嘲笑一個有一些由隨機值生成的字段的類？

Question

我想知道如何使這個測試工作！以下是測試方法：正如您所看到的，correlationId和docFamilyUUid是由UUID類隨機生成的。基本上，getDocInfo首先調用mockDao上的findAllByDocId，如果返回null，它將創建一個要保存到數據庫的docInfo對象。

void testGetDocInfo() 
    { 
     def String docId = 'I19292800fe1911e0a849005056932b99' 
     def List<DocInfo> expectedResult = [expectedDocInfo] 
     expect(mockDocInfoDao.findAllByDocId(docId)).andReturn(null) 
     mockDocInfoDao.save(new DocInfo()) 
     replay(mockDocInfoDao) 
     docInfoServiceImpl.getDocInfo(docId) 
     verify(mockDocInfoDao) 
    } 

///////// DocInfoServiceClass

public final DocInfo createDocInfo(final String docId) 
    { 
     final DocInfo docInfo = new DocInfo(); 
     docInfo.setId(docId); 
     docInfo.setDocFamilyUuid(UUIDGenerator.getInstance().getUuidAsString()); 
     docInfo.setCorrelationId(UUIDGenerator.getInstance().getUuidAsString()); 
     return docInfo; 
    } 
    /** 
    * @param docId is the document Id 
    * @return the list of DocInfo objects for a particular docId 
    */ 
    public final List<DocInfo> findAllByDocId(final String docId) 
    { 
     return docInfoDao.findAllByDocId(docId); 
    } 

    /** 
    * @param docId is the document Id 
    * @return the list of DocInfo objects for a particular docId 
    */ 
    public final List<DocInfo> getDocInfo(final String docId) 
    { 
     List<DocInfo> docInfoList = null; 
     docInfoList = docInfoDao.findAllByDocId(docId); 
     if (docInfoList == null) 
     { 
      docInfoList = new ArrayList<DocInfo>(); 
      DocInfo docInfo = createDocInfo(docId); 
      docInfoDao.save(docInfo); 
      docInfoList.add(docInfo); 
     } 

     return docInfoList; 
    } 

Answer 1

你應該使用部分誚模擬出只createDocInfo方法。這樣，您可以從那裏返回任何您想要的內容，特別是具有您選擇的ID的DocInfo實例。 通過這種方式，您可以對getDocInfo的行爲進行必要的斷言（例如，確保具有相同ID的實例被傳遞以保存並添加）。

你可以閱讀關於部分嘲諷here。 你沒有說明你正在使用EasyMock的版本，所以我認爲它不太舊。