Customizing which tests to run with JUnit @Parameters?

Question

I have the following code, where each url in listOne is tested with the method testItem:

@Parameters(name="{0}")
public static Collection<Object[]> data() throws Exception {
    final Set<String> listOne = getListOne();
    final Collection<Object[]> data = new ArrayList<>();
    for (final String url : listOne) {
        data.add(new Object[] { url });
    }
    return data;
}

@Test
public void testItem() {
    driverOne.makeDecision(urlToTest);
    assertTrue(driverOne.success(urlToTest);
}

What if I now wanted to add a second list, listTwo, and run a test method defined as follows on JUST the items of listTwo (but not listOne?)

@Test
public void testItemAlternate() {
    driverTwo.makeDecision(urlToTest);
    assertTrue(driverTwo.success(urlToTest));
}

That is, I want driverOne to make the decision for all URLs in listOne, and I want driverTwo to make the decision for all URLs in listTwo. What is the best way to translate this to code? Thanks.

Claas Wilke · Accepted Answer · 2014-07-28 19:39:56Z

1

Cited from: https://github.com/junit-team/junit/wiki/Parameterized-tests

The custom runner Parameterized implements parameterized tests. When running a parameterized test class, instances are created for the cross-product of the test methods and the test data elements.

Thus, I assume No, that's not possible.

If you want to do such a thing I guess that you either

(1) will need to construct two test classes one for each test to be executed with the first collection and one for each test to be executed with the second collection or

(2) will need to use another mechanism besides the @Parameters annotation, maybe hand-crafted.

answered Jul 28, 2014 at 19:39

Claas Wilke

1,9911 gold badge18 silver badges29 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Kevin Welker · Accepted Answer · 2014-07-29 21:26:23Z

0

You could include some test set identifier in your test set data itself, and then use the org.junit.Assume class to help:

@Test
public void testItem() {
    org.junit.Assume.assumeTrue(testSetId.equals("TEST_SET_1"));
    driverOne.makeDecision(urlToTest);
    assertTrue(driverOne.success(urlToTest);
}

@Test
public void testItemAlternate() {
    org.junit.Assume.assumeTrue(testSetId.equals("TEST_SET_2"));
    driverTwo.makeDecision(urlToTest);
    assertTrue(driverTwo.success(urlToTest));
}

answered Jul 29, 2014 at 21:26

Kevin Welker

7,9551 gold badge43 silver badges56 bronze badges

Comments

Kevin Welker · Accepted Answer · 2014-07-29 21:34:54Z

0

As a completely different answer, there exists junit-dataprovider

answered Jul 29, 2014 at 21:34

Kevin Welker

7,9551 gold badge43 silver badges56 bronze badges

Collectives™ on Stack Overflow

Customizing which tests to run with JUnit @Parameters?

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related