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moby--moby/pkg/system/utimes_test.go

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package system
import (
"io/ioutil"
"os"
"path/filepath"
"syscall"
"testing"
)
func prepareFiles(t *testing.T) (string, string, string, string) {
dir, err := ioutil.TempDir("", "docker-system-test")
if err != nil {
t.Fatal(err)
}
file := filepath.Join(dir, "exist")
if err := ioutil.WriteFile(file, []byte("hello"), 0644); 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, dir
}
func TestLUtimesNano(t *testing.T) {
file, invalid, symlink, dir := prepareFiles(t)
defer os.RemoveAll(dir)
before, err := os.Stat(file)
if err != nil {
t.Fatal(err)
}
ts := []syscall.Timespec{{0, 0}, {0, 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")
}
}