//go:build linux || freebsd
// +build linux freebsd

package system // import "github.com/docker/docker/pkg/system"

import (
	"os"
	"path/filepath"
	"testing"
)

// TestLstat tests Lstat for existing and non existing files
func TestLstat(t *testing.T) {
	tmpDir := t.TempDir()
	file := filepath.Join(tmpDir, "exist")
	if err := os.WriteFile(file, []byte("hello"), 0o644); err != nil {
		t.Fatal(err)
	}

	statFile, err := Lstat(file)
	if err != nil {
		t.Fatal(err)
	}
	if statFile == nil {
		t.Fatal("returned empty stat for existing file")
	}

	statInvalid, err := Lstat(filepath.Join(tmpDir, "nosuchfile"))
	if err == nil {
		t.Fatal("did not return error for non-existing file")
	}
	if statInvalid != nil {
		t.Fatal("returned non-nil stat for non-existing file")
	}
}