不能使用powermock子类化final类

时间:2017-04-27 06:16:48

标签: java junit mockito powermock powermockito

我有一个" final" class,我需要测试私有方法, 尝试以下方式获取失败案例(Exception)但得到错误

  

[junit]引起:IllegalArgumentException:无法子类化   最后的班级

如何解决此错误,任何人都可以建议

//final class
public final Class Test {

  //private constructor
  private Test(Events event) {
     //initialization
  }

  private JSONObject getReg() {
    return new JSONObject;
  }

  private State Updation(String macAddr) {
    try {
      return update(getReg(), PATH, macAddr);
    } catch (Exception e) {
      throw new JSONException(e);
    } 
  }

 }


 @PrepareForTest({Test.class})
 @RunWith(PowerMockRunner.class)
 public class TestClassTest {

 @Test(expected = Exception.class)
 public void UpdationInvalidTest() throws Exception {
   JSONObject jsonObj = new JSONObject();

   Test test = Whitebox.invokeConstructor(Test.class, event);

   Test testSpy = PowerMockito.spy(test);
   PowerMockito.doReturn(jsonObj).when(testSpy, "getReg");

   Whitebox.invokeMethod(test, "Updation", "00:00:00:00:00:00");
 }
}

2 个答案:

答案 0 :(得分:3)

正如@Ivan所说,你应该嘲笑最后一堂课。你可以这样做:

@RunWith(PowerMockRunner.class)
@PrepareForTest(Test.class)
public class TestClassTest {   

    @Mock
    private Test test;

    @Test(expected = Exception.class)
    public void UpdationInvalidTest() throws Exception {
       JSONObject jsonObj = new JSONObject().put("status", 123)
                                            .put("update-time", 123);

       Mockito.when(test.getReg()).thenReturn(jsonObj);

    }
}

答案 1 :(得分:0)

尝试在最终课程中创建间谍时遇到错误。您应该使用另一种方法来实现此目的 - 使用此处所述的模拟:https://github.com/powermock/powermock/wiki/MockFinal