@ParameterizedTest
  @ArgumentsSource(ProtocolParamProvider::class)
  fun authenticate(protocol: Protocol) {
    setUp(protocol)
    server.enqueue(
      MockResponse(
        code = HttpURLConnection.HTTP_UNAUTHORIZED,
        headers = headersOf("www-authenticate", "Basic realm=\"protected area\""),
        body = "Please authenticate.",
      ),
    )
    server.enqueue(
      MockResponse(body = "Successful auth!"),