minio/cmd/bitrot_test.go

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// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"io"
"testing"
)
func testBitrotReaderWriterAlgo(t *testing.T, bitrotAlgo BitrotAlgorithm) {
tmpDir := t.TempDir()
volume := "testvol"
filePath := "testfile"
disk, err := newLocalXLStorage(tmpDir)
if err != nil {
t.Fatal(err)
}
disk.MakeVol(context.Background(), volume)
writer := newBitrotWriter(disk, volume, filePath, 35, bitrotAlgo, 10)
_, err = writer.Write([]byte("aaaaaaaaaa"))
if err != nil {
t.Fatal(err)
}
_, err = writer.Write([]byte("aaaaaaaaaa"))
if err != nil {
t.Fatal(err)
}
_, err = writer.Write([]byte("aaaaaaaaaa"))
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 = reader.ReadAt(b, 20); err != nil {
t.Fatal(err)
}
if _, err = reader.ReadAt(b[:5], 30); err != nil {
t.Fatal(err)
}
if br, ok := reader.(io.Closer); ok {
br.Close()
}
}
func TestAllBitrotAlgorithms(t *testing.T) {
for bitrotAlgo := range bitrotAlgorithms {
testBitrotReaderWriterAlgo(t, bitrotAlgo)
}
}