UNLaM - TW1 - Billetera

BilleteException.java

package ar.edu.unlam.tallerweb.billetera;

public class BilleteException extends Exception {

	private static final long serialVersionUID = 8656459465486574L;

	public BilleteException(String message){
		super(message);
	}
}

Billetera.java

package ar.edu.unlam.tallerweb.billetera;

import java.math.BigDecimal;

public class Billete {

	private BigDecimal monto;
	private String moneda;
	
	public Billete(BigDecimal monto, String moneda) {
		this.monto = monto;
		this.moneda = moneda;
		
	}

	public Billete sumar (Billete otro) throws BilleteException {
		if (this.moneda.equals(otro.moneda)){
			return new Billete (this.monto.add(otro.monto), this.moneda);
		} else{
			throw new BilleteException("No se pueden sumar Billetes de diferente Moneