junit - PowerMock mock static not able to mock a class

Question

I have a test case which uses power mock to run. Below is the code

ParamControllerTest.java

    @RunWith(PowerMockRunner.class)
    @PrepareForTest(XYZ.class)
    public class ParamControllerTest{
    
    private HttpServletRequest request;
    private ParamController paramController;
    private ParamVO2 paramVO2;
    private String userId = "123456";
    private String access = "re";
    
    @Mock
    private XYZdaoMock xYZdaoMock;
    
    @Test
        public void testAddSecty(){
            request = PowerMockito.mock(HttpServletRequest.class);
// You do get request value as HttpServletRequest
            PowerMockito.mockStatic(XYZ.class);
            when(XYZ.getId(request)).thenReturn(id);
            when(XYZ.getAccess(userId, "bcd")).thenReturn("re");
            when(XYZ.getId(request)).thenReturn("123456");
            when(xYZdaoMock.updateKey(paramVO2)).thenReturn(paramVO2);
            paramController.addParam(paramVO2);
            verify(xYZdaoMock).updateKey(paramVO2); 
            
        }
    }

ParamController.java

@Controller
@RequestMapping(value="/param")
@Transactional(propagation=Propagation.REQUIRED,rollbackFor = Exception.class)
public class ParamController {
    
@RequestMapping(value="/abc", method = RequestMethod.POST)
    public @ResponseBody ParamVO addParam(@RequestBody ParamVO paramVO){
        ParamVO paramVO = null;
        String userId = XYZ.getId(request);
// userId result null as request is null and due to which after this it result in NullPointerException
        // Code
        return paramVO;             
        
    }
}

Considering the null pointer getting on userId in controller, PowerMockito.mockStatic(XYZ.class) i think this is giving error. I read about this and apparently this does not work with proper version of mockito and power mockito. I tried commenting out the mockito dependency in pom so that it does not conflict with version of power mockito, but it did not work. Below are the version that i have tried of power mockito but none of them worked. Spring version used is 4.3.19. Power Mockito version tried is 1.4.12 which gives Intialization error of XYZ.class while running the test case and 1.7.3 and the result is NullPointerException as shown above.

pom.xml

    <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.13</version>
                <scope>test</scope>
            </dependency>
            <!-- <dependency>
                <groupId>org.mockito</groupId>
                <artifactId>mockito-all</artifactId>
                <version>1.10.19</version>
                <scope>test</scope>
            </dependency> -->
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-module-junit4</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-module-junit4-rule</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-classloading-xstream</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-api-mockito</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-module-junit4-legacy</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.powermock</groupId>
                <artifactId>powermock-api-easymock</artifactId>
                <version>1.7.3</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.easymock</groupId>
                <artifactId>easymock</artifactId>
                <version>3.0</version>
                <scope>test</scope>
            </dependency>
<!-- <dependency>
            <groupId>org.javassist</groupId>
            <artifactId>javassist</artifactId>
            <version>3.20.0.GA</version>
        </dependency> -->

Error Trace

java.lang.NullPointerException
    at com.Value(ParamController.java:184)
    at com..testAddSecty(ParamControllerTest.java:218)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.internal.runners.TestMethod.invoke(TestMethod.java:68)
    at org.powermock.modules.junit4.internal.impl.PowerMockJUnit44RunnerDelegateImpl$PowerMockJUnit44MethodRunner.runTestMethod(PowerMockJUnit44RunnerDelegateImpl.java:326)

Any help how to fix this.

question from:https://stackoverflow.com/questions/65915284/powermock-mock-static-not-able-to-mock-a-class

Answer 1

Waitting for answers