title: Why to use Mockito?
body: <p>I am new to Mockito and I have started to learn it. But I have some questions. Why do we need to use Mockito? As far as I know it is used to Mock(Create dummy object) and write the test cases before having actual running code. But, what if I want to test my already implemented code to check whether they are functioning properly or not. How would I test it using Mockito?</p>
  
  <p>For instance, I have CRUD methods and I would like to test whether Create is functioning properly by actually inserting data in database using my Create method, similarly for others. Can we attain it using Mockito. If not, then do I need to write different testcases for them without using Mockito?</p>