@Test
public void testModifyTagInSearchIndexBlankMessage()
{

    // Create a tag entity
    TagEntity tagEntity = new TagEntity();
    tagEntity.setId(1L);
    // Create a list of tag ids
    List<Long> tagIds = new ArrayList<>();
    tagIds.add(tagEntity.getId());
    // Create a search index dto
    SearchIndexUpdateDto searchIndexUpdateDto = new SearchIndexUpdateDto(MESSAGE_TYPE_TAG_UPDATE, tagIds, SEARCH_INDEX_UPDATE_TYPE_UPDATE);
    // Mock the call to external methods
    when(jsonHelper.objectToJson(searchIndexUpdateDto)).thenReturn("");
    when(configurationHelper.getProperty(ConfigurationValue.SEARCH_INDEX_UPDATE_JMS_LISTENER_ENABLED)).thenReturn("true");
    when(configurationHelper.getProperty(ConfigurationValue.SEARCH_INDEX_UPDATE_SQS_QUEUE_NAME)).thenReturn(AWS_SQS_QUEUE_NAME);
    // Call the method under test
    searchIndexUpdateHelper.modifyTagInSearchIndex(tagEntity, SEARCH_INDEX_UPDATE_TYPE_UPDATE);
    // Verify the calls to external methods
    verify(jsonHelper).objectToJson(searchIndexUpdateDto);
    verify(configurationHelper).getProperty(ConfigurationValue.SEARCH_INDEX_UPDATE_JMS_LISTENER_ENABLED);
    verifyNoMoreInteractionsHelper();
}