JUnit Test Cases for Sling Models based on Delegation Pattern

Hi,

You need to use one more adaptable to adapt Teaser Component 

e.g.

@Model(adaptables = SlingHttpServletRequest.class, adapters = {Teaser.class, CustomTeaser.class}, resourceType = TeaserImpl.RESOURCE_TYPE)

Use CustomeTaeser to adapt to Junit test cases.

It will not cover 100% coverage but you will be able to write test cases for custom functionality.

have you registered the Sling model for the core teaser component as well to the context?

Jörg

Thank you so much!

I have the same issue. I needed to declare the delegate proxy core component (Page in my case) as optional in my sling model as it is not resolved in the unit test (should not be optional in the real use case). Is a pity because my custom logic is simply a fallback of the core component one. I would like to have the object not null in my unit test so I will drop the Optional annotation for the field.

Anyway, next to the working solution this seems to be a short-coming of the mocking libraries. Can you create a minimal testcase (at best without any AEM dependency) and post it to the sling-developer list?

I managed to get a mock instance to be injected when adapting the commerce product model without using the "DefaultInjectionStrategy.OPTIONAL" solution.

I've just wrapped a mock to avoid all of the inject errors of the core model but it did try to do it with the original resource super type.

package com.custom.aem.core.models.commerce.impl;

import com.adobe.cq.commerce.core.components.models.common.Price;
import com.adobe.cq.commerce.core.components.models.product.Asset;
import com.adobe.cq.commerce.core.components.models.product.GroupItem;
import com.adobe.cq.commerce.core.components.models.product.Variant;
import com.adobe.cq.commerce.core.components.models.product.VariantAttribute;
import com.adobe.cq.commerce.core.components.models.retriever.AbstractProductRetriever;
import com.adobe.cq.commerce.core.components.storefrontcontext.ProductStorefrontContext;
import com.custom.aem.core.models.commerce.Product;
import io.wcm.testing.mock.aem.junit5.AemContext;
import io.wcm.testing.mock.aem.junit5.AemContextExtension;
import junitx.util.PrivateAccessor;
import org.apache.sling.api.SlingHttpServletRequest;
import org.apache.sling.models.annotations.Model;
import org.apache.sling.models.factory.ModelFactory;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mockito;

import java.util.List;

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

/**
 * Simple JUnit test verifying the HelloWorldModel
 */
@ExtendWith(AemContextExtension.class)
class ProductImplTest2 {
    private Product model;
    private ModelFactory modelFactory;

    private com.adobe.cq.commerce.core.components.models.product.Product delegateProductMock;
    private AbstractProductRetriever productRetriever;

    @BeforeEach
    public void setup(final AemContext context) throws Exception {
        context.addModelsForClasses(
                ProductImpl.class,
                Product.class,
                DelegateProductModel.class,
                com.adobe.cq.commerce.core.components.models.product.Product.class
        );

        context.build()
                .resource("/content/custom-aem/us/en/products/product-page/product", "sling:resourceType", "custom-aem/components/commerce/product")
                .resource("/apps/custom-aem/components/commerce/product", "sling:resourceSuperType", "core/cif/components/commerce/product/v1/productMock")
                .commit();

        context.currentResource("/content/custom-aem/us/en/products/product-page/product");

        this.modelFactory = context.getService(ModelFactory.class);
        final com.adobe.cq.commerce.core.components.models.product.Product coreProduct = Mockito.mock(com.adobe.cq.commerce.core.components.models.product.Product.class);
        this.model = this.modelFactory.createModel(context.request(), ProductImpl.class);
        final DelegateProductModel delegateProductModel = (DelegateProductModel) PrivateAccessor.getField(this.model, "product");
        this.delegateProductMock = delegateProductModel.delegateProductMock;
        this.productRetriever = delegateProductModel.productRetriever;
    }

    @Test
    void test(final AemContext context) throws Exception {
        assertNotNull(this.model);
    }

    /**
     * Mock Class to wrap a mock that can be injected into the class under test via the adapt mechanism.
     */
    @Model(
            adaptables = {SlingHttpServletRequest.class},
            adapters = {com.adobe.cq.commerce.core.components.models.product.Product.class},
            resourceType = {"core/cif/components/commerce/product/v1/productMock"},
            cache = true
    )
    public static class DelegateProductModel implements com.adobe.cq.commerce.core.components.models.product.Product{
        com.adobe.cq.commerce.core.components.models.product.Product delegateProductMock =
                Mockito.mock(com.adobe.cq.commerce.core.components.models.product.Product.class);
        private final AbstractProductRetriever productRetriever =
                Mockito.mock(AbstractProductRetriever.class);
        @Override
        public Boolean getFound() {
            return this.delegateProductMock.getFound();
        }

        @Override
        public String getName() {
            return this.delegateProductMock.getName();
        }

        @Override
        public String getDescription() {
            return this.delegateProductMock.getDescription();
        }

        @Override
        public String getSku() {
            return this.delegateProductMock.getSku();
        }

        @Override
        public Price getPriceRange() {
            return this.delegateProductMock.getPriceRange();
        }

        @Override
        public Boolean getInStock() {
            return this.delegateProductMock.getInStock();
        }

        @Override
        public Boolean isConfigurable() {
            return this.delegateProductMock.isConfigurable();
        }

        @Override
        public Boolean isGroupedProduct() {
            return this.delegateProductMock.isGroupedProduct();
        }

        @Override
        public Boolean isVirtualProduct() {
            return this.delegateProductMock.isVirtualProduct();
        }

        @Override
        public Boolean isBundleProduct() {
            return this.delegateProductMock.isBundleProduct();
        }

        @Override
        public String getVariantsJson() {
            return this.delegateProductMock.getVariantsJson();
        }

        @Override
        public List<Variant> getVariants() {
            return this.delegateProductMock.getVariants();
        }

        @Override
        public List<GroupItem> getGroupedProductItems() {
            return this.delegateProductMock.getGroupedProductItems();
        }

        @Override
        public List<Asset> getAssets() {
            return this.delegateProductMock.getAssets();
        }

        @Override
        public String getAssetsJson() {
            return this.delegateProductMock.getAssetsJson();
        }

        @Override
        public List<VariantAttribute> getVariantAttributes() {
            return this.delegateProductMock.getVariantAttributes();
        }

        @Override
        public Boolean loadClientPrice() {
            return this.delegateProductMock.loadClientPrice();
        }

        @Override
        public AbstractProductRetriever getProductRetriever() {
            return this.productRetriever;
        }

        @Override
        public ProductStorefrontContext getStorefrontContext() {
            return this.delegateProductMock.getStorefrontContext();
        }

        @Override
        public String getMetaDescription() {
            return this.delegateProductMock.getMetaDescription();
        }

        @Override
        public String getMetaKeywords() {
            return this.delegateProductMock.getMetaKeywords();
        }

        @Override
        public String getMetaTitle() {
            return this.delegateProductMock.getMetaTitle();
        }

        @Override
        public String getCanonicalUrl() {
            return this.delegateProductMock.getCanonicalUrl();
        }
    };
}

It's quite verbose, may be there's a cleaner solution..