var delta = 0
    var bias = INITIAL_BIAS
    var h = b
    while (h < input.size) {
      val m = input.minBy { if (it >= n) it else Int.MAX_VALUE }

      val increment = (m - n) * (h + 1)
      if (delta > Int.MAX_VALUE - increment) return false // Prevent overflow.
      delta += increment

      n = m

      for (c in input) {
        if (c < n) {

from your test's `tearDown()`.

### API

#### MockResponse

Mock responses default to an empty response body and a `200` status code.
You can set a custom body with a string, input stream or byte array. Also
add headers with a fluent builder API.

```java
MockResponse response = new MockResponse()
    .addHeader("Content-Type", "application/json; charset=utf-8")

) {
  /**
   * Returns [input] in canonical form according to these rules, or null if no such canonical form
   * exists for it.
   */
  operator fun invoke(input: String): String? = invoke(Buffer().writeUtf8(input))

  internal operator fun invoke(input: BufferedSource): String? {
    // 1. Map.
    val mapResult = Buffer()
    while (!input.exhausted()) {
      val codePoint = input.readUtf8CodePoint()

 *
 * Each test is a line of the file `toascii.json`.
 */
@Serializable
class WebPlatformToAsciiData {
  var input: String? = null
  var output: String? = null
  var comment: String? = null

  override fun toString() = "input=$input output=$output"

  companion object {
    fun load(): List<WebPlatformToAsciiData> {

      }
    }
  }

  private fun testHttpUrl(testData: WebPlatformUrlTestData) {
    val url =
      when (testData.base) {
        "about:blank" -> testData.input!!.toHttpUrlOrNull()
        else -> testData.base!!.toHttpUrl().resolve(testData.input!!)
      }

    if (testData.expectParseFailure()) {
      assertThat(url, "Expected URL to fail parsing").isNull()
      return
    }

  UPGRADE_TO_SSL_AT_END,
  DISCONNECT_AT_START,
  DISCONNECT_AFTER_REQUEST,
  DISCONNECT_DURING_REQUEST_BODY,
  DISCONNECT_DURING_RESPONSE_BODY,
  DO_NOT_READ_REQUEST_BODY,
  FAIL_HANDSHAKE,
  SHUTDOWN_INPUT_AT_END,
  SHUTDOWN_OUTPUT_AT_END,
  STALL_SOCKET_AT_START,
  NO_RESPONSE,
  RESET_STREAM_AT_START,
  EXPECT_CONTINUE,
  CONTINUE_ALWAYS,

      inet4AddressToAscii(
        byteArrayOf(255.toByte(), 255.toByte(), 255.toByte(), 255.toByte()),
      ),
    ).isEqualTo("255.255.255.255")
  }

  private fun decodeIpv6(input: String): ByteArray? = decodeIpv6(input, 0, input.length)

  @Test
  fun testToCanonicalHost() {
    // IPv4
    assertThat("127.0.0.1".toCanonicalHost()).isEqualTo("127.0.0.1")

 * Each line of the `urltestdata.txt` file specifies a test. Lines look like this:
 *
 * ```
 * http://example\t.\norg http://example.org/foo/bar s:http h:example.org p:/
 * ```
 */
class WebPlatformUrlTestData {
  var input: String? = null
  var base: String? = null
  var scheme = ""
  var username = ""
  var password: String? = null
  var host = ""
  var port = ""
  var path = ""
  var query = ""
  var fragment = ""

        println(failure)
      }
      throw failures.first()
    }
  }

  private fun testToAscii(
    input: String,
    output: String?,
    comment: String?,
  ) {
    val url = "https://$input/".toHttpUrlOrNull()
    assertThat(url?.host, name = comment ?: input).isEqualTo(output)
  }

  class DoNotReadRequestBody(
    val http2ErrorCode: Int = 0,
  ) : SocketPolicy

  /** Don't trust the client during the SSL handshake. */
  object FailHandshake : SocketPolicy

  /**
   * Shutdown the socket input after sending the response. For testing bad behavior.
   *
   * See [SocketPolicy] for reasons why this can cause test flakiness and how to avoid it.
   */
  object ShutdownInputAtEnd : SocketPolicy

  /**