test: make tests stable (#1968)

* test: make tests stable

* test: fix fails

rest/engine.go

@@ -196,7 +196,7 @@ func (ng *engine) print() {
 
 	sort.Strings(routes)
 
-	fmt.Println("routes:")
+	fmt.Println("Routes:")
 	for _, route := range routes {
 		fmt.Printf("  %s\n", route)
 	}

rest/server_test.go

@@ -350,7 +350,7 @@ func TestServer_PrintRoutes(t *testing.T) {
 Name: foo
 Port: 54321
 `
-		expect = `routes:
+		expect = `Routes:
   GET /bar
   GET /foo
   GET /foo/:bar