@Test
public void afterCompletion_addsHttpRouteAttribute_coercesNullToEmpty() {

  when(request.getAttribute("brave.SpanCustomizer")).thenReturn(span);
  interceptor.afterCompletion(request, response, controller, null);
  verify(request).getAttribute("brave.SpanCustomizer");
  verify(request).getAttribute(BEST_MATCHING_PATTERN_ATTRIBUTE);
  verify(request).setAttribute("http.route", "");
  verifyNoMoreInteractions(request, response, parser, span);
}