blob: ba624ed5032d5f8e01060fcbf54f1f6a854ef9ff [file] [log] [blame]
// Copyright 2021 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package testing
import (
// VarString define a structure for global runtime variables of string type.
type VarString struct {
v *testing.VarString
// RegisterVarString creates and registers a new VarString
func RegisterVarString(name, defaultValue, desc string) *VarString {
reg := testing.GlobalRegistry()
callerFunc := caller.Get(2)
v, err := registerVarString(reg, name, defaultValue, desc, callerFunc)
if err != nil {
return v
// registerVarString creates and registers a new VarString
func registerVarString(reg *testing.Registry, name, defaultValue, desc, callerFunc string) (*VarString, error) {
if !checkVarName(callerFunc, name) {
return nil, fmt.Errorf("Global runtime variable %q does not follow naming convention <pkg>.<rest_of_name>", name)
v := testing.NewVarString(name, defaultValue, desc)
return &VarString{v: v}, nil
// Name returns the name of the variable.
func (v *VarString) Name() string {
return v.v.Name()
// Value returns value of the variable.
func (v *VarString) Value() string {
return v.v.Value()
// checkVarName check if variable name follows naming convention.
func checkVarName(funcName, name string) bool {
pkg, _ := packages.SplitFuncName(funcName)
base := pkg[strings.LastIndex(pkg, "/")+1:]
return strings.HasPrefix(name, base+".")