public void CreateBackup()
{
string fn = Path.GetTempFileName();
string backupDir = Path.GetRandomFileName();
Directory.CreateDirectory(backupDir);
DateTime dt = new DateTime(2015, 11, 23, 9, 31, 00);
File.SetLastWriteTime(fn, dt);
BackupFile bf = BackupFile.CreateBackup(fn, backupDir);
Assert.IsNotNull(bf);
Assert.AreEqual(dt, bf.TimeStamp.DateTime);
Directory.Delete(backupDir, true);
File.Delete(fn);
}