public class SupportController{
public void disableUserAccount(String username) throws Exception {
UserAccount userAccount =
new UserAccoun
I would suggest using Mock Objects.
Besides that, you can check the JUnit FAQ, where you can find a section about testing methods that return void.
Often if a method doesn't return a value, it will have some side effect. Actually, if it doesn't return a value AND doesn't have a side effect, it isn't doing anything.
There may be a way to verify that the side effect actually occurred as expected