unable to cover junit for Postconstruct method

[arjunsudhas1995]

Hi Team,

I am trying to create junit for the following postconstruct:

 @PostConstruct

    protected void init() {

        validate();

        if (isValid()) {

            prepareActionsList();

            if(isBlank(type) && isNotBlank(theme)) {

                type= theme.equals("cmp-section-container") ? "full" : "half";

            }

        }

    }

    private void prepareActionsList() {

        if (null != actionsList) {

            actionsList = actionsList.stream().filter(LinkModel::isValid).collect(Collectors.toList());

        }

    }

Here is the junit case trying to address the same:

package com.aem.core.models;

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

import static org.mockito.ArgumentMatchers.any;

import static org.mockito.ArgumentMatchers.eq;

import static org.mockito.Mockito.lenient;

import java.util.List;

import org.apache.sling.api.resource.Resource;

import org.apache.sling.models.factory.ModelFactory;

import org.apache.sling.testing.mock.sling.servlet.MockSlingHttpServletRequest;

import org.junit.jupiter.api.BeforeEach;

import org.junit.jupiter.api.Test;

import org.junit.jupiter.api.extension.ExtendWith;

import org.mockito.Mock;

import org.mockito.junit.jupiter.MockitoExtension;

import io.wcm.testing.mock.aem.junit5.AemContext;

import io.wcm.testing.mock.aem.junit5.AemContextExtension;

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

public class TextWithCtaModelTest {

    final AemContext ctx = new AemContext();

    @Mock

    private ModelFactory modelFactory;

    @Mock

    private List<LinkModel> actionsList;

    // TextWithCtaModel textWithCtaModel;

    @BeforeEach

    void setUp() throws Exception {

        ctx.addModelsForClasses(TextWithCtaModel.class);

        ctx.load().json("/com/firstdata/aem/core/models/TextWithCtaModelTest.json", "/content");

        lenient().when(modelFactory.getModelFromWrappedRequest(eq(ctx.request()), any(Resource.class), eq(List.class)))

                .thenReturn(actionsList);

    }

    @Test

    void testGetContentView() {

        Resource myResource = ctx.resourceResolver().getResource("/content/textwithcta");

        TextWithCtaModel textWithCtaModel = ctx.getService(ModelFactory.class).createModel(myResource,

                TextWithCtaModel.class);

        final String expected = "Testing Content";

        final String actual = textWithCtaModel.getContentView();

        assertEquals(expected, actual);

    }

    @Test

    void testValidate() {

    }

}

but it is failing with the following error:

org.apache.sling.models.factory.PostConstructException: Post-construct method has thrown an exception for model class core.models.TextWithCtaModel
at org.apache.sling.models.impl.ModelAdapterFactory.createObject(ModelAdapterFactory.java:549)
at org.apache.sling.models.impl.ModelAdapterFactory.internalCreateModel(ModelAdapterFactory.java:306)
at org.apache.sling.models.impl.ModelAdapterFactory.createModel(ModelAdapterFactory.java:200)
at com.aem.core.models.TextWithCtaModelTest.testGetContentView(TextWithCtaModelTest.java:44)
at java.util.ArrayList.forEach(ArrayList.java:1257)
at java.util.ArrayList.forEach(ArrayList.java:1257)
Caused by: java.lang.NoSuchMethodError: org.apache.commons.lang3.StringUtils.isAllBlank([Ljava/lang/CharSequence;)Z
at .aem.core.models.TextWithCtaModel.validate(TextWithCtaModel.java:27)
at em.core.models.ContentSectionModel.init(ContentSectionModel.java:73)
at org.apache.sling.models.impl.ModelAdapterFactory.invokePostConstruct(ModelAdapterFactory.java:734)
at org.apache.sling.models.impl.ModelAdapterFactory.createObject

[VeenaK · Accepted solution]

Refer the below article explains the JUNIT writing for a model class.

https://sourcedcode.com/blog/aem/aem-sling-models-unit-test-junit-4-with-examples