async Task TryMoveOldCopyToHistory(string backupDir, string sourceFile, byte[] destContent)
{
if (_historyProvider == null)
{
return;
}
var historyDirName = _historyProvider.ConvertFileNameToHistoryDirectoryName(sourceFile);
var historyDirPath = _destination.CombinePath(backupDir, historyDirName);
if (await _destination.IsDirectoryExists(historyDirPath))
{
await TryCleanupHistoryDirectory(historyDirPath);
}
else
{
await _destination.CreateDirectory(historyDirPath);
}
var nameInHistory = _historyProvider.ConvertFileNameToVersionedFileName(sourceFile);
var pathInHistory = _destination.CombinePath(historyDirPath, nameInHistory);
_logger?.LogDebug($"TryMoveOldCopyToHistory('{backupDir}', '{sourceFile}'): create file in history: '{pathInHistory}'");
await _destination.CreateFile(pathInHistory, destContent);
_changeValidator?.OnFileChanged(pathInHistory);
}
public async void FilesInDirectoryBackedUpWithHistory()
{
var sourceDir = "source";
var backupDir = "backup";
var fileToBackup = "file";
var firstContent = new byte[0];
var secondContent = new byte[] { 42 };
// Ordinary case
await _fs.CreateDirectory(sourceDir);
await _fs.CreateFile(_fs.CombinePath(sourceDir, fileToBackup), firstContent);
await _backup.Dump(sourceDir, backupDir);
// Modify file
await _fs.DeleteFile(fileToBackup);
await _fs.CreateFile(fileToBackup, secondContent);
await _backup.Dump(sourceDir, backupDir);
// Latest file must exists
Assert.True(await _fs.IsFileExists(_fs.CombinePath(backupDir, sourceDir, fileToBackup)));
Assert.Equal(secondContent, await _fs.ReadAllBytes(fileToBackup));
// First file must exists in history
var historyDirName = _history.ConvertFileNameToHistoryDirectoryName(fileToBackup);
var historyDirPath = _fs.CombinePath(backupDir, sourceDir, historyDirName);
Assert.True(await _fs.IsDirectoryExists(historyDirPath));
var filesInside = (await _fs.GetFiles(historyDirPath)).ToList();
Assert.True(filesInside.Count == 1);
var fileName = filesInside[0];
var contentInHistory = await _fs.ReadAllBytes(_fs.CombinePath(backupDir, sourceDir, historyDirName, fileName));
Assert.Equal(firstContent, contentInHistory);
}