The code to perform integration testing on retrieveTodos in TodoController is shown in the following code snippet. This would be added to the TodoControllerIT class:

     @Test
     public void retrieveTodo() throws Exception {
       String expected = "{id:1,user:Jack,desc:"Learn Spring   
       MVC",done:false}";
       ResponseEntity<String> response = template.getForEntity(
       createUrl("/users/Jack/todos/1"), String.class);
       JSONAssert.assertEquals(expected, response.getBody(), false);
     }