<rt id="bn8ez"></rt>
<label id="bn8ez"></label>

  • <span id="bn8ez"></span>

    <label id="bn8ez"><meter id="bn8ez"></meter></label>

    隨筆 - 41  文章 - 29  trackbacks - 0
    <2009年4月>
    2930311234
    567891011
    12131415161718
    19202122232425
    262728293012
    3456789

    常用鏈接

    留言簿(5)

    隨筆分類(28)

    隨筆檔案(23)

    收藏夾(6)

    Inside JVM

    Java

    java performance

    Solr

    搜索

    •  

    最新評論

    閱讀排行榜

    評論排行榜

    Currently, the major approach for java unit test are built on two major components –

    • Junit – The unit test framework
    • EasyMock and EasyMock Extension – Which are used to build mock test

    What’s problem on Mock Test? It costs a lot time on preparation

    Mock test is a very good way to test unit of codes. I still prefer mock test as the major approach of unit test. However, mock test has its own problem.

    The major steps on Mock Test is –

    1. Assume we are going to test “Output ServiceA.MethodA(Input input)”, firstly, get an instance of ServiceA
    2. Create an Input for methodA, which generally need new an object and invoke many setter methods to set the values
    3. If this method will call ServiceB.MethodB, we need create a mock object for ServiceB, and create an ArugmentMather for methodB to match the arguments, and create a return object for methodB
    4. Then we invoke ServiceA.MethodA and internally ServiceA.MethodA will invoke ServiceB.MethodB, and finally, we get the Output object
    5. At the last step, we will assert the Output object.

    In order to test ServiceA.MethodA, we did lots of things, and most of things are very time-consuming activities, such as

    • creating Input object,
    • creating Mock service,
    • creating ArgumentMacher for mock method, and
    • creating return object for mock method
    • And assert Output object

    What’s my expectation?

    • creating Input object – Can it be created automatically?
    • creating Mock service – Can it be created automatically?
    • creating ArgumentMacher for mock method, and – Can we NOT need create a new class for it?
    • creating return object for mock method – Can it be created automatically?
    • And assert Output object – Instead of equals() method, can we compare two object by values?

    How can Unitils help us?

    Unitils is an open source library aimed at making unit testing easy and maintainable. Unitils builds further on existing libraries like dbunit and integrates with JUnit and TestNG .

    Unitils provides general asserion utilities, support for database testing, support for testing with mock objects and offers integration with Spring , Hibernate and the Java Persistence API (JPA).

    • General testing utilities
      Equality assertion through reflection, with different options like ignoring Java default/null values and ignoring order of collections
    • EasyMock integration support
      • Simplify EasyMock mock object creation
      • Simplify mock object injection
      • EasyMock argument matching using reflection equality

