Share object reference between different JUnit tests

Question

I have a couple of JUnit tests which need a reference for a expensive resource (a WALA class hierachie), which needs about 30s to be created. I would like to share this reference in my whole test suite.

I thought about a static member in a base class which is laziely initiated with a @BeforeClass method. After test is run the JVM should be determined anyway.

Is there any other way to accomplish this? Or any other best practice?

Answer 1

Create an explicit test suite (cf. this answer) to run these tests, and use @BeforeClass and @AfterClass on the suite itself (cf. this answer):

@RunWith(Suite.class)
@Suite.SuiteClasses({Test1.class, Test2.class})
public class MySuite {
    @BeforeClass
    public static void initResource() {
        MyExpensiveResource.init();
    }

    @AfterClass
    public static void disposeResource() {
        MyExpensiveResource.dispose();
    }
}