Running a JUnit4 test - from a java program

Question

I was wondering how to run some JUnit4 test inside a java program. Basically - depending on some conditions during runtime I need to decide which test runner to use. Using Junit3 I could override runTest method from TestCase class - but in JUnit4 tests do not extend TestCase class so I have nothing to override... Is there maybe some method that I need to implement... or sth else...

Answer 1

Here's some sample code for you:

public void checkTests() throws org.junit.runners.model.InitializationError {
    checkTestClass((Class<?>) MyTestClss.class);
}

private void checkTestClass(Class<?> theClass) throws InitializationError {
    final RunNotifier notifier = new RunNotifier();
    notifier.addListener(new RunListener() {
        @Override
        public void testFailure(Failure failure) throws Exception {
            Assert.fail(failure.getMessage());

        }
    });

    final Runner runner = new BlockJUnit4ClassRunner(theClass);

    runner.run(notifier);
}