refactor: minor changes.

middlewares/stats.go

@@ -80,7 +80,7 @@ func (r *responseRecorder) Flush() {
 func (s *StatsRecorder) ServeHTTP(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
 	recorder := &responseRecorder{w, http.StatusOK}
 	next(recorder, r)
-	if recorder.statusCode >= 400 {
+	if recorder.statusCode >= http.StatusBadRequest {
 		s.mutex.Lock()
 		defer s.mutex.Unlock()
 		s.recentErrors = append([]*statsError{

middlewares/stripPrefix_test.go

@@ -93,12 +93,13 @@ func TestStripPrefix(t *testing.T) {
 		t.Run(test.desc, func(t *testing.T) {
 			t.Parallel()
 
-			var actualPath, actualHeader string
+			var actualPath, actualHeader, requestURI string
 			handler := &StripPrefix{
 				Prefixes: test.prefixes,
 				Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 					actualPath = r.URL.Path
 					actualHeader = r.Header.Get(ForwardedPrefixHeader)
+					requestURI = r.RequestURI
 				}),
 			}
 
@@ -110,6 +111,7 @@ func TestStripPrefix(t *testing.T) {
 			assert.Equal(t, test.expectedStatusCode, resp.Code, "Unexpected status code.")
 			assert.Equal(t, test.expectedPath, actualPath, "Unexpected path.")
 			assert.Equal(t, test.expectedHeader, actualHeader, "Unexpected '%s' header.", ForwardedPrefixHeader)
+			assert.Equal(t, test.expectedPath, requestURI, "Unexpected request URI.")
 		})
 	}
 }