Improved Bus.set() test.
Improved Bus.set() test.

andrewyoung1991/supriya,Pulgama/supriya,andrewyoung1991/supriya,Pulgama/supriya,josiah-wolf-oberholtzer/supriya,andrewyoung1991/supriya,Pulgama/supriya,Pulgama/supriya