How to run test methods in order with Junit

So for tests like these - where the steps are dependent on each other - you should really execute them as one unit. You should really be doing something like:

@Test
public void registerWelcomeAndQuestionnaireUserTest(){
    // code
    // Register
    // Welcome
    // Questionnaire
}

As @Jeremiah mentions below, there are a handful of unique ways that separate tests can execute unpredictably.

Now that I've said that, here's your solution.

If you want separate tests, you can use @FixMethodOrder and then do it by NAME_ASCENDING. This is the only way I know.

@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class TestMethodOrder {

    @Test
    public void testA() {
        System.out.println("first");
    }
    @Test
    public void testC() {
        System.out.println("third");
    }
    @Test
    public void testB() {
        System.out.println("second");
    }
}

will execute:

testA(), testB(), testC()

In your case:

@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class ThisTestsEverything{

    @Test
    public void T1_registerUser(){
        // code
    }

    @Test
    public void T2_welcomeNewUser(){
        // code
    }

    @Test
    public void T3_questionaireNewUser(){
        // code
    }

}

You can not run your test methods in order as how they are written. The point is test must be independent each other. JUnit doesn't encourage dependent tests.

But if you are very want...

There is the @FixMethodOrder annotation. Please, read the following Annotation Type FixMethodOrder