Nope you won't do this. I mean come on you would shutdown your only source of power, thats just stupid! In a multi engine test you can be asked to shutdown one of the engines and restart it but you won't be asked to do it in a SEP. Restarting engines in the air isn't the easiest things to do, so you certainly won't shutdown your only to see what happens!
Although, it depends what test you are going for? If its the SLMG then it is possible you will be asked to do that since the aircraft is designed to be a glider as well! I wouldn't like to do it in a warrior tho.....