need some lights for JUNIT test for ResourceResolverService Implementation class

[subnaik]

Dear all,

I have one simple service implementation class called ResourceResolverServiceImpl and I want to write JUNIT test class for this. I am very new to this JUNIT test.

************************* ResourceResolverServiceImpl Class *********************

import test.contentadmin.core.service.ResourceResolverService;
import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.api.resource.ResourceResolverFactory;
import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

import java.util.HashMap;
import java.util.Map;

@Component(service = ResourceResolverService.class, immediate = true)
public class ResourceResolverServiceImpl implements ResourceResolverService {

    private static final String SYSTEM_USER = "datawrite";

    @reference
    ResourceResolverFactory resourceResolverFactory;

    @Override
    public ResourceResolver getResourceResolver() throws LoginException {

        Map<String, Object> param = new HashMap<>();
        param.put(ResourceResolverFactory.SUBSERVICE, SYSTEM_USER);
        return resourceResolverFactory.getServiceResourceResolver(param);
    }
}

******************************** ResourceResolverService Class *********************

import org.apache.sling.api.resource.LoginException;
import org.apache.sling.api.resource.ResourceResolver;

public interface ResourceResolverService {
	public ResourceResolver getResourceResolver() throws LoginException;
}

Now I want to write the JUNIT for this...any good docs "or" video is there for this JUNIT ?

Please suggest.

Thanks & Regards

sub

[Mahedi_Sabuj · Accepted solution]

Hi @subnaik, You can mock ResourceResolverFactory using MockResourceResolverFactory.

private AemContext ctx = new AemContext(
    ResourceResolverType.RESOURCERESOLVER_MOCK);
private ResourceResolverServiceImpl resolverService;

@BeforeEach
void setUp() {
  ctx.registerService(
      ResourceResolverFactory.class, 
      new MockResourceResolverFactory());
  resolverService = ctx.registerInjectActivateService(
      new ResourceResolverServiceImpl());
}

Reference: https://experienceleaguecommunities.adobe.com/t5/adobe-experience-manager/how-to-register-resource-r...