ZCW-PhoneBook/PhoneBookTest.java

import static org.junit.Assert.*;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * The test class PhoneBookTest.
 *
 * @author  (your name)
 * @version (a version number or a date)
 */
public class PhoneBookTest
{
   @Test
   public void phoneBooktest(){
       PhoneBook yellowPages = new PhoneBook();
       
       
    }
    
   @Test
   public void addTest(){
    //Given 
    PhoneBook yellowPages = new PhoneBook();
    yellowPages.add("Jenny", "123-867-5309");
    
    //Then:
    String actual = yellowPages.lookUp("Jenny");
    String expected = "123-867-5309";
    
    //Assert:
    
    assertEquals(expected, actual);
    
    }
    
    @Test
    public void removeTest() {
    //Given:
    PhoneBook yellowPages = new PhoneBook();
    yellowPages.add("Jenny", "123-867-5309");
    yellowPages.remove("Jenny");
    //Then:
    int actual = yellowPages.getSize();
    int expected = 0;
    //Assert:
    assertEquals(expected, actual);
    
    }
    
    @Test
    public void reverseLookUpTest() {
   //Given:
   PhoneBook yellowPages = new PhoneBook();
    yellowPages.add("Jenny", "123-867-5309");
   //Then:
   String actual = yellowPages.reverseLookUp("123-867-5309");
   String expected = "Jenny";
    //Assert:
    assertEquals(expected, actual);
    
    }
    
    @Test
    public void displayTest(){
    //Given:
    
    PhoneBook yellowPages = new PhoneBook();
    yellowPages.add("Jenny", "123-867-5309");
    
    
    //Then:
    
    String actual = yellowPages.display();
    String expected ="Jenny : 123-867-5309";
    
    //Assert:
    assertEquals(expected, actual);
    }
}