rename prommetric to prometheous, add unit tests

rest/engine.go

@@ -110,7 +110,7 @@ func (s *engine) bindRoute(fr featuredRoutes, router httpx.Router, metrics *stat
 		handler.TimeoutHandler(time.Duration(s.conf.Timeout)*time.Millisecond),
 		handler.RecoverHandler,
 		handler.MetricHandler(metrics),
-		handler.PromMetricHandler(route.Path),
+		handler.PrometheousHandler(route.Path),
 		handler.MaxBytesHandler(s.conf.MaxBytes),
 		handler.GunzipHandler,
 	)

rest/handler/prometheoushandler.go

@@ -31,7 +31,7 @@ var (
 	})
 )
 
-func PromMetricHandler(path string) func(http.Handler) http.Handler {
+func PrometheousHandler(path string) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			startTime := timex.Now()

rest/handler/prometheoushandler_test.go

@@ -9,7 +9,7 @@ import (
 )
 
 func TestPromMetricHandler(t *testing.T) {
-	promMetricHandler := PromMetricHandler("/user/login")
+	promMetricHandler := PrometheousHandler("/user/login")
 	handler := promMetricHandler(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusOK)
 	}))