assertThat(parse("permessage-deflate; unknown_parameter=15; unknown_parameter=15"))
      .isEqualTo(WebSocketExtensions(perMessageDeflate = true, unknownValues = true))
  }

  @Test
  fun unexpectedValue() {
    assertThat(parse("permessage-deflate; client_no_context_takeover=true"))
      .isEqualTo(
        WebSocketExtensions(
          perMessageDeflate = true,
          clientNoContextTakeover = true,

                    if (value != null) unexpectedValues = true // Unexpected value!
                    clientNoContextTakeover = true
                  }

                  name.equals("server_max_window_bits", ignoreCase = true) -> {
                    if (serverMaxWindowBits != null) unexpectedValues = true // Repeated parameter!