public void ReplaceUndo() { const string code = @"int ione ione = 5 int itwo itwo = 2 int ithree ithree = ione "; var commands = GenerateCommands(code); var mutation = new ReplaceCommandMutation(new Random(), commands); mutation.Transform(); mutation.Undo(); var assertCommands = GenerateCommands(code); Assert.IsTrue(AreCollectionsEquals(commands, assertCommands)); }