~cpp 

package dooly.tdd.vending;

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

public class VendingMachineTest extends TestSuite {

	public static Test suite() {
		TestSuite suite = new TestSuite("Test for dooly.tdd.vending");
		//$JUnit-BEGIN$
		suite.addTestSuite(PerchaseItemTest.class);
		suite.addTestSuite(RegistItemTest.class);
		//$JUnit-END$
		return suite;
	}
}


package dooly.tdd.vending;

import junit.framework.TestCase;

public class PerchaseItemTest extends TestCase {
	private static final int GREEN_TEA_PRICE = 500;
	private static final int COFFEE_PRICE = 400;
	private static final int TEA_PRICE = 300;

	private VendingMachine vm;
	public void setUp() {
		vm = new VendingMachine();
		vm.add("녹차", GREEN_TEA_PRICE);
		vm.add("커피", COFFEE_PRICE);
		vm.add("홍차", TEA_PRICE);
	}

	public void testWaitState() {
		assertEquals(0, vm.getMoney());
		assertEquals(3, vm.getItems().size());
	}

	public void testPutMoney() {
		vm.putMoney(1000);
		assertEquals(1000, vm.getMoney());

		vm.putMoney(2000);
		assertEquals(1000 + 2000, vm.getMoney());
	}

	public void testPerchase() {
		vm.putMoney(1000);
		assertEquals("녹차", vm.getItem("녹차"));
		assertEquals(1000 - GREEN_TEA_PRICE, vm.getMoney());
		assertEquals("커피", vm.getItem("커피"));
		assertEquals(1000 - GREEN_TEA_PRICE - COFFEE_PRICE, vm.getMoney());
	}

	public void testPerchaseWrongItem() {
		vm.putMoney(1000);
		assertEquals("", vm.getItem("cola"));
		assertEquals(1000, vm.getMoney());
		assertEquals("커피", vm.getItem("커피"));
		assertEquals(1000 - COFFEE_PRICE, vm.getMoney());
	}
	
	public void testShortMoney() {
		vm.putMoney(200);
		assertEquals("", vm.getItem("녹차"));
		assertEquals(200, vm.getMoney());
		vm.putMoney(500);
		assertEquals("녹차", vm.getItem("녹차"));
		assertEquals(200 + 500 - GREEN_TEA_PRICE, vm.getMoney());
		assertEquals("", vm.getItem("녹차"));
		assertEquals(200 + 500 - GREEN_TEA_PRICE, vm.getMoney());
	}

	public void testRefund(){
		vm.putMoney(100);
		assertEquals(100, vm.refund());
		assertEquals(0, vm.getMoney());
		vm.putMoney(200);
		assertEquals(200, vm.getMoney());
	}
}


package dooly.tdd.vending;

import junit.framework.TestCase;

public class RegistItemTest extends TestCase {
	private VendingMachine vm;

	public void setUp() {
		vm = new VendingMachine();
	}

	public void tearDown() {
		vm = null;
	}

	public void testEmptyMatchine() {
		assertEquals(0, vm.getItems().size());
	}

	public void testAddItem() {
		vm.add("커피", 500);
		assertEquals(1, vm.getItems().size());
	}

	public void testGetItem() {
		vm.add("커피", 500);
		assertEquals(500, vm.getPrice("커피"));
	}

	public void testGetWrongItem() {
		vm.add("커피", 500);
		assertEquals(0, vm.getPrice("녹차"));
		assertEquals(500, vm.getPrice("커피"));

		vm.add("녹차", 100);
		assertEquals(100, vm.getPrice("녹차"));
	}
}


package dooly.tdd.vending;

import java.util.HashMap;
import java.util.Map;

public class VendingMachine {
	private Map itemMap = new HashMap();

	private int money;

	public Map getItems() {
		return itemMap;
	}

	public void add(String item, int price) {
		itemMap.put(item, new Integer(price));
	}

	public int getPrice(String item) {
		if (itemMap.containsKey(item))
			return ((Integer) itemMap.get(item)).intValue();
		return 0;
	}

	public int getMoney() {
		return money;
	}

	public void putMoney(int money) {
		if (money >= 0) {
			this.money += money;
		}
	}

	public String getItem(String item) {
		if (notExist(item))
			return "";
		if (shortMoneyFor(item))
			return "";

		this.money -= getPrice(item);
		return item;
	}

	private boolean shortMoneyFor(String item) {
		return money < getPrice(item);
	}

	private boolean notExist(String item) {
		return !itemMap.containsKey(item);
	}

	public int refund() {
		int refund = money;
		money = 0;
		return refund;
	}
}