spring结合mockito

mockito可模拟依赖对象的行为，从而简化跨类的测试。

maven获取mockito：

<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-all</artifactId>
<version>1.10.19</version>
</dependency>

以下例：

被测类：ConnInfoService

依赖类：ConnInfoAccessor

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = "/conf/test-context.xml")
public class ConnInfoServiceTest {

@Autowired
@InjectMocks
private ConnInfoService connInfoService;

@Mock
private ConnInfoAccessor connInfoAccessor;

@Before
public void before() throws Exception {
MockitoAnnotations.initMocks(this);
}

/**
* Method: getConnInfo(String connId)
*/
@Test
public void testGetConnInfo() throws Exception {
GPSConnInfo gpsConnInfo = new GPSConnInfo();
gpsConnInfo.setAppKey("appKey");
gpsConnInfo.setGpsNodeId("node1");
when(connInfoAccessor.getConnInfo("connId")).thenReturn(gpsConnInfo);
Assert.assertEquals(gpsConnInfo, connInfoService.getConnInfo("connId"));
}

/**
* Method: saveConnInfo(String connId, GPSConnInfo gpsConnInfo)
*/
@Test(expected = GPSServiceException.class)
public void testSaveConnInfo() throws Exception {
GPSConnInfo gpsConnInfo = new GPSConnInfo();
gpsConnInfo.setAppKey("appKey");
gpsConnInfo.setGpsNodeId("node1");
doThrow(new DataAccessException("e") {
@Override
public String getMessage() {
return super.getMessage();
}
}).when(connInfoAccessor).saveConnInfo("connId", gpsConnInfo);
connInfoService.saveConnInfo("connId", gpsConnInfo);
}

@InjectMocks用于标识被测对象，从而把由@mock表示的依赖对象自动注入到被测对象中

@Mock用于表示依赖对象

MockitoAnnotations.initMocks(this);用于初始化以上注入动作

when(connInfoAccessor.getConnInfo("connId")).thenReturn(gpsConnInfo)

用于模拟带返回值的getConnInfo方法的处理

doThrow(new DataAccessException("e") {

@Override

public String getMessage() {

return super.getMessage();

}

}).when(connInfoAccessor).saveConnInfo("connId", gpsConnInfo);

用于模拟无返回值的saveConnInfo方法抛出异常的行为