Why isn't my @BeforeClass method running?

I have the following code:

    @BeforeClass
    public static void setUpOnce() throws InterruptedException {
        fail("LOL");
    }

And various other methods that are either @Before, @After, @Test or @AfterClass methods.

The test doesn't fail on start up as it seems it should. Can someone help me please?

I have JUnit 4.5

The method is failing in an immediate call to setUp() which is annotated as @before. Class def is :

public class myTests extends TestCase {

Solution 1:

do NOT extend TestCase AND use annotations at the same time!
If you need to create a test suite with annotations, use the RunWith annotation like:

@RunWith(Suite.class)
@Suite.SuiteClasses({ MyTests.class, OtherTest.class })
public class AllTests {
    // empty
}


public class MyTests {  // no extends here
    @BeforeClass
    public static void setUpOnce() throws InterruptedException {
        ...
    @Test
    ...

(by convention: class names with uppercase letter)

Solution 2:

the method must be static and not directly call fail (otherwise the other methods won't be executed).

The following class shows all the standard JUnit 4 method types:

public class Sample {

    @BeforeClass
    public static void beforeClass() {
        System.out.println("@BeforeClass");
    }

    @Before
    public void before() {
        System.out.println("@Before");
    }

    @Test
    public void test() {
        System.out.println("@Test");
    }

    @After
    public void after() {
        System.out.println("@After");
    }

    @AfterClass
    public static void afterClass() {
        System.out.println("@AfterClass");
    }

}

and the ouput is (not surprisingly):

@BeforeClass
@Before
@Test
@After
@AfterClass

Solution 3:

Make sure you imported @Test from the correct package.

• Correct package: org.junit.Test
• Incorrect pacakge: org.junit.jupiter.api.Test

Please note that this is a solution for: If your @Before, @Atter, etc did not get called at all.

Solution 4:

Make sure that :

• Your test class doesn't inherits from TestCase
• The @BeforeClass method is static
• You don't have more than one @BeforeClass method in test class hierarchy (only the most specialized @BeforeClass method will be executed)