Mock Casting of jcr Session to Jackrabbit Session - (JackrabbitSession) session | Community
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indrajithp11346
Level 2
November 11, 2019

Mock Casting of jcr Session to Jackrabbit Session - (JackrabbitSession) session

  • November 11, 2019
  • 6 replies
  • 5746 views

Hi All,

I am trying to write a junit test case and i am unable to mock the casting of jcr session to Jackrabbit session.

Here is my Code :

resolver = request.getResourceResolver();

session = resolver.adaptTo(Session.class);

jcrSession = (JackrabbitSession) session;

Below is my Junit :

     @Mock

    Session session;

     @Mock

    ResourceResolver resolver;

    @Mock

    JackrabbitSession jcrSession;

PowerMockito.when(request.getResourceResolver()).thenReturn(resolver);

PowerMockito.when(resolver.adaptTo(Session.class)).thenReturn(session);

PowerMockito.when((JackrabbitSession) session).thenReturn(jcrSession); // i am getting error at this point

when i am trying to do this, i am getting "java.lang.ClassCastException"

Below is the error:

java.lang.ClassCastException: $javax.jcr.Session$$EnhancerByMockitoWithCGLIB$$b9cd1700 cannot be cast to org.apache.jackrabbit.api.JackrabbitSession

I have mocked my session and resolver objects but still i am getting the error.

Please help me in Mocking this for my junit test.

Thanks & Regards,

Indrajith

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    6 replies

    ArpitVarshney
    Community Advisor
    ArpitVarshneyCommunity Advisor
    Community Advisor
    November 12, 2019

    Hi indrajithp11346880 ,

    This is a very common error.Please see the below threads:

    https://stackoverflow.com/questions/32628863/mocking-type-casting-objects

    https://stackoverflow.com/questions/28462611/mockito-classcastexception-a-mock-cannot-be-cast

    Regards,

    Arpit Varshney

      joerghoh
      Adobe Employee
      joerghohAdobe Employee
      Adobe Employee
      November 12, 2019

      Hi,

      may I ask why do you need to have that cast at all? There should not be any need to do it.

      Jörg

        I
        indrajithp11346Author
        Level 2
        November 13, 2019

        Hi,

        I need to make some changes with the users in aem so i need the jackrabbit session which i need to get it from jcrSession session that why i need to cast it and the code is working fine but while writing my test case mocking that is cast is not working.

        Thanks & Regards,

        Indrajith

          I
          indrajithp11346Author
          Level 2
          November 13, 2019

          Hi,

          I have tried this and it is not working. I am also doing the similar implementation.

          I have mocked both the jcrSession and Jackrabbit session.

          can you please elaborate the below discussion little, i am not getting what he is trying to tell.

          https://stackoverflow.com/questions/28462611/mockito-classcastexception-a-mock-cannot-be-c ast

            joerghoh
            Adobe Employee
            joerghohAdobe Employee
            Adobe Employee
            November 13, 2019

            I would refactor the code in a way, that the cast to the JackrabbitSession plus all dependent functionality is separated in a dedicated method, and then stub this method with Mockito completely.

            (Also I would recommend to use SlingContext, so you don't need to mock resources and nodes. See [1] for a sample.)

            [1] https://cqdump.wordpress.com/2019/01/17/writing-unittests-for-aem-part-3-mocking-resources/

              Uppari_Ramesh
              Uppari_Ramesh
              Level 5
              May 8, 2023

              Hi @indrajithp11346 ,

               

              You can try like below

               

              when --> resolver.adaptTo(Session.class)).thenReturn(jackrabbitSession object) . @Mock JackrabbitSession jackrabbitSession ; and return jackrabbitSession object in thenReturn method.

               

              If you try above you won't get cast exception

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