val issuer = cert.issuerX500Principal
    val subjectCaCerts = subjectToCaCerts[issuer] ?: return null

    return subjectCaCerts.firstOrNull {
      try {
        cert.verify(it.publicKey)
        return@firstOrNull true
      } catch (_: Exception) {
        return@firstOrNull false
      }
    }
  }

  override fun equals(other: Any?): Boolean =

  @Test
  fun buildsWhenJdk9() {
    platform.assumeJdk9()
    assertThat(buildIfSupported()).isNotNull()
  }

  @Test
  fun buildsWhenJdk8() {
    platform.assumeJdk8()
    try {
      SSLSocket::class.java.getMethod("getApplicationProtocol")
      // also present on JDK8 after build 252.
      assertThat(buildIfSupported()).isNotNull()
    } catch (nsme: NoSuchMethodException) {

  @Test
  open fun testPublicSuffixDb() {
    val httpUrl = "https://www.google.co.uk".toHttpUrl()
    assertThat(httpUrl.topPrivateDomain()).isEqualTo("google.co.uk")
  }

  private fun assumeNetwork() {
    try {
      InetAddress.getByName("www.google.com")
    } catch (uhe: UnknownHostException) {
      throw AssumptionViolatedException(uhe.message, uhe)
    }
  }

  fun dnsFail() {
    client =
      OkHttpClient
        .Builder()
        .dns { _ -> throw UnknownHostException("reason") }
        .eventListenerFactory(loggingEventListenerFactory)
        .build()
    try {
      client.newCall(request().build()).execute()
      fail<Any>()
    } catch (expected: UnknownHostException) {
    }
    logRecorder
      .assertLogMatch(Regex("""callStart: Request\{method=GET, url=$url\}"""))

    }
  }

  public void testValueOfLong() {
    long min = 0;
    long max = (1L << 32) - 1;
    for (long value : TEST_LONGS) {
      boolean expectSuccess = value >= min && value <= max;
      try {
        assertThat(UnsignedInteger.valueOf(value).longValue()).isEqualTo(value);
        assertThat(expectSuccess).isTrue();
      } catch (IllegalArgumentException e) {
        assertThat(expectSuccess).isFalse();
      }

     * @throws CrawlerSystemException if the patterns cannot be loaded.
     */
    @Override
    public List<Pattern> getIncludeUrlPatternList(final String sessionId) {
        try {
            return includeFilterCache.get(sessionId);
        } catch (final ExecutionException e) {
            throw new CrawlerSystemException(e);
        }
    }

    /**

                buildQuery("sort:timestamp.desc sort:last_modified.desc"));

        try {
            buildQuery("sort:timestamp.xxx");
            fail();
        } catch (InvalidQueryException e) {
            // ok
        }

        try {
            buildQuery("sort:aaa");
            fail();
        } catch (InvalidQueryException e) {
            // ok

        return buffer;
    }

    private NegotiateContextRequest createMockPreauthContext() {
        PreauthIntegrityNegotiateContext ctx = new PreauthIntegrityNegotiateContext();
        try {
            setPrivateField(ctx, "hashAlgos", new int[] { PreauthIntegrityNegotiateContext.HASH_ALGO_SHA512 });
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
        return ctx;

        ) {
          latch.countDown()
        }

        @Throws(IOException::class)
        override fun onResponse(
          call: Call,
          response: Response,
        ) {
          try {
            Thread.sleep(500)
          } catch (e: InterruptedException) {
            throw AssertionError()
          }
          assertFailsWith<IOException> {
            response.body.source().readUtf8()

  }

  static class ThrowsAtEndException extends RuntimeException {
    /* nothing */
  }

  /**
   * This Iterator claims to have more elements than the underlying iterable, but when you try to
   * fetch the extra elements, it throws an unchecked exception.
   */
  static class ThrowsAtEndIterator<E> implements Iterator<E> {
    Iterator<E> iterator;