@Test    测试方法 
@Test(expected=ArithmeticException.class)
检查被测方法是否抛出ArithmeticException异常 

@Before  每一个测试方法之前执行
@After   每一个测试方法之后执行
@Ignore  忽略测试方法 

@BeforeClass  必须为static void 
@AfterClass   必须为static void 

执行顺序

@BeforeClass -> @Before -> @Test -> @After -> @AfterClass

@Before -> @Test -> @After



package dyyx.demo.junit4;

import java.util.ArrayList;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Ignore;
import org.junit.Test;

public class Junit4Test {

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

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

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

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

	@Test
	public void test1() {
		System.out.println("test1()");
		Assert.assertEquals(3, 1 + 2);
	}

	@Test
	public void test2() {
		System.out.println("test2()");
		Assert.assertEquals(3, 1 + 2);
	}

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

	@Test(expected = ArithmeticException.class)
	public void testArithmeticException() {
		System.out.println(1 / 0);
	}

	@Test(expected = IndexOutOfBoundsException.class)
	public void testIndexOutOfBoundsException() {
		new ArrayList().get(0);
	}

}

beforeClass()
before()
after()
before()
after()
before()
test1()
after()
before()
test2()
after()
afterClass()



https://gitee.com/dyyx/hellocode/blob/master/demo/springboot1.5.4demo/src/test/java/dyyx/demo/junit4/Junit4Test.java