assertEqualCharNodes(traverser.breadthFirst('b'), "bcda");
    assertEqualCharNodes(traverser.breadthFirst('c'), "cdab");
    assertEqualCharNodes(traverser.breadthFirst('d'), "dabc");
  }

  @Test
  public void forGraph_breadthFirstIterable_cycle() {
    Traverser<Character> traverser = Traverser.forGraph(CYCLE_GRAPH);
    assertEqualCharNodes(traverser.breadthFirst(charactersOf("a")), "abcd");

    assertEqualCharNodes(traverser.breadthFirst('b'), "bcda");
    assertEqualCharNodes(traverser.breadthFirst('c'), "cdab");
    assertEqualCharNodes(traverser.breadthFirst('d'), "dabc");
  }

  @Test
  public void forGraph_breadthFirstIterable_cycle() {
    Traverser<Character> traverser = Traverser.forGraph(CYCLE_GRAPH);
    assertEqualCharNodes(traverser.breadthFirst(charactersOf("a")), "abcd");

        assertEquals("123 abc", documentHelper.getContent(null, responseData, " 123 abc ", dataMap));
        assertEquals("１２３ あいう", documentHelper.getContent(null, responseData, "　１２３　あいう　", dataMap));
        assertEquals("123 abc", documentHelper.getContent(null, responseData, " 123\nabc ", dataMap));
    }

    public void test_getContent_maxAlphanum() {

    // Identical valid surrogate pairs.
    assertEquals(
        "abc\uD8AB\uDCAB", Strings.commonPrefix("abc\uD8AB\uDCABdef", "abc\uD8AB\uDCABxyz"));
    // Differing valid surrogate pairs.
    assertEquals("abc", Strings.commonPrefix("abc\uD8AB\uDCABdef", "abc\uD8AB\uDCACxyz"));
    // One invalid pair.

    val response = client.newCall(request).execute()
    assertThat(response.body.string()).isEqualTo("abc")
    assertThat(socksProxy.connectionCount()).isEqualTo(1)
  }

  @Test
  fun checkRemoteDNSResolve() {
    // This testcase will fail if the target is resolved locally instead of through the proxy.
    server.enqueue(MockResponse.Builder().body("abc").build())
    val client =
      clientTestRule
        .newClientBuilder()

            assertNull(getIdMethod.invoke(crawlingConfigHelper, "W"));
            assertEquals("123", getIdMethod.invoke(crawlingConfigHelper, "W123"));
            assertEquals("abc", getIdMethod.invoke(crawlingConfigHelper, "Fabc"));
            assertEquals("xyz", getIdMethod.invoke(crawlingConfigHelper, "Dxyz"));
        } catch (Exception e) {
            fail("Failed to test getId method: " + e.getMessage());
        }

      MockResponse
        .Builder()
        .body("abc")
        .build(),
    )
    val call =
      client.newCall(
        Request
          .Builder()
          .url(server.url("/"))
          .build(),
      )
    val response = call.execute()
    assertThat(response.code).isEqualTo(200)
    assertThat(response.body.string()).isEqualTo("abc")
    response.body.close()

          ),
        body = "ABC.1",
      ),
    )
    server.enqueue(
      MockResponse(
        headers =
          headersOf(
            "Last-Modified",
            formatDate(-1, TimeUnit.HOURS)!!,
            "Expires",
            formatDate(1, TimeUnit.HOURS)!!,
          ),
        body = "ABC.2",
      ),
    )
    client =
      client

      MockResponse
        .Builder()
        .body("abc")
        .doNotReadRequestBody()
        .build(),
    )

    val call =
      client.newCall(
        Request(
          url = server.url("/"),
          body = SlowRequestBody,
        ),
      )

    call.execute().use { response ->
      assertThat(response.body.string()).isEqualTo("abc")
    }

    val expectedEvents = mutableListOf<String>()

      String.valueOf(Character.MIN_LOW_SURROGATE),
      Character.MIN_LOW_SURROGATE + "xyz",
      "abc" + Character.MIN_LOW_SURROGATE,
      "abc" + Character.MIN_LOW_SURROGATE + "xyz",
      String.valueOf(Character.MAX_LOW_SURROGATE),
      Character.MAX_LOW_SURROGATE + "xyz",
      "abc" + Character.MAX_LOW_SURROGATE,
      "abc" + Character.MAX_LOW_SURROGATE + "xyz",
    };
    for (String s : BAD_STRINGS) {