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

I assume you have a private static field within your singleton class to store the initialized instance.

If you do not want to modify your code, you can define a teardown method which run after every test, and in this method you set this static field to null via reflection as seen here.