assertThat(headers.values("key")).containsExactly("value")
    assertThat(headers.values("ping")).containsExactly("pong")
    assertThat(headers.values("kit")).containsExactly("kat")
  }

  @Test fun addThrowsOnEmptyName() {
    assertFailsWith<IllegalArgumentException> {
      Headers.Builder().add(": bar")
    }
    assertFailsWith<IllegalArgumentException> {

          "jat?otamuk???nan&ak?n&ah?es???o&ay?n&a&ganihcawak?simuzi?tak??eba?ikibah?oyot??t&anim?iad?omamihs??uhc??ust&oimuzi?tes????ou&kuf!.&a&d&amay?eos??g&no?ok?usak??hiku?k&awayim?uzii...