How to write junit for below code

Question

ValueMap vm = assetResource.getValueMap();
String version = vm.get("jcr:lastModifiedVersion", String.class);
boolean isNewAsset = vm.containsKey("newAsset");
if (!isNewAsset) {
Resource rr= resourceResolver.getResource(path);
ModifiableValueMap mvm = rr.adaptTo(ModifiableValueMap.class);
mvm.put(newversion,version + 1));

} else if (isNewAsset) {
Resource rr= resourceResolver.getResource(path);
ModifiableValueMap mvm= rr.adaptTo(ModifiableValueMap.class);
mvm.put(newversion,version + 2));
}

konstantyn_diachenko · Accepted Answer

Hi @djohn98390536,

if you are interesting in the AEM Unit test, you can use my code below. However, I would suggest you to refactor your piece of code firstly, because it could lead to NullPointerException.

Refactored code (ResourceResolver#getResource, Resource#adaptTo can return null):

import org.apache.sling.api.resource.ModifiableValueMap;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ValueMap;

import java.util.Optional;

public class Foo {
    public void barNew(Resource assetResource, String newversion, String path) {
        ResourceResolver resourceResolver = assetResource.getResourceResolver();
        ValueMap vm = assetResource.getValueMap();
        String version = vm.get("jcr:lastModifiedVersion", String.class);
        boolean isNewAsset = vm.containsKey("newAsset");
        String newVersion = isNewAsset ? version + 2 : version + 1;
        Optional.ofNullable(resourceResolver.getResource(path))
                .map(resource -> resource.adaptTo(ModifiableValueMap.class))
                .ifPresent(mvm -> mvm.put(newversion, newVersion));
    }
}

AEM Unit test:

import com.day.cq.dam.api.Asset;
import io.wcm.testing.mock.aem.junit5.AemContext;
import io.wcm.testing.mock.aem.junit5.AemContextExtension;
import org.apache.sling.api.resource.ModifiableValueMap;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ValueMap;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;

import java.io.ByteArrayInputStream;

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

@ExtendWith(AemContextExtension.class)
class FooTest {

    private AemContext aemContext = new AemContext();

    private Foo foo;
    private Resource assetResource;

    @BeforeEach
    void setUp() {
        foo = new Foo();
        Asset asset = aemContext.create().asset("/conten/dam/foo.json", new ByteArrayInputStream("{}".getBytes()), "application/json");
        assetResource = asset.adaptTo(Resource.class);
    }

    @Test
    void testBar_notNewAsset() {
        ModifiableValueMap modifiableValueMap = assetResource.adaptTo(ModifiableValueMap.class);
        modifiableValueMap.put("jcr:lastModifiedVersion", "123");

        String path = "/conten/dam/foo.json";
        foo.barNew(assetResource, "new-version-property", path);

        ValueMap valueMap = aemContext.resourceResolver().getResource(path).getValueMap();
        assertEquals("1231", valueMap.get("new-version-property"));
    }

    @Test
    void testBar_newAsset() {
        ModifiableValueMap modifiableValueMap = assetResource.adaptTo(ModifiableValueMap.class);
        modifiableValueMap.put("jcr:lastModifiedVersion", "123");
        modifiableValueMap.put("newAsset", true);

        String path = "/conten/dam/foo.json";
        foo.barNew(assetResource, "new-version-property", path);

        ValueMap valueMap = aemContext.resourceResolver().getResource(path).getValueMap();
        assertEquals("1232", valueMap.get("new-version-property"));
    }

    @Test
    void testBar_setToNotExistingPath() {
        ModifiableValueMap modifiableValueMap = assetResource.adaptTo(ModifiableValueMap.class);
        modifiableValueMap.put("jcr:lastModifiedVersion", "123");
        modifiableValueMap.put("newAsset", true);

        String path = "/conten/dam/not-existing-path.json";
        foo.barNew(assetResource, "new-version-property", path);

        assertNull(aemContext.resourceResolver().getResource(path));
    }

    @Test
    void testBar_setToExistingPath() {
        ModifiableValueMap modifiableValueMap = assetResource.adaptTo(ModifiableValueMap.class);
        modifiableValueMap.put("jcr:lastModifiedVersion", "123");
        modifiableValueMap.put("newAsset", true);
        String path = "/conten/dam/not-existing-path.json";
        aemContext.create().resource(path);

        foo.barNew(assetResource, "new-version-property", path);

        ValueMap valueMap = aemContext.resourceResolver().getResource(path).getValueMap();
        assertEquals("1232", valueMap.get("new-version-property"));
    }

}

If tests are failing, please add the following Maven dependency:

 <dependency>
   <groupId>xerces</groupId>
   <artifactId>xercesImpl</artifactId>
   <version>2.11.0</version>
   <scope>test</scope>
</dependency>

AMANATH_ULLAH · Answer

@djohn98390536

Below is the junit code

import static org.mockito.Mockito.*;
import static org.junit.Assert.*;

import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ValueMap;
import org.apache.sling.api.resource.ModifiableValueMap;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

public class AssetTest {

@Mock
private Resource assetResource;

@Mock
private ResourceResolver resourceResolver;

@Mock
private ValueMap valueMap;

@Mock
private Resource resource;

@Mock
private ModifiableValueMap modifiableValueMap;

@InjectMocks
private AssetService assetService; // Assuming the code belongs to a service class named AssetService

private final String path = "/content/dam/sample";
private final String versionKey = "jcr:lastModifiedVersion";
private final String newVersionKey = "newVersion";
private final String version = "1.0";

@Before
public void setup() {
MockitoAnnotations.initMocks(this);
when(assetResource.getValueMap()).thenReturn(valueMap);
when(resourceResolver.getResource(path)).thenReturn(resource);
when(resource.adaptTo(ModifiableValueMap.class)).thenReturn(modifiableValueMap);
}

@Test
public void testExistingAsset() {
// Setup
when(valueMap.get(versionKey, String.class)).thenReturn(version);
when(valueMap.containsKey("newAsset")).thenReturn(false);

// Execute
assetService.updateAsset(assetResource, resourceResolver, path);

// Verify
verify(modifiableValueMap).put(newVersionKey, "1.01");
}

@Test
public void testNewAsset() {
// Setup
when(valueMap.get(versionKey, String.class)).thenReturn(version);
when(valueMap.containsKey("newAsset")).thenReturn(true);

// Execute
assetService.updateAsset(assetResource, resourceResolver, path);

// Verify
verify(modifiableValueMap).put(newVersionKey, "1.02");
}
}

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