Junit对四则运算进行软件测试

package kfu.soft; //静态引用 import static org.junit.Assert.assertEquals; //import org.junit.Assert; import org.junit.*; public class CalculatorJUnit4Test { private Calculator cal; //在所有测试方法执行之前执行一次 @BeforeClass public static void initBefore() { System.out.println("initBefore!"); } // 在所有测试方法执行之后执行一次 @AfterClass public static void endAfter() { System.out.println("endAfter!"); } // 在每个测试方法执行之前执行一次 @Before public void init() { cal = new Calculator(); System.out.println("init!"); } // 在每个测试方法执行之后执行一次 @After public void end() { System.out.println("end!"); } //加法测试 @Test public void myadd() { //Calculator cal = new Calculator(); int result = cal.add(3, 4); assertEquals(7,result); } //减法测试 @Test public void myminus() { //Calculator cal = new Calculator(); int result = cal.minus(3, 4); assertEquals(-1,result); } //乘法测试 @Test public void mymultiphy() { //Calculator cal = new Calculator(); int result = cal.multiphy(3, 4); assertEquals(12,result); } //正常除法功能测试 @Test public void mydivide() { //Calculator cal = new Calculator(); int result = 0; try { result = cal.divide(3, 4); } catch (Exception e) { e.printStackTrace(); } assertEquals(0,result); } //异常情况测试 @Test(expected = Exception.class) public void mydivide2() throws Exception { cal.divide(3,0); } }