assertEquals(80, HostAndPort.fromString("host:80").getPortOrDefault(123));
    assertEquals(123, HostAndPort.fromString("host").getPortOrDefault(123));
  }

  public void testHashCodeAndEquals() {
    HostAndPort hpNoPort1 = HostAndPort.fromString("foo::123");
    HostAndPort hpNoPort2 = HostAndPort.fromString("foo::123");
    HostAndPort hpNoPort3 = HostAndPort.fromString("[foo::123]");

    assertEquals(80, HostAndPort.fromString("host:80").getPortOrDefault(123));
    assertEquals(123, HostAndPort.fromString("host").getPortOrDefault(123));
  }

  public void testHashCodeAndEquals() {
    HostAndPort hpNoPort1 = HostAndPort.fromString("foo::123");
    HostAndPort hpNoPort2 = HostAndPort.fromString("foo::123");
    HostAndPort hpNoPort3 = HostAndPort.fromString("[foo::123]");

    assertThrows(IllegalArgumentException.class, () -> HashCode.fromString("7"));
    HashCode unused = HashCode.fromString("7f");
  }

  public void testFromStringFailsWithOddLengthInput() {
    assertThrows(IllegalArgumentException.class, () -> HashCode.fromString("7f8"));
  }

  public void testIntWriteBytesTo() {
    byte[] dest = new byte[4];

    assertThrows(IllegalArgumentException.class, () -> HashCode.fromString("7"));
    HashCode unused = HashCode.fromString("7f");
  }

  public void testFromStringFailsWithOddLengthInput() {
    assertThrows(IllegalArgumentException.class, () -> HashCode.fromString("7f8"));
  }

  public void testIntWriteBytesTo() {
    byte[] dest = new byte[4];

final class ParseRequest {
  final String rawValue;
  final int radix;

  private ParseRequest(String rawValue, int radix) {
    this.rawValue = rawValue;
    this.radix = radix;
  }

  static ParseRequest fromString(String stringValue) {
    if (stringValue.length() == 0) {
      throw new NumberFormatException("empty string");
    }

    // Handle radix specifier if present
    String rawValue;
    int radix;

      if (views.contains("posix")) {
        filePermissions = () -> asFileAttribute(PosixFilePermissions.fromString("rw-------"));
        directoryPermissions = () -> asFileAttribute(PosixFilePermissions.fromString("rwx------"));
      } else if (views.contains("acl")) {
        filePermissions = directoryPermissions = userPermissions();
      } else {
        filePermissions =

    assertSame(value, cache.getUnchecked(key));
    assertEquals(0, cache.size());
    assertFalse(cache.asMap().containsKey(key));
  }

  public void testCacheBuilderFrom_string() {
    CacheBuilder<?, ?> fromString =
        CacheBuilder.from(
            "initialCapacity=10,maximumSize=20,concurrencyLevel=30,"
                + "weakKeys,weakValues,expireAfterAccess=10m");
    CacheBuilder<?, ?> expected =

   * lenient {@code base 16} decoding, please use {@link com.google.common.io.BaseEncoding#decode}
   * (and pass the result to {@link #fromBytes}).
   *
   * @since 15.0
   */
  public static HashCode fromString(String string) {
    checkArgument(
        string.length() >= 2, "input string (%s) must have at least 2 characters", string);
    checkArgument(
        string.length() % 2 == 0,

    assertSame(value, cache.getUnchecked(key));
    assertEquals(0, cache.size());
    assertFalse(cache.asMap().containsKey(key));
  }

  public void testCacheBuilderFrom_string() {
    CacheBuilder<?, ?> fromString =
        CacheBuilder.from(
            "initialCapacity=10,maximumSize=20,concurrencyLevel=30,"
                + "weakKeys,weakValues,expireAfterAccess=10m");
    CacheBuilder<?, ?> expected =

   */
  public static HostSpecifier fromValid(String specifier) {
    // Verify that no port was specified, and strip optional brackets from
    // IPv6 literals.
    HostAndPort parsedHost = HostAndPort.fromString(specifier);
    Preconditions.checkArgument(!parsedHost.hasPort());
    String host = parsedHost.getHost();

    // Try to interpret the specifier as an IP address. Note we build