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
{
    private PhoneBook phoneBook;
    /**
     * Default constructor for test class PhoneBookTest
     */
    public PhoneBookTest()
    {
    }

    /**
     * Sets up the test fixture.
     *
     * Called before every test case method.
     */
    @Before
    public void setUp()
    {
       phoneBook = new PhoneBook();
    }
    
    @Test
    public void testAdd() {
        //Given
        String name = "J";
        String phoneNumber = "2121112222";
        
        //Then
        phoneBook.addListings(name, phoneNumber);
        int expectedSize = 1;
        int actualSize = phoneBook.size();
        
        //
        assertEquals(expectedSize, actualSize);
    }
    
    @Test
    public void testRemove() {
        //Given
        String name = "J";
        String phoneNumber = "2121112222";
        
        //Then
        phoneBook.addListings(name, phoneNumber);
        int expectedSize = 1;
        int actualSize = phoneBook.size();
        
        //
        assertEquals(expectedSize, actualSize);
    }

    @Test
    public void testLookup() {
        //Given
        String name = "J";
        String phoneNumber = "2121112222";
        
        //Then
        phoneBook.addListings(name, phoneNumber);
        int expectedSize = 1;
        int actualSize = phoneBook.size();
        
        //
        assertEquals(expectedSize, actualSize);
    }
    
    @Test
    public void testReverseLookup() {
        //Given
        String name = "J";
        String phoneNumber = "2121112222";
        
        //Then
        phoneBook.addListings(name, phoneNumber);
        int expectedSize = 1;
        int actualSize = phoneBook.size();
        
        //
        assertEquals(expectedSize, actualSize);
    }
    
    @Test
    public void testReverseLookupWhenNotFound() {
        //Given
        String name = "J";
        String phoneNumber = "2121112222";
        
        //Then
        phoneBook.addListings(name, phoneNumber);
        int expectedSize = 1;
        int actualSize = phoneBook.size();
        
        //
        assertEquals(expectedSize, actualSize);
    }
}