chore(test): add test for cache control and security headers

handler/middleware/cross_site_request_forgery.go

@@ -2,11 +2,10 @@ package middleware
 
 import (
 	"fmt"
+	"net/http"
 	"strings"
 
 	"me-fit/service"
-
-	"net/http"
 )
 
 type csrfResponseWriter struct {