bd,
I personally would not hesitate to jumper the two large solenoid terminals with a hefty screwdriver.
If the starter is good & the solenoid is bad, it will crank over.
Be aware that you will get some big sparks at the screwdriver, if the starter is working, about 200 amps. If you are in anyway uncomfortable with doing this, find another procedure. Like taking the starter to your local car parts store & ask them to test it.
D