add comments for testing, utils and validation packages

validation/util.go

@@ -41,13 +41,16 @@ func init() {
 	}
 }
 
+// Valid function type
 type ValidFunc struct {
 	Name   string
 	Params []interface{}
 }
 
+// Validate function map
 type Funcs map[string]reflect.Value
 
+// validate values with named type string
 func (f Funcs) Call(name string, params ...interface{}) (result []reflect.Value, err error) {
 	defer func() {
 		if r := recover(); r != nil {