Testing Spring REST applications

In this section, we will continue towards test implementation and will be testing Spring-specific topics. First of all, we will specify the SprintRunner class, which is going to be used as the test runner for our tests:

package com.journaler 
 
import org.junit.After 
import org.junit.Before 
import org.junit.Test 
import org.junit.runner.RunWith 
import org.springframework.test.context.junit4.SpringRunner 
 
@RunWith(SpringRunner::class) 
class NoteTest { 
    ... 
} 

By annotating @RunWith(SpringRunner::class), we specified that SpringRunner will be used for test running and will be initializing TestContextManager to provide Spring testing functionality to standard tests. Let's run the test once more. Observe the output in the following screenshot:

As you can see, Spring Framework is being used to support the test we just run.

As we already know, the NoteTest class doesn't have any implementation. We will test the Service layer of our application, and we will...