AEM6.5 Junit with MockitoJUnitRunner for TagManager

Hi @srinivas_chann1, below you can find fully working example. Please keep in mind that I have added comparator, because the order of tags in your method getTags is not guarantee. Also I did not know how you exposing your method, is it via servlet, OSGi service or Sling Model. In my example I am using Sling Model - but in general it should be the same for all above types. I was able to run it without any problem.

• Sling Model with your method:
  

  package com.mysite.core.models;
  
  import com.day.cq.tagging.Tag;
  import com.day.cq.tagging.TagManager;
  import org.apache.sling.api.resource.Resource;
  import org.apache.sling.api.resource.ResourceResolver;
  import org.apache.sling.models.annotations.Model;
  
  @Model(adaptables = Resource.class)
  public class MyModel {
  
      public Tag[] getTags(Resource resource, ResourceResolver resourceResolver) {
          Resource metadataResource = resource.getChild("jcr:content").getChild("metadata");
          TagManager tagMgr = resourceResolver.adaptTo(TagManager.class);
          return tagMgr.getTags(metadataResource);
      }
  }

• json file, called assets.json and it is located directly under resources folder
  

  {
    "test.pdf": {
      "jcr:primaryType": "dam:Asset",
      "jcr:content": {
        "jcr:primaryType": "dam:AssetContent",
        "metadata": {
          "jcr:primaryType": "nt:unstructured",
          "cq:tags": ["tag1", "tag2"]
        }
      }
    }
  }

• JUnit test
  

  package com.mysite.core.models;
  
  import com.day.cq.tagging.InvalidTagFormatException;
  
  import io.wcm.testing.mock.aem.junit.AemContext;
  import org.apache.sling.api.resource.Resource;
  import org.apache.sling.testing.mock.sling.ResourceResolverType;
  import org.junit.Assert;
  import org.junit.Test;
  import com.day.cq.tagging.Tag;
  import com.day.cq.tagging.TagManager;
  import org.mockito.junit.MockitoJUnitRunner;
  import org.junit.Rule;
  import org.junit.runner.RunWith;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.Comparator;
  
  @RunWith(MockitoJUnitRunner.class)
  public class MyModelTest {
  
      @Rule
      public final AemContext context = new AemContext(ResourceResolverType.JCR_MOCK);
  
      private Resource resource;
  
      @Test
      public void testAssetByteSizeValue() throws InvalidTagFormatException {
          context.load().json("/asset.json", "/content/dam");
          resource = context.resourceResolver().getResource("/content/dam/test.pdf");
  
          TagManager tagManager = context.resourceResolver().adaptTo(TagManager.class);
          Tag tag1 = tagManager.createTag("tag1", "Tag 1 title", "Tag 1 desc");
          Tag tag2 = tagManager.createTag("tag2", "Tag 2 title", "Tag 2 desc");
          Tag[] expectedTags = new Tag[] {tag1, tag2};
  
          Tag[] actualTags = new MyModel()
                  .getTags(resource, context.resourceResolver());
  
          Collections.sort(Arrays.asList(expectedTags), new TagsByNameComparator());
          Collections.sort(Arrays.asList(actualTags), new TagsByNameComparator());
  
          Assert.assertArrayEquals(expectedTags, actualTags);
      }
  
      private class TagsByNameComparator implements Comparator<Tag> {
          public int compare(Tag tag1, Tag tag2) {
              return tag1.getName().compareTo(tag2.getName());
          }
      }
  }