Mockito for Spring

Mocking the servlet container with MockMvc

The design behind the Spring MVC test is to test the controller by performing actual requests and generating responses, as they would be at runtime. MockMvc is used to mock the servlet container, and it can perform a request and verify the resulting response status and response elements. We'll build a Spring controller to generate a JSON response as in the case of a rest controller and then use MockMvc to unit test the request and the response:

1. Create a serializable Employee POJO class that holds employee information, such as ID, name, and salary.
2. Create a controller to return a specific employee and all employees with /employees/{id} and /employees/ urls. We'll create a HashMap and store dummy employees. ...