JUnit4 基本用法实例

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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。

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