@Override
    public List<Character> create(Character[] elements) {
      char[] chars = Chars.toArray(Arrays.asList(elements));
      return Lists.charactersOf(String.copyValueOf(chars));
    }
  }

  public static class CharactersOfCharSequenceGenerator extends TestCharacterListGenerator {
    @Override
    public List<Character> create(Character[] elements) {

    SpliteratorTester.of(
            () ->
                CollectSpliterators.flatMap(
                    Arrays.spliterator(new String[] {"abc", "", "de", "f", "g", ""}),
                    (String str) -> Lists.charactersOf(str).spliterator(),
                    Spliterator.SIZED | Spliterator.DISTINCT | Spliterator.NONNULL,
                    7))
        .expect('a', 'b', 'c', 'd', 'e', 'f', 'g');
  }

    @Override
    public List<Character> create(Character[] elements) {
      char[] chars = Chars.toArray(Arrays.asList(elements));
      return Lists.charactersOf(String.copyValueOf(chars));
    }
  }

  public static class CharactersOfCharSequenceGenerator extends TestCharacterListGenerator {
    @Override
    public List<Character> create(Character[] elements) {

  static final String URL_FORM_PARAMETER_OTHER_SAFE_CHARS = "-_.*";

  static final String URL_PATH_OTHER_SAFE_CHARS_LACKING_PLUS =
      "-._~" // Unreserved characters.
          + "!$'()*,;&=" // The subdelim characters (excluding '+').
          + "@:"; // The gendelim characters permitted in paths.

  /**
   * Returns an {@link Escaper} instance that escapes strings so they can be safely included in <a

   *
   * @param replacementMap a map of characters to their escaped representations
   * @param safeMin the lowest character value in the safe range
   * @param safeMax the highest character value in the safe range
   * @param unsafeReplacement the default replacement for unsafe characters or null if no default
   *     replacement is required
   */
  protected ArrayBasedUnicodeEscaper(

  public void testReallySimpleFingerprints() {
    assertEquals(8581389452482819506L, fingerprint("test".getBytes(UTF_8)));
    // 32 characters long
    assertEquals(-4196240717365766262L, fingerprint(Strings.repeat("test", 8).getBytes(UTF_8)));
    // 256 characters long
    assertEquals(3500507768004279527L, fingerprint(Strings.repeat("test", 64).getBytes(UTF_8)));
  }

  public void testStringsConsistency() {

    assertEquals("a&quot;b&lt;c&gt;d&amp;", htmlEscaper().escape("a\"b<c>d&"));

    // Test two escapes in a row.
    assertEquals("foo&amp;&amp;bar", htmlEscaper().escape("foo&&bar"));

    // Test many non-escaped characters.
    s =
        "!@#$%^*()_+=-/?\\|]}[{,.;:"
            + "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
            + "1234567890";
    assertSame(s, htmlEscaper().escape(s));
  }

import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.CharMatcher.NamedFastMatcher;
import java.util.BitSet;

/**
 * An immutable version of CharMatcher for smallish sets of characters that uses a hash table with
 * linear probing to check for matches.
 *
 * @author Christopher Swenson
 */
@GwtIncompatible // no precomputation is done in GWT
@ElementTypesAreNonnullByDefault

/**
 * A {@code UnicodeEscaper} that escapes some set of Java characters using a UTF-8 based percent
 * encoding scheme. The set of safe characters (those which remain unescaped) can be specified on
 * construction.
 *
 * <p>This class is primarily used for creating URI escapers in {@link UrlEscapers} but can be used
 * directly if required. While URI escapers impose specific semantics on which characters are

 * @author Louis Wasserman
 */
class BenchmarkHelpers {
  private static final String WHITESPACE_CHARACTERS =
      "\u00a0\u180e\u202f\t\n\013\f\r \u0085"
          + "\u1680\u2028\u2029\u205f\u3000\u2000\u2001\u2002\u2003\u2004\u2005"
          + "\u2006\u2007\u2008\u2009\u200a";
  private static final String ASCII_CHARACTERS;

  static {
    int spaceInAscii = 32;
    int sevenBitAsciiMax = 128;