assertNotNull(new SystemHelper().getEnvMap());
    }

    public void test_encodeUrlFilter() {
        String path = null;
        assertNull(systemHelper.encodeUrlFilter(path));

        path = "abc";
        assertEquals(path, systemHelper.encodeUrlFilter(path));

        path = "あいう";
        assertEquals("%E3%81%82%E3%81%84%E3%81%86", systemHelper.encodeUrlFilter(path));

        path = "[]^$.*+?,{}|%\\";

    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: =");

      .isEqualTo("http://host/#=[]:;%22~%7C?%23@%5E/$%25*")
  }

  @Test
  fun toUriSpecialQueryCharacters() {
    val httpUrl = "http://host/?d=abc!@[]^`{}|\\".toHttpUrl()
    val uri = httpUrl.toUri()
    assertThat(uri.toString()).isEqualTo("http://host/?d=abc!@[]%5E%60%7B%7D%7C%5C")
  }

  @Test
  fun toUriWithUsernameNoPassword() {
    val httpUrl =
      HttpUrl
        .Builder()

      override fun contentType(): MediaType? = "text/plain".toMediaTypeOrNull()

      @Throws(IOException::class)
      override fun writeTo(sink: BufferedSink) {
        try {
          sink.writeUtf8("abc")
          sink.flush()
          Thread.sleep(sleepMillis.toLong())
          sink.writeUtf8("def")
        } catch (e: InterruptedException) {
          throw InterruptedIOException()
        }
      }

    // TODO test jdk.tls.client.enableSessionTicketExtension
    // TODO check debugging information

    enableTls()

    server.enqueue(MockResponse(body = "abc"))

    val request = Request(server.url("/"))

    val response = client.newCall(request).execute()

    response.use {
      assertEquals(200, response.code)
      if (PlatformVersion.majorVersion > 11) {

    }
  }

  @Test
  fun writeBounds() {
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )
    val buffer = Buffer().writeUtf8("abc")
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, -1L)
    }
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, 4L)
    }
  }

    String msg = "Alphanumeric characters are always 'safe' and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false

        results = relatedContentHelper.getRelatedContents("123");
        assertEquals(1, results.length);
        assertEquals("Number: 123", results[0]);

        results = relatedContentHelper.getRelatedContents("abc");
        assertEquals(0, results.length);
    }

    public void test_load_invalidRegex() {
        List<RelatedContent> testData = new ArrayList<>();

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          "123.cn",
          "8server.shop",
          "a" + DELTA + "b.com",
          "abc.a23",
          "biz.com.ua",
          "f--1.com",
          "f--o",
          "f-_-o.cOM",
          "f11-1.com",
          "fOo",
          "f_a",
          "foo.com",
          "foo.net.us\uFF61ocm",

          } else if (socketMode == Channel) {
            socketFactory(ChannelSocketFactory())
          }
        }.build()

    server.enqueue(MockResponse(body = "abc"))

    @Suppress("HttpUrlsUsage")
    val url =
      if (socketMode is TlsInstance) {
        "https://$hostname:${server.port}/get"
      } else {
        "http://$hostname:${server.port}/get"
      }