chore: adjust testURL priority

Author: Larvan2

adapter/outboundgroup/parser.go

@@ -88,6 +88,29 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 	}
 	groupOption.ExpectedStatus = status
 
+	if len(groupOption.Use) != 0 {
+		PDs, err := getProviders(providersMap, groupOption.Use)
+		if err != nil {
+			return nil, fmt.Errorf("%s: %w", groupName, err)
+		}
+
+		// if test URL is empty, use the first health check URL of providers
+		if groupOption.URL == "" {
+			for _, pd := range PDs {
+				if pd.HealthCheckURL() != "" {
+					groupOption.URL = pd.HealthCheckURL()
+					break
+				}
+			}
+			if groupOption.URL == "" {
+				groupOption.URL = C.DefaultTestURL
+			}
+		} else {
+			addTestUrlToProviders(PDs, groupOption.URL, expectedStatus, groupOption.Filter, uint(groupOption.Interval))
+		}
+		providers = append(providers, PDs...)
+	}
+
 	if len(groupOption.Proxies) != 0 {
 		ps, err := getProxies(proxyMap, groupOption.Proxies)
 		if err != nil {
@@ -98,49 +121,28 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
 			return nil, fmt.Errorf("%s: %w", groupName, errDuplicateProvider)
 		}
 
-		if groupOption.Interval == 0 {
-			groupOption.Interval = 300
-		}
-
 		if groupOption.URL == "" {
 			groupOption.URL = C.DefaultTestURL
 		}
 
+		// select don't need auto health check
+		if groupOption.Type != "select" && groupOption.Type != "relay" {
+			if groupOption.Interval == 0 {
+				groupOption.Interval = 300
+			}
+		}
+
 		hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.TestTimeout), uint(groupOption.Interval), groupOption.Lazy, expectedStatus)
 
 		pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
 		if err != nil {
 			return nil, fmt.Errorf("%s: %w", groupName, err)
 		}
 
-		providers = append(providers, pd)
+		providers = append([]types.ProxyProvider{pd}, providers...)
 		providersMap[groupName] = pd
 	}
 
-	if len(groupOption.Use) != 0 {
-		list, err := getProviders(providersMap, groupOption.Use)
-		if err != nil {
-			return nil, fmt.Errorf("%s: %w", groupName, err)
-		}
-
-		if groupOption.URL == "" {
-			for _, p := range list {
-				if p.HealthCheckURL() != "" {
-					groupOption.URL = p.HealthCheckURL()
-				}
-				break
-			}
-
-			if groupOption.URL == "" {
-				groupOption.URL = C.DefaultTestURL
-			}
-		}
-
-		// different proxy groups use different test URL
-		addTestUrlToProviders(list, groupOption.URL, expectedStatus, groupOption.Filter, uint(groupOption.Interval))
-		providers = append(providers, list...)
-	}
-
 	var group C.ProxyAdapter
 	switch groupOption.Type {
 	case "url-test":