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//go:build linux || freebsd
// +build linux freebsd
package system // import "github.com/docker/docker/pkg/system"
import (
"os"
"path/filepath"
"syscall"
"testing"
)
// prepareFiles creates files for testing in the temp directory
func prepareFiles(t *testing.T) (file, invalid, symlink string) {
t.Helper()
dir := t.TempDir()
file = filepath.Join(dir, "exist")
if err := os.WriteFile(file, []byte("hello"), 0o644); err != nil {
t.Fatal(err)
}
invalid = filepath.Join(dir, "doesnt-exist")
symlink = filepath.Join(dir, "symlink")
if err := os.Symlink(file, symlink); err != nil {
t.Fatal(err)
}
return file, invalid, symlink
}
func TestLUtimesNano(t *testing.T) {
file, invalid, symlink := prepareFiles(t)
before, err := os.Stat(file)
if err != nil {
t.Fatal(err)
}
ts := []syscall.Timespec{{Sec: 0, Nsec: 0}, {Sec: 0, Nsec: 0}}
if err := LUtimesNano(symlink, ts); err != nil {
t.Fatal(err)
}
symlinkInfo, err := os.Lstat(symlink)
if err != nil {
t.Fatal(err)
}
if before.ModTime().Unix() == symlinkInfo.ModTime().Unix() {
t.Fatal("The modification time of the symlink should be different")
}
fileInfo, err := os.Stat(file)
if err != nil {
t.Fatal(err)
}
if before.ModTime().Unix() != fileInfo.ModTime().Unix() {
t.Fatal("The modification time of the file should be same")
}
if err := LUtimesNano(invalid, ts); err == nil {
t.Fatal("Doesn't return an error on a non-existing file")
}
}
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