Add Priority to auth rules

auth/service/sevice_test.go

@@ -0,0 +1,26 @@
+package service
+
+import (
+	"testing"
+
+	pb "github.com/micro/go-micro/v2/auth/service/proto"
+)
+
+func TestListRulesSorting(t *testing.T) {
+	s := &svc{
+		rules: []*pb.Rule{
+			&pb.Rule{Priority: 1},
+			&pb.Rule{Priority: 3},
+			&pb.Rule{Priority: 2},
+		},
+	}
+
+	var priorities []int32
+	for _, r := range s.listRules() {
+		priorities = append(priorities, r.Priority)
+	}
+
+	if priorities[0] != 1 || priorities[1] != 2 || priorities[2] != 3 {
+		t.Errorf("Incorrect Rule Sequence")
+	}
+}