title: Porting JUnit tests from 3.x to 4.x
body: <p>We have a lot of old unit tests which were written with Junit 3.x. I am tasked with porting them to our JUnit 4.x coding standard, which among things, forbids the use of "extends TestCase".</p>
  
  <p>Some of the old tests have a call to <strong>super.setUp()</strong> which I need to now remove, however, I am not sure what is happening in that call. Can I just delete this line of code without worrying or should I replace it with something?</p>