.host("host")
        .username("=[]:;\"~|?#@^/$%*")
        .build()
    assertThat(url.toString())
      .isEqualTo("http://%3D%5B%5D%3A%3B%22~%7C%3F%23%40%5E%2F$%25*@host/")
    assertThat(url.toUri().toString())
      .isEqualTo("http://%3D%5B%5D%3A%3B%22~%7C%3F%23%40%5E%2F$%25*@host/")
  }

  @Test
  fun toUriPasswordSpecialCharacters() {
    val url =
      HttpUrl.Builder()
        .scheme("http")

    long nowNanos = System.nanoTime();
    if (name.equals("callStart")) {
      callStartNanos = nowNanos;
    }
    long elapsedNanos = nowNanos - callStartNanos;
    System.out.printf("%.3f %s%n", elapsedNanos / 1000000000d, name);
  }

  @Override public void callStart(Call call) {
    printEvent("callStart");
  }

  @Override public void callEnd(Call call) {
    printEvent("callEnd");
  }

        .query("i:\u0001@/\\?#%j")
        .fragment("k:\u0001@/\\?#%l")
        .build()
    assertThat(url.toString())
      .isEqualTo(
        "http://a%3A%01%40%2F%5C%3F%23%25b:c%3A%01%40%2F%5C%3F%23%25d@ef:8080/" +
          "g:%01@%2F%5C%3F%23%25h?i:%01@/\\?%23%25j#k:%01@/\\?#%25l",
      )
    assertThat(url.scheme).isEqualTo("http")
    assertThat(url.username).isEqualTo("a:\u0001@/\\?#%b")

      long nowNanos = System.nanoTime();
      if (name.equals("callStart")) {
        callStartNanos = nowNanos;
      }
      long elapsedNanos = nowNanos - callStartNanos;
      System.out.printf("%.3f %s%n", elapsedNanos / 1000000000d, name);
    }

    @Override public void callStart(Call call) {
      printEvent("callStart");
    }

    @Override public void proxySelectStart(Call call, HttpUrl url) {

      this.callId = callId;
      this.callStartNanos = callStartNanos;
    }

    private void printEvent(String name) {
      long elapsedNanos = System.nanoTime() - callStartNanos;
      System.out.printf("%04d %.3f %s%n", callId, elapsedNanos / 1000000000d, name);
    }

    @Override public void proxySelectStart(Call call, HttpUrl url) {
      printEvent("proxySelectStart");
    }

    assertThat(formEncode(60)).isEqualTo("%3C")
    assertThat(formEncode(61)).isEqualTo("%3D")
    assertThat(formEncode(62)).isEqualTo("%3E")
    assertThat(formEncode(63)).isEqualTo("%3F")
    assertThat(formEncode(64)).isEqualTo("%40")
    assertThat(formEncode(65)).isEqualTo("A")
    assertThat(formEncode(90)).isEqualTo("Z")
    assertThat(formEncode(91)).isEqualTo("%5B")

 *     .query("_Who?_")
 *     .fragment("_Who?_")
 *     .build();
 * System.out.println(url);
 * ```
 *
 * This prints:
 *
 * ```
 * http://who-let-the-dogs.out/_Who%3F_?_Who?_#_Who?_
 * ```
 *
 * When parsing URLs that lack percent encoding where it is required, this class will percent encode
 * the offending characters.
 *
 * ### IDNA Mapping and Punycode encoding
 *