// Check non existent directory.
	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

	file := path.Join(os.TempDir(), "issue")
	if err := os.WriteFile(file, []byte(""), 0o644); err != nil {
		t.Fatal(err)
	}
	defer os.RemoveAll(file)

	// Check if file is given.
	if _, err := readDir(path.Join(file, "mydir")); err != errFileNotFound {

			z.Name, bts, err = msgp.ReadStringBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Name")
				return
			}
		case "Created":
			z.Created, bts, err = msgp.ReadTimeBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Created")
				return
			}
		case "Deleted":
			z.Deleted, bts, err = msgp.ReadTimeBytes(bts)
			if err != nil {
				err = msgp.WrapError(err, "Deleted")
				return
			}

	if err != nil {
		t.Fatal(err)
	}
	_, err = writer.Write([]byte("aaaaa"))
	if err != nil {
		t.Fatal(err)
	}
	if bw, ok := writer.(io.Closer); ok {
		bw.Close()
	}

	reader := newBitrotReader(disk, nil, volume, filePath, 35, bitrotAlgo, bitrotWriterSum(writer), 10)
	b := make([]byte, 10)
	if _, err = reader.ReadAt(b, 0); err != nil {
		t.Fatal(err)
	}
	if _, err = reader.ReadAt(b, 10); err != nil {
		t.Fatal(err)
	}

	if err := r.Encryption.Validate(); err != nil {
		return err
	}

	for _, tag := range r.Flags.Filter.Tags {
		if err := tag.Validate(); err != nil {
			return err
		}
	}

	for _, meta := range r.Flags.Filter.Metadata {
		if err := meta.Validate(); err != nil {
			return err
		}
	}

	return r.Flags.Retry.Validate()

	b.ResetTimer()

	if err := req.ParseForm(); err != nil {
		b.Fatal(err)
	}

	b.RunParallel(func(pb *testing.PB) {
		for pb.Next() {
			req.Form.Get("uploadId")
		}
	})

	// Benchmark ends here. Stop timer.
	b.StopTimer()
}

// BenchmarkURLQuery - benchmark URL memory allocations
func BenchmarkURLQuery(b *testing.B) {

	}
}

// RemoveAll captures time taken to call the underlying os.RemoveAll
func RemoveAll(dirPath string) (err error) {
	defer updateOSMetrics(osMetricRemoveAll, dirPath)(err)
	return os.RemoveAll(dirPath)
}

// Mkdir captures time taken to call os.Mkdir
func Mkdir(dirPath string, mode os.FileMode) (err error) {
	defer updateOSMetrics(osMetricMkdir, dirPath)(err)

			return errTierBucketNotFound
		case isErrSignatureDoesNotMatch(err):
			return errTierInvalidCredentials
		default:
			return tierPermErr{
				Op:  tierGet,
				Err: err,
			}
		}
	}
	if err = w.Remove(ctx, probeObject, remoteVersionID); err != nil {
		if _, ok := err.(BackendDown); ok {
			return err
		}
		return tierPermErr{
			Op:  tierDelete,
			Err: err,
		}
	}
	return err
}

	return errors.Is(err, errDiskNotFound) ||
		errors.Is(err, errConfigNotFound) ||
		errors.Is(err, context.DeadlineExceeded) ||
		errors.Is(err, errErasureWriteQuorum) ||
		errors.Is(err, errErasureReadQuorum) ||
		errors.Is(err, io.ErrUnexpectedEOF) ||
		errors.As(err, &rquorum) ||
		errors.As(err, &wquorum) ||
		isErrObjectNotFound(err) ||
		isErrBucketNotFound(err) ||

func TestReadXLMetaNoData(t *testing.T) {
	f, err := os.Open("testdata/xl.meta-corrupt.gz")
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()

	gz, err := gzip.NewReader(bufio.NewReader(f))
	if err != nil {
		t.Fatal(err)
	}

	buf, err := io.ReadAll(gz)
	if err != nil {
		t.Fatal(err)
	}

	_, err = readXLMetaNoData(bytes.NewReader(buf), int64(len(buf)))
	if err == nil {

		return path, errInvalidArgument
	}

	var err error
	// Disallow relative paths, figure out absolute paths.
	path, err = filepath.Abs(path)
	if err != nil {
		return path, err
	}

	fi, err := Lstat(path)
	if err != nil && !osIsNotExist(err) {
		return path, err
	}
	if osIsNotExist(err) {
		// Disk not found create it.
		if err = mkdirAll(path, 0o777, ""); err != nil {
			return path, err
		}
	}