ZCW-PhoneBook/PhoneBookTest.java

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

/**
 * The test class PhoneBookTest.
 *
 * @author  (your name)
 * @version (a version number or a date)
 */
public class PhoneBookTest
{
    private PhoneBook pb = new PhoneBook();

    @Before
    public void setup() {
        pb = new PhoneBook();
    }

    @Test
    public void addNameStringNumbers() {
        assertEquals(
            pb.add("John", "101-101-1011"),
            new ArrayList<String>(
                Arrays.asList("101-101-1011")
                )
        );
    }

    @Test
    public void addNameArrayList() {
        ArrayList<String> numbers = new ArrayList<String>(Arrays.asList(
                    "101-101-1011",
                    "202-202-2022"
                    ));
        assertEquals(
                pb.add("John", numbers),
                numbers
                );
    };

    @Test
    public void removeByName() {
        pb.add("John", "101-101-1011");
        pb.remove("John");
        
        assertEquals(
                pb.lookup("John"),
                null
                );
    }
    
    @Test
    public void removeMultipleNumbers() {
        pb.add("John", "101-101-1011");
        pb.add("John", "201-101-1011");
        pb.remove("John", "201-101-1011");
        
        assertEquals(
            pb.lookup("John"),
            new ArrayList<String>(Arrays.asList("101-101-1011"))
            );
    }
    
    @Test
    public void lookup() {
        pb.add("John", "101-101-1011");
        assertEquals(
            pb.lookup("John"),
            new ArrayList<String>(Arrays.asList("101-101-1011"))
            );
    }
    
    @Test
    public void reverseLookup() {
        pb.add("John", "101-101-1011");
        assertEquals(
            pb.reverseLookup("101-101-1011"),
            "John"
            );
    }
}