> abc = Optional.of("abc");
    Optional<String> z = Optional.of("z");

    Comparator<Optional<String>> comparator = Comparators.emptiesFirst(comparing(String::length));
    Helpers.testComparator(comparator, empty, z, abc);

    // Just demonstrate that no explicit type parameter is required

    }
    assertEquals(expected, builder.toString());
  }

  static final CharSource BROKEN_READ_SOURCE = new TestCharSource("ABC", READ_THROWS);
  static final CharSource BROKEN_CLOSE_SOURCE = new TestCharSource("ABC", CLOSE_THROWS);
  static final CharSource BROKEN_OPEN_SOURCE = new TestCharSource("ABC", OPEN_THROWS);
  static final CharSink BROKEN_WRITE_SINK = new TestCharSink(WRITE_THROWS);

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          "foo.com",
          "f-_-o.cOM",
          "f--1.com",
          "f11-1.com",
          "www",
          "abc.a23",
          "biz.com.ua",
          "x",
          "fOo",
          "f--o",
          "f_a",
          "foo.net.us\uFF61ocm",
          "woo.com.",
          "8server.shop",
          "123.cn",

   */
  public void testBadArguments_badchars() {
    String msg =
        "Alphanumeric characters are always 'safe' " + "and should not be explicitly specified";
    try {
      new PercentEscaper("-+#abc.!", false);
      fail(msg);
    } catch (IllegalArgumentException expected) {
      assertThat(expected).hasMessageThat().isEqualTo(msg);
    }
  }

  public void testBadArguments_plusforspace() {

                unfiltered.add("yyy");
                unfiltered.addAll(ImmutableList.copyOf(elements));
                unfiltered.add("zzz");
                unfiltered.add("abc");
                return Collections2.filter(Collections2.filter(unfiltered, LENGTH_1), NOT_YYY_ZZZ);
              }
            })
        .named("Collections2.filter, filtered input")
        .withFeatures(

                unfiltered.add("yyy");
                unfiltered.addAll(ImmutableList.copyOf(elements));
                unfiltered.add("zzz");
                unfiltered.add("abc");
                return Collections2.filter(Collections2.filter(unfiltered, LENGTH_1), NOT_YYY_ZZZ);
              }
            })
        .named("Collections2.filter, filtered input")
        .withFeatures(