public void Basic_file_Encryption()
{
String fileName = Path.Combine(Path.GetTempPath(), Guid.NewGuid().ToString());
_sut.SaveFile(fileName, "This is content", false, true);
var content = File.ReadAllText(fileName);
Assert.That(content, Is.Not.EqualTo("This is content"));
content = _sut.GetFileContent(fileName, true);
Assert.That(content, Is.EqualTo("This is content"));
}