Function predictDstFromLogger

fs/sync/sync_test.go:2985–3018

for testing logger:

(ctx context.Context)

// for testing logger:
func predictDstFromLogger(ctx context.Context) context.Context {
	opt := operations.NewLoggerOpt()
	var lock mutex.Mutex

	opt.LoggerFn = func(ctx context.Context, sigil operations.Sigil, src, dst fs.DirEntry, err error) {
		lock.Lock()
		defer lock.Unlock()

		// ignore dirs for our purposes here
		if err == fs.ErrorIsDir {
			return
		}
		winner := operations.WinningSide(ctx, sigil, src, dst, err)
		if winner.Obj != nil {
			file := winner.Obj
			obj, ok := file.(fs.ObjectInfo)
			checksum := ""
			timeFormat := "2006-01-02 15:04:05"
			if ok {
				if obj.Fs().Hashes().GetOne() == hash.MD5 {
					// skip if no MD5
					checksum, _ = obj.Hash(ctx, hash.MD5)
				}
				timeFormat = operations.FormatForLSFPrecision(obj.Fs().Precision())
			}
			errMsg := ""
			if winner.Err != nil {
				errMsg = ";" + winner.Err.Error()
			}
			operations.SyncFprintf(opt.JSON, "%s;%s;%v;%s%s\n", file.ModTime(ctx).Local().Format(timeFormat), checksum, file.Size(), transform.Path(ctx, file.Remote(), false), errMsg) // TODO: should the transform be handled in the sync instead of here?
		}
	}
	return operations.WithSyncLogger(ctx, opt)
}

func DstLsf(ctx context.Context, Fremote fs.Fs) *bytes.Buffer {
	opt := operations.ListJSONOpt{