单元测试——如何用java编写相同场景的正面和负面测试用例

Question

我想写两个测试用例，无论是积极的场景还是消极的场景。

我的示例代码是，

    /**
     * 
     */
    public void testgetAsnAccuracyInstanceType() throws Exception
    {
        String METHOD_NAME = "testgetAsnAccuracyInstanceType";
        log.entering(CLASS_NAME, METHOD_NAME);
         //Rating Element "1" ASN Accuracy
         populateForTestMethodValues("1");
         populateWeekOfList();
         List<WeeklyDeliveryInstanceTypeQO> asnAccuracyInstanceTypeList = weeklyDlvyInstancesDashboardReportForm.getAsnAccuracyInstanceType();
         assertTrue("testgetASNAccuracyRatingElement is Not Empty: ", asnAccuracyInstanceTypeList.size() > 0);
         log.exiting(CLASS_NAME, METHOD_NAME);
    }

Answer 1

这个怎么样?

// use input data you expect results for
assertFalse("testgetASNAccuracyRatingElement is empty", 
    asnAccuracyInstanceTypeList.isEmpty());

断言否定情况:

// use input data you don't expect results for
assertTrue("testgetASNAccuracyRatingElement is not empty", 
    asnAccuracyInstanceTypeList.isEmpty());

Answer 2

这一行

assertTrue("testgetASNAccuracyRatingElement is Not Empty: ", 
           asnAccuracyInstanceTypeList.size() > 0);

严格等价于:

assertFalse("testgetASNAccuracyRatingElement is Not Empty: ", 
           asnAccuracyInstanceTypeList.isEmpty());

(如果你问的是这个)

Answer 3

输入/测试数据决定测试用例是正用例还是负用例。

所以只有两个测试方法(一个用于阳性，另一个用于阴性)，并分别使用阳性和阴性数据调用。