Why must jUnit's fixtureSetup be static?

Question

I marked a method with jUnit\'s @BeforeClass annotation, and got this exception saying it must be static. What\'s the rationale? This forces all my init to be on static fiel

Answer 1

It seems that JUnit creates a new instance of the test class for each test method. Try this code out

public class TestJunit
{

    int count = 0;

    @Test
    public void testInc1(){
        System.out.println(count++);
    }

    @Test
    public void testInc2(){
        System.out.println(count++);
    }

    @Test
    public void testInc3(){
        System.out.println(count++);
    }
}

The output is 0 0 0

This means that if the @BeforeClass method is not static then it will have to be executed before each test method and there would be no way to differentiate between the semantics of @Before and @BeforeClass