1989 Mercury Sable Windshield Wiper Spray Pump

All wiper control functions work fine except the wiper fluid spray. I believe that breaker #2 on the fuse panel controls the pump. Q#1. How do you test a circuit breaker to determine if it is working.
Q#2. Is the wiper fluid pump located on the bottom of the resurvoir? What other checks shall I make to determine why the fluid will not spray. FYI, the fluid resurvoir is full and I do not hear a pump running. That is if you can actually hear that pump running? Can you help?