Improve the tests Assert for the exception message. Correct an example description. Assert for true instead of truthy.
Improve the tests
Assert for the exception message.
Correct an example description.
Assert for true instead of truthy.

fatso83/Sinon.JS,cjohansen/Sinon.JS,fatso83/Sinon.JS,mroderick/Sinon.JS,cjohansen/Sinon.JS,mroderick/Sinon.JS,mroderick/Sinon.JS,fatso83/Sinon.JS,cjohansen/Sinon.JS