Junit测试实例1
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Junit测试格言两则：1）keep the bar green to keep the code clean！！！2）单元测试不是证明您是对的，而是证明您没有错误！！！  被测试类代码package com.zyg.test.junit3;测试类代码package com.zyg.test.junit3; import junit.framework.Assert; import junit.framework.TestCase; /**  * junit3.8中测试类必须继承Test父类  * @author zyg  */ public class CalculatorTest extends TestCase{     /**      * junit3.8中测试方法需要满足以下原则      * 1.public       * 2.void      * 3.无方法参数      * 4.方法名称必须以test开头      */     public void testAdd(){         Calculator cal = new Calculator();         int result  = cal.add(1, 2);                  //断言          Assert.assertEquals(3,result);     }          public void testMinus(){         Calculator cal = new Calculator();         int result = cal.minus(1, 2);         Assert.assertEquals(-1, result);     }          public void testMultiply(){         Calculator cal = new Calculator();         int result = cal.multiply(2, 3);                  //断言          Assert.assertEquals(6, result);     }          public void testDivide(){         Calculator cal = new Calculator();         int result = 0;         try {             result = cal.divide(6, 4);         } catch (Exception e) {             e.printStackTrace();             Assert.fail();         }                  //断言          Assert.assertEquals(1,result);     }          public void testDivide2(){         Throwable tx = null;         try{             Calculator cal = new Calculator();             cal.divide(4, 0);                          Assert.fail();         }catch(Exception ex){             tx = ex;         }         System.out.println(tx.getMessage());         Assert.assertNotNull(tx);         Assert.assertEquals(Exception.class, tx.getClass());         Assert.assertEquals("除数不能为零！！",tx.getMessage());     } } /**  * 数学计算  *   * @author zyg  *   */ public class Calculator {     public int add(int a, int b) {         return a + b;     }     public int minus(int a, int b) {         return a - b;     }     public int multiply(int a, int b) {         return a * b;     }     public int divide(int a, int b) throws Exception{         if(0 == b){             throw new Exception("除数不能为零！！");         }         return a / b;     } }