Ronen Festinger - 2008-09-06

hi, first i would like to say that the tutorials are excellent, thank you very much for that, i really appreciate the effort.
about lesson 12 ,in testcheckout method, i saw there you called setup() to create the objects, but this call is also made before , in the the method testaddbook above, so  i think it's called twice when you run the test.
doesn't it make an error to try to create same objects twice ? and if it doesn't, isn't it unnecesary to call setup() again?
thanks again.