Classe exemplo de teste gerada pelo archetype quickstart do Maven.

AppTest.java

package com.andgomes;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

public class AppTest extends TestCase {
    
    public AppTest(String testName) {
        super(testName);  
    }
  
    public static Test suite() {
        return new TestSuite(AppTest.class);  
    }
  
    public void testApp() {
        assertTrue(true);  
    }  
  
}