title: Functionality of data-sly-test for given example in image
body: <p>Please find the below snippet. Can any one explain above functionality for the data-sly-test. How it will work condition here for image??</p>
  
  <pre><code>&lt;div class="spon-image-container col-12 col-md-4"&gt;
      &lt;sly data-sly-test="${properties.fileReference}"&gt;
          &lt;img class="spon-_image" src="${properties.fileReference}"/&gt;
      &lt;/sly&gt;
  &lt;/div&gt;
  </code></pre>