ZCW-PhoneBook/PhoneBookTest.java

import org.junit.Assert;
import org.junit.Test;
import java.util.Map;
import java.util.TreeMap;

/**
 * The test class PhoneBookTest.
 *
 * @author  (your name)
 * @version (a version number or a date)
 */
public class PhoneBookTest
{
    @Test
    public void addEntryTest(){
    //Given
    PhoneBook phoneBook = new PhoneBook();
    String name = "Zebra";
    String phoneNumber = "111-222-333";
    String expected = "Zebra , 111-222-333";
    //When
    phoneBook.addEntry(name,phoneNumber);
    
    //Then
    Assert.assertEquals(1,phoneBook.size());
    
    }
    @Test
    public void removeEntry(){
    //Given
    PhoneBook phoneBook = new PhoneBook();
    String name = "Zebra";
    String expected = "";
    //when
    phoneBook.removeEntry(name);
    //Then
    Assert.assertEquals(0, phoneBook.size());
    }
    
  
    
    @Test
    public void lookUp(){
    PhoneBook phoneBook = new PhoneBook();
    String name = "Zebra";
    String expected = "111-222-333";
    phoneBook.addEntry(name,expected);
    //when
    String actual = phoneBook.lookUp(name);
    //then
    Assert.assertEquals(expected,actual);
    }
    
    @Test
    public void reverseLoopUp(){
    PhoneBook phoneBook = new PhoneBook();
    String phoneNumber = "111-222-333";
    String expected = "Zebra";
    //when
    // String actual = phoneBook.reverseLookUp(phoneNumber);
    //then
    // Assert.assertEquals(expected,actual);
    }
    
    @Test
    public void display(){
    }
}