var base: String? = null
  var scheme = ""
  var username = ""
  var password: String? = null
  var host = ""
  var port = ""
  var path = ""
  var query = ""
  var fragment = ""

  fun expectParseFailure() = scheme.isEmpty()

  private operator fun set(
    name: String,
    value: String,
  ) {
    when (name) {
      "s" -> scheme = value
      "u" -> username = value
      "pass" -> password = value

    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
    }

    assertThat(url, "Expected URL to parse successfully, but was null")
      .isNotNull()
    val effectivePort =