Different Singleton instances with JUnit tests

Question

I have a standalone singleton which successfully passes the test. But with a group of tests this fails since once a singleton is defined it does not allow to reset the instance.

Answer 1

generally beware of singletons, most often they are evil, bad design and tend to represent big yucky global variables (which is bad for maintenance).

still to get tests in place first you can do:

static setInstance(...){ //package visibility or in difficult cases you have to use public
  instance = ...;
}

as said this is more a workaround. so get first tests place, but then refactor away from singleton pattern.