    Back to our problem –

    • Can we initialize a Input or Mock Method Returned Object automatically? In other words, creating an instance of a specific class, and fill all attributes by random values. Unfortunately, Unitils doesn’t have direct support on it. But i’ve created a simple util to initialize an bean based on Unitils.
    1 //for BeanInitializer.initializeSimpleBean,  it is an simple tool to initialize a bean by random values. I didn't find a good tool for it, so, i write a simple one.
    2 LogStatisticRawDataInput input = (LogStatisticRawDataInput) BeanInitializer.initializeSimpleBean(LogStatisticRawDataInput.class);
    • Can a mock object be created automatically? Yes, Unitils provides an annotation ”@ReguarMock” to support it
       1 public class SearchStatisticServiceImplTest extends com.starcite.commonsearch.test.Test {
       2 
       3     
       4 
       5     @RegularMock
       6 
       7     private StatisticAccess mockAccess; //just it
       8 
       9     
      10 
      11     private SearchStatisticService statisticService;
      12 
      13     
      14 
      15     @Before
      16 
      17     public void setUp() {
      18 
      19     statisticService = new SearchStatisticServiceImpl();
      20 
      21     ((SearchStatisticServiceImpl)statisticService).setStatisticAccess(mockAccess);
      22 
      23     }
      24 
      25     
      26 
      27     }
    • Can we compare the expected object and the real object by contents? Of course, no need write the equals by yourself. Yes, Unitils provides “Equality assertion through reflection, with different options like ignoring Java default/null values and ignoring order of collections”
      1     Map<String, Integer> expectedKeywordFreqMap = new HashMap<String, Integer>();
      2 
      3     Map<String, Integer> keywordFreqMap = output.getKeywordFreqMap();
      4     ReflectionAssert.assertReflectionEquals(expectedKeywordFreqMap, keywordFreqMap); //that's it
    • Can we create AugmentMatcher easier? Yes, Unitils provides “EasyMock argument matching using reflection equality”.
       1 //parameter matcher
       2 
       3     StatRawDataImpl rawData = new StatRawDataImpl();
       4 
       5     rawData.setKeyword(input.getKeyword());
       6 
       7     rawData.setLocation(input.getLocation());
       8 
       9     rawData.setAccountID(input.getUserID());
      10 
      11     rawData.setCreatedDate(new Date());
      12 
      13     rawData.setSiteID(input.getSiteID());
      14 
      15     rawData.setUniqueID(input.getSearchID());
      16 
      17 
      18     List<statsearchrank> searchRankList = new ArrayList</statsearchrank><statsearchrank>(); 
      19 
      20     for (int i = 0; i &lt; SEARCH_RESULT_SIZE; i++) {
      21 
      22            Long externalVendorID = searchResults.get(i);
      23 
      24            StatSearchRank rank = new StatSearchRankImpl();
      25 
      26            rank.setRank((input.getPageNum() - 1* //current page number
      27 
      28                               (input.getKeywordLocationPreferredSize() + input.getPageSize()) //total page size
      29 
      30                                                       + i + 1);
      31 
      32             rank.setExternalVendorID(externalVendorID);
      33 
      34             searchRankList.add(rank);
      35 
      36     }
      37 
      38     mockAccess.logStatisticRawData(
      39 
      40                 EasyMockUnitils.refEq(rawData, ReflectionComparatorMode.LENIENT_DATES), //that's it, no need argument matcher
      41 
      42                 EasyMockUnitils.refEq(searchRankList));
      43 
      44     EasyMock.expectLastCall().once();
      45 
      46     EasyMockUnitils.replay();
      47

    Overall, Unitils  is a pretty good tool to simplify unit test codes. Here  we only mentioned Mock test, actually, Unitils can also simplify DB test/Spring Test etc. We will explore these futures later.
    posted on 2009-03-30 22:30 Justin Chen 閱讀(2022) 評論(1)  編輯  收藏 所屬分類: Unit Test & Mock Test

    FeedBack:
    # re: [絕對原創] Use Unitils To Simplify Mock Test  2009-04-13 21:30 Justin Chen
    Today, i took a look at another mock framework - JMockit (https://jmockit.dev.java.net/). The creator of JMockit claims "JMockit Core consists of a single class with a small set of static methods, which allow arbitrary methods and constructors of any other class to be replaced with mock implementations at runtime. "

    It overcomes two limits comparing to EasyMock,
    (1) mocked classes can't simply be instantiated with the new operator in client or test code.
    (2) the classes to be mocked cannot be final

    However, JMockit has its own limitation: the argument matcher provided by JMockit is not easy to use comparing to Unitils.  回復  更多評論
      
    主站蜘蛛池模板: 亚洲精品无码久久久影院相关影片| 亚洲麻豆精品果冻传媒| 亚洲综合成人婷婷五月网址| 成年免费a级毛片免费看无码| 成年男女免费视频网站| 亚洲VA中文字幕无码毛片| 国产精品亚洲一区二区无码| 久久精品免费一区二区| 亚洲精品国产精品乱码在线观看| 看免费毛片天天看| 午夜宅男在线永久免费观看网| 亚洲AV成人一区二区三区AV| 色吊丝性永久免费看码| 日本大片在线看黄a∨免费| 亚洲区视频在线观看| 午夜网站在线观看免费完整高清观看 | 久久精品国产精品亚洲精品| 国产天堂亚洲国产碰碰| 久久久久久久久免费看无码| 亚洲福利视频网站| 无码日韩精品一区二区免费暖暖| 亚洲日本一区二区三区在线不卡| 亚洲成在人线aⅴ免费毛片| 免费观看AV片在线播放| 亚洲色图古典武侠| 少妇无码一区二区三区免费| 日韩一卡2卡3卡4卡新区亚洲| 免费激情网站国产高清第一页| 免费被黄网站在观看| 亚洲综合无码无在线观看| 很黄很黄的网站免费的| 91亚洲导航深夜福利| 亚洲电影免费在线观看| 亚洲av无码无在线观看红杏| 成人免费一区二区三区| 久久久久亚洲av成人无码电影| 无码 免费 国产在线观看91| 国产hs免费高清在线观看| 爱情岛论坛亚洲品质自拍视频网站| 国产免费av片在线看| 亚洲一线产品二线产品|