MockitoTestContext 父类：

package com.chinacache.portal;
import java.util.Locale;
import org.junit.BeforeClass;
import org.mockito.MockitoAnnotations;
import org.springframework.mock.web.MockHttpServletRequest;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import com.chinacache.portal.web.util.SessionUtil;
import com.opensymphony.xwork2.util.LocalizedTextUtil;
/**
* Mockito 测试环境。继承该类后，Mockito 的相关注解 (@Mock， @InjectMocks， ...) 能生效
*/
public class MockitoTestContext {
public MockitoTestContext() {
MockitoAnnotations.initMocks(this);
}
}
BillingBusinessManager 源码：
package com.chinacache.portal.service.billing;
//引入包忽略...
/**
* 计费业务相关的业务方法
*/
@Transactional
public class BillingBusinessManager {
private static final Log log = LogFactory.getLog(BillingBusinessManager.class);
@Autowired
private UserDAO userDAO;
@Autowired
private BillingBusinessDAO billingBusinessDAO;
@Autowired
private BillingBusinessSubscriptionDAO billingBusinessSubscriptionDAO;
@Autowired
private BillingBusinessSubscriptionDetailDAO billingBusinessSubscriptionDetailDAO;
@Autowired
private BillingRegionSubscriptionDAO billingRegionSubscriptionDAO;
@Autowired
private BillingRegionDAO billingRegionDAO;
@Autowired
private ContractTimeManager contractTimeManager;
/**
* 根据id查询业务信息
* @return 如果参数为空或者查询不到数据，返回空列表
* O 中的中、英文业务名来自 BILLING_BUSINESS 表
*/
public List getBusinessesByIds(List businessIds) {         return billingBusinessDAO.getBusinessbyIds(businessIds); } }
BillingBusinessManagerUnitTest类：
//引入包忽略...
public class BillingBusinessManagerUnitTest extends MockitoTestContext {
@InjectMocks
private BillingBusinessManager sv;
@Mock
private BillingBusinessDAO billingBusinessDAO;
@Test
public void testGetBusinessesByIds() {
List<BusinessVO> expected = ListUtil.toList(new BusinessVO(1l， "a"， "b"));
//简洁的语法如下所示
when(billingBusinessDAO.getBusinessbyIds(anyListOf(Long.class))).thenReturn(expected);
List<Long> businessIds = ListUtil.toList(TestConstants.BUSINESS_ID_HTTP_WEB_CACHE);
List<BusinessVO> actual = sv.getBusinessesByIds(businessIds);
Assert.assertEquals(expected， actual);
}
}
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