Added the tests for the setOnceReturnValue method #50
Added the tests for the setOnceReturnValue method #50

oculus42/EventEmitter,modulexcite/EventEmitter,Olical/EventEmitter,oculus42/EventEmitter,Olical/EventEmitter,Wolfy87/EventEmitter,Olical/EventEmitter,modulexcite/EventEmitter,Wolfy87/EventEmitter