Why isn't my @BeforeClass method running?

Question

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 {

Can you confirm what version of junit you have in your classpath? — Peter, Apr 09 '09 at 06:28

score 72 · Accepted Answer · answered Apr 09 '09 at 08:46

72

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)

answered Apr 09 '09 at 08:46

user85421

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10
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Yes this is a better option. Didn't know about these @Suite and @RunWith annotations. +1 and thanks for your inputs. – Adeel Ansari Apr 09 '09 at 09:03
thanks. I had a hard time to find it last week.. kind of just in time – user85421 Apr 09 '09 at 09:44
Thank you Carlos, works fine now. Also thanks for all your help Vinegar. – Lynden Shields Apr 13 '09 at 23:30
@CarlosHeuberger i'm extending a class which has methods like `logins` and `sessions` and I need to run @BeforeClass annotated method also. Is that possible? – yashhy Jan 06 '14 at 07:25
@yashhy - sorry, this should be asked as a question, not as a comment. – user85421 Jan 07 '14 at 12:18
1

@yashhy 4 years late but for the other readers, yes that's possible. – MAC Jun 21 '18 at 01:45

score 20 · Answer 2 · answered May 13 '20 at 15:38

20

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.

answered May 13 '20 at 15:38

Kishore

201
2
4

Vladimir · Answer 3 · 2009-04-09T06:34:41.980

17

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

edited Apr 09 '09 at 06:34

answered Apr 09 '09 at 06:24

Vladimir

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2
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You are correct, thanks, but did not start working once i changed to static. – Lynden Shields Apr 09 '09 at 06:29
Show us the class definition. It might be the case that your class is a subclass of someother, and that parent class may have some method annotated as @BeforeClass, and that method of the parent class is ending up with some errors and causing the halt. – Adeel Ansari Apr 09 '09 at 06:31
Otherwise, try to add a normal test method. – Adeel Ansari Apr 09 '09 at 06:35
The method is failing in an immediate call to setUp() which is annotated as @before. Class def is : public class myTests extends TestCase { – Lynden Shields Apr 09 '09 at 06:37
Are you having any @Test methods? – Adeel Ansari Apr 09 '09 at 06:43
It doesn't work – user710818 Jan 07 '22 at 04:41

score 2 · Answer 4 · answered Apr 01 '16 at 09:06

2

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)

answered Apr 01 '16 at 09:06

ben75

29,217
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Running jUnit 4.11 allows more than one @BeforeClass , one in your class and one in a super class, and calls both. – fishjd Apr 22 '16 at 16:40

score 2 · Answer 5 · answered Jan 06 '21 at 23:50

2

Check your imports.

@Before
@After
@BeforeClass (this should be static)
@AfterClass (this should be static)

and @Test annotations should import from same path.

answered Jan 06 '21 at 23:50

A. Berk

127
1
3

score 0 · Answer 6 · answered Mar 30 '15 at 14:27

In order that the before annotated function will run , I had to do the following: If you use Maven , add a dependency to Junit 4.11+:

      <properties>
              <version.java>1.7</version.java>
              <version.log4j>1.2.13</version.log4j>
              <version.mockito>1.9.0</version.mockito>
              <version.power-mockito>1.4.12</version.power-mockito>
               <version.junit>4.11</version.junit>   
              <version.power-mockito>1.4.12</version.power-mockito>
      </properties>

and the dependency:

      <dependencies>
        <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>
         <version>${version.junit}</version>
         <scope>test</scope>
       </dependency>    
        .
        .
        .
      </dependencies>

Make sure your Junit Test class is not extending The TestCase class, since this will cause overlapping with Older version:

public class TuxedoExceptionMapperTest{
   protected TuxedoExceptionMapper subject;

   @Before
   public void before() throws Exception {
     subject = TuxedoExceptionMapper.getInstance();
      System.out.println("Start");
      MockitoAnnotations.initMocks(this);
   }
}

score 0 · Answer 7 · answered Apr 20 '23 at 17:32

0

Things to check:

Junit package is: org.junit.Test
You don't have a static block. (I learned it the hard way)

answered Apr 20 '23 at 17:32

Amrit

11
1

Why isn't my @BeforeClass method running?

7 Answers7

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