@RunWith(Arquillian.class)
public class BeforeTestCase {

    private boolean initialized = false;

    @Before
    public void before() {
        initialized = true;
    }

    @Test
    public void test() {
        Assert.assertTrue("@Before should have initialized test", initialized);
    }
}

<dependency>
    <groupId>org.jboss.arquillian.junit</groupId>
    <artifactId>arquillian-junit-standalone</artifactId>
    <scope>test</scope>
</dependency>