OP#792 initial commit after fork

cmd/bitrot_test.go

@@ -0,0 +1,83 @@
+// 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 (
+	"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(t.Context(), 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)
+	}
+}