@Test public void handleStart_addsRemoteEndpointWhenParsed() {

  handler = new HttpHandler(HttpRequestParser.DEFAULT, HttpResponseParser.DEFAULT) {
    @Override void parseRequest(HttpRequest request, Span span) {
      span.remoteIpAndPort("1.2.3.4", 0);
    }
  };
  handler.handleStart(request, span);
  verify(span).remoteIpAndPort("1.2.3.4", 0);
}