How make JUnit print assertion results

Question

How can I get the results of my JUnit assertions to be printed [to standard output]?

I have some tests like this:

@Test
public void test01()
{
    Position p = getPositionAt('a', 1);
    assertNotNull("a1 exists", p);
    assertNotNull("figure exists a1", p.getFigure());
    
    p = getPositionAt('a', 2);
    assertNotNull("exists a2", p);
    assertNull("figure exists a2", p.getFigure());
    
    p = getPositionAt('b', 1);
    assertNotNull("exists b1", p);
    assertNull("figure exists b1", p.getFigure());
}

This is the printed output format I am hoping to get:

a1 exists -success
figure exists a1 -success
exists a2 -success
figure exists a2 -succcess
exists b1 -succcess
figure exists b1 -failed

Is there way to do this using runners and suites? Or does there exist any assertSuccess(), assertFailed() methods?

Answer 1

First, you have two issues not one. When an assertion fails, an AssertionError exception is thrown. This prevents any assertion past this point from being checked. To address this you need to use an ErrorCollector.

Second, I do not believe there is any way built in to JUnit to do this. However, you could implement your own methods that wrap the assertions:

public static void assertNotNull(String description, Object object){
     try{
          Assert.assertNotNull(description, object);
          System.out.println(description + " - passed");
     }catch(AssertionError e){
          System.out.println(description + " - failed");

        throw e;
     }
}