如何使用mockito模拟Hibernate查询

Question

我正在第一次使用Power mockito。 这里是我的代码

@SuppressWarnings("unchecked") 
public List<CurrencyBasedTotalCharges> getCurrencyBasedTotalChargesforCustomerSuperGroupforOperatingAccount(String customerSuperGroupId) 
{ 
    Session session =getSessionFromContext(); 
    String sql = "SELECT ROUND(SUM(qst),2) ||'`'||ROUND(SUM(pst),2)||'`'||ROUND(SUM(gst),2)||'`'||ROUND(SUM(hst),2)||'`'||ROUND(SUM(converted_val),2)||'`'||currency " + 
       "FROM (" + 
          "SELECT CASE WHEN cr.oper_acc_curr is null or cr.oper_acc_curr='NA'" + 
            "THEN cr.charge_account_curr" + 
            "ELSE cr.oper_acc_curr END AS currency," + 
           "nvl ((select case when cr.DR_CR_FLAG='C' then -mcr.value else mcr.value end from mi_charge_record mcr where mcr.original_charge_record_id=cr.reference_id and substr(mcr.charge_code,3,length(mcr.charge_code))='GST'), 0" + 
           " ) AS gst," + 
           "nvl((select case when cr.DR_CR_FLAG='C' then -mcr.value else mcr.value end from mi_charge_record mcr where mcr.original_charge_record_id=cr.reference_id and substr(mcr.charge_code,3,length(mcr.charge_code))='PST'), 0" + 
           " ) AS pst," + 
           "nvl((select case when cr.DR_CR_FLAG='C' then -mcr.value else mcr.value end from mi_charge_record mcr where mcr.original_charge_record_id=cr.reference_id and substr(mcr.charge_code,3,length(mcr.charge_code))='QST'), 0" + 
           " ) AS qst," + 
           "nvl((select case when cr.DR_CR_FLAG='C' then -mcr.value else mcr.value end from mi_charge_record mcr where mcr.original_charge_record_id=cr.reference_id and substr(mcr.charge_code,3,length(mcr.charge_code))='HST'), 0" + 
           " ) AS hst," + 
           "CASE WHEN cr.DR_CR_FLAG='C'" + 
           " THEN (-cr.value) ELSE cr.value END AS converted_val," + 
           "cr.reference_id FROM mi_charge_record cr, mi_bl_billing_preference bp, account acc, customer c," + 
           "mii_customer_group cg"+ 
          "WHERE acc.account_number=cr.account_number AND acc.customer_id=c.customer_id AND c.customer_group_id=cg.id AND cg.customer_super_group_id=:superGroupId AND" + 
            "to_date(cr.BILLED_DATE) BETWEEN to_date(bp.billing_cycle_start_date,'yyyymmdd') AND to_date(bp.billing_cycle_end_date,'yyyymmdd') AND CR.PRODUCT_SHORT_NAME<> 'TAX'" + 
            "AND CR.IS_COST <> 'Y'"+ 
         ") z" + 
       "GROUP BY currency having SUM(ROUND(converted_val,2)) != 0"; 
    List<String> totalchargedetails=session.createSQLQuery(sql).setString("superGroupId", customerSuperGroupId).list(); 
    LinkedHashMap<String, String> paramMap=new LinkedHashMap<>(); 
    paramMap.put(CHARGE_LEVEL, CHARGE_BY_OPERATING_ACCOUNT); 
    paramMap.put(LINKED_ENTITY_GUID, customerSuperGroupId); 
    paramMap.put(STATEMENT_LEVEL, CUSTOMER_SUPER_GROUP_STATEMENT_LEVEL); 
    return getFinalCurrencyBasedTotalCharges(setCurrencyBasedTotalCharges(totalchargedetails),paramMap); 
} 

我想下面使用到的Mockito测试上述功能：

public void getCurrencyBasedTotalChargesforCustomerGroupforOperatingAccountTest() throws Exception 
{ 

    String customerGroupId = "CG-100001-01"; 

    PowerMockito.doReturn(session).when(implStatementDAOImpl, "getSessionFromContext"); 
    Mockito.when(query.setString(anyString(), anyString())).thenReturn(query); 
    Mockito.when(session.createQuery(anyString())).thenReturn(query); 
    Mockito.doReturn(entityObjectBuilder.currencyBasedTotalCharges()).when(query).list(); 

    List<String> totalchargedetails = new ArrayList<String>(); 
    List<CurrencyBasedTotalCharges> test = implStatementDAOImpl.getCurrencyBasedTotalChargesforCustomerGroupforOperatingAccount(customerGroupId); 

    //given(implStatementDAOImpl.getCurrencyBasedTotalChargesforCustomerGroupforOperatingAccount(customerGroupId).t, session)).willReturn(new ArrayList<CurrencyBasedTotalCharges>()); 

    //Assert.assertFalse(test.isEmpty()); 
    Mockito.verify(session).createQuery(anyString()); 
    Mockito.verify(query).setString(anyString(), anyString()); 
    Mockito.verify(query).list(); 
    System.out.println(test); 
} 

我就session.createQuery线获得空指针异常。 Plesae指导我如何嘲笑这一点并进行测试。

谢谢。

Answer 1

会话初始化在哪里？

你可以做初始化如下：

@Mock 
private Session session; 

@Before 
public void setup(){ 
    MockitoAnnotations.initMocks(this); 
} 

重要的是使用注解嘲讽时给init嘲笑/间谍

另一个选项是初始化这样的会议，例如，直接在您的测试方法：

Session session = Mockito.mock(Session.class);