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Mario248
Mario248
Level 7
June 7, 2023

Unable to load JSON file using AEMContext for AEM Sling Model

  • June 7, 2023
  • 2 replies
  • 4484 views

I am trying to create a JUNIT for my sling model class. I am following - https://experienceleague.adobe.com/docs/experience-manager-learn/getting-started-wknd-tutorial-develop/project-archetype/unit-testing.html?lang=en. As per this doc I am using AemContext to load the json file but I get Null when I try to read values.

 

JUNIT

 

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import com.techcombank.core.constants.TestConstants;
import com.techcombank.core.testcontext.AppAemContext;
import io.wcm.testing.mock.aem.junit5.AemContext;
import io.wcm.testing.mock.aem.junit5.AemContextExtension;
import org.apache.sling.api.resource.Resource;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.junit.jupiter.MockitoExtension;
import com.day.cq.wcm.api.WCMMode;

import java.util.List;

import static org.junit.jupiter.api.Assertions.*;

@ExtendWith({ AemContextExtension.class, MockitoExtension.class })

public class FeatureListModelTest  {

    private final AemContext ctx = AppAemContext.newAemContext();
   
    FeatureListModel featureModel;
   

    @BeforeEach
    void setUp() throws Exception {

        ctx.load().json("/content/mysite/en/featurelist.json", "/content");
        ctx.addModelsForClasses(FeatureListModel.class);
        featureModel = getModel("/content/jcr:content/root/feature");
    }
   
     @Test
        void getFeaturePath() {
            final String expected = "/content/dam/mysite/logo.jpg";
            assertEquals(expected, featureModel.getFeaturePath());
        }
     
     private FeatureListModel getModel(String currentResource) {
            ctx.request().setAttribute(WCMMode.class.getName(), WCMMode.EDIT);
            ctx.currentResource(currentResource);
            FeatureListModel fm = ctx.currentResource().adaptTo(FeatureListModel.class);
            return fm;
        }
}

Here is my json that is placed in resource path

 

{
    "featureList": {
        "jcr:primaryType": "cq:PageContent",
        "jcr:createdBy": "admin",
        "jcr:title": "feature",
        "jcr:created": "Tue Jun 01 2023 21:26:54 GMT+0530",
        "changeFrequency": "always",
        "cq:lastModified": "Tue Jun 06 2023 22:28:27 GMT+0530",
        "featureTitle": "Hello",
        "sling:resourceType": "mywebsite/components/structure/base-page",
        "cq:lastModifiedBy": "admin"
    }
}

 

It seems everything correct but I am not sure why I am getting Null value in modelobject.

 
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2 replies

P
ParakhMa
Level 3
June 7, 2023

Three Things :

1. private final AemContext aemContext = new AemContext();

2. This is incorrect : 

 aemContext.addModelsForClasses(FeatureListModelTest.class);

Correct Syntax : 

 aemContext.addModelsForClasses(FeatureListModel.class);

Where FeatureListModel, is the class you are trying to write Junit for .

3, Incorrect :

featureModel = aemContext.request().adaptTo(FeatureListModelTest.class);

 Correct Syntax :

featureModel = aemContext.request().adaptTo(FeatureListModel.class);
    Mario248
    Mario248Author
    Level 7
    June 7, 2023

    Sorry, I changed for debugging purpose. Now I  changed the actual model class but I still I get the NULL on featureModel object.

      P
      ParakhMa
      Level 3
      June 7, 2023

      Did you update at both places ?

      Can you post the updated code now.

       

      Also I believe the path to your resource file is incorrect

       aemContext.load().json("/content/mywebsite/en/featurelist.json", "/featurelistComponent");

      "/content/mywebsite/en/featurelist.json"  --> doesnt look like resource path where your json might be placed.

        Sady_Rifat
        Community Advisor
        Sady_RifatCommunity Advisor
        Community Advisor
        June 7, 2023

        Hello @mario248 ,
        Is your FeatureListModel using any core Model Class? I mean are you using a sling delegation pattern? 

          Mario248
          Mario248Author
          Level 7
          June 7, 2023

          yes, here is my FeatureListModel class

           

          @Model(adaptables = Resource.class, defaultInjectionStrategy = DefaultInjectionStrategy.OPTIONAL, adapters = FeatureListModel .class)

          public class FeatureListModel {
          ..

          }

            Sady_Rifat
            Community Advisor
            Sady_RifatCommunity Advisor
            Community Advisor
            June 7, 2023

            Hello @mario248 ,
            Have you tried with. 

            aemContext.currentResource().adaptTo(FeatureListModel.class);

            instead of aemContext.request()?

             

            If so, or still it's the null then the problem should be in your Json Resource. You need to provide the correct Json on that case based on your annotation.
            Also, mention if you inject any Service into your model class. If so initialize those using @Mock in your test class.

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