JUnit base test auto setUp

Question

I'd like to write a BaseTest class that simply provides a "universal setUp() method" for all extending subclasses:

public class BaseTest {
    @Before
    public void setUp() {
        System.out.println("setUp() was called!");

        // Doesn't really matter what this is doing...
        EnvironmentConfigurator.configureEnvForTesting();
    }
}

Then:

public class WidgetTest extends BaseTest {
    @Test
    public void test1() {
        fail();
    }

    @Test
    public void test2() {
        fail();
    }
}

So ideally, every time a subclass method annotated by @Test is executed, JUnit would first call the BaseTest#setUp() method, which does whatever (doesn't really matter). Perhaps its resetting some mock states to an initial value so that each test can start on a "clean slate", etc. Again, doesn't really matter.

Unfortunately when I run this code, I only see setUp() was called! printing to the screen once, so clearly BaseTest isn't "wrapping" my @Test methods the way I want. Is there any way to achieve this? Thanks in advance!

Answer 1

I just ran this and both test methods are called and both times setUp is called.

If you have a @Before annotated method in the derived class as well then you will need to name the base class setup method to something different e.g. setUpBase() because if the method names are the same only the @Before annotated method in the derived class is called as it would be overriding the method in the base class.