public void SerializeAndExecute(string pattern)
{
var ms = new MemoryStream();
var pgmSer = RantProgram.CompileString(pattern);
pgmSer.SaveToStream(ms);
ms.Seek(0, SeekOrigin.Begin);
var pgmDeser = RantProgram.LoadStream("Test", ms);
var resultSer = rant.Do(pgmSer, seed: 0).Main;
var resultDeser = rant.Do(pgmDeser, seed: 0).Main;
Console.WriteLine($"Before: '{resultSer}'");
Console.WriteLine($"After: '{resultDeser}'");
Assert.AreEqual(resultSer, resultDeser);
}