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// Copyright 2015 The Vanadium 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 jiri
import (
// TestFindRootEnvSymlink checks that FindRoot interprets the value of the
// -root flag as a path, evaluates any symlinks the path might contain, and
// returns the result.
func TestFindRootEnvSymlink(t *testing.T) {
// Create a temporary directory.
tmpDir, err := ioutil.TempDir("", "")
if err != nil {
t.Fatalf("TempDir() failed: %v", err)
defer func() { os.RemoveAll(tmpDir) }()
// Make sure tmpDir is not a symlink itself.
tmpDir, err = filepath.EvalSymlinks(tmpDir)
if err != nil {
t.Fatalf("EvalSymlinks(%v) failed: %v", tmpDir, err)
// Create a directory and a symlink to it.
root, perm := filepath.Join(tmpDir, "root"), os.FileMode(0700)
symRoot := filepath.Join(tmpDir, "sym_root")
if err := os.MkdirAll(root, perm); err != nil {
t.Fatalf("%s", err)
if err := os.Symlink(root, symRoot); err != nil {
t.Fatalf("%s", err)
// Set the -root flag to the symlink created above and check that
// FindRoot() evaluates the symlink.
rootFlag = symRoot
if got, want := FindRoot(), root; got != want {
t.Fatalf("unexpected output: got %v, want %v", got, want)