本教程介绍了在JUnit4中支持的基本注解。
import org.junit.*; import static org.junit.Assert.*; import java.util.*; /** * @author yiibai * */ public class JunitTest1 { private Collection collection; @BeforeClass public static void oneTimeSetUp() { // one-time initialization code System.out.println("@BeforeClass - oneTimeSetUp"); } @AfterClass public static void oneTimeTearDown() { // one-time cleanup code System.out.println("@AfterClass - oneTimeTearDown"); } @Before public void setUp() { collection = new ArrayList(); System.out.println("@Before - setUp"); } @After public void tearDown() { collection.clear(); System.out.println("@After - tearDown"); } @Test public void testEmptyCollection() { assertTrue(collection.isEmpty()); System.out.println("@Test - testEmptyCollection"); } @Test public void testOneItemCollection() { collection.add("itemA"); assertEquals(1, collection.size()); System.out.println("@Test - testOneItemCollection"); } }
运行结果:
@BeforeClass - oneTimeSetUp @Before - setUp @Test - testEmptyCollection @After - tearDown @Before - setUp @Test - testOneItemCollection @After - tearDown @AfterClass - oneTimeTearDown
在JUnit 4中,必须声明“@BeforeClass”和“@AfterClass”的方法是静态方法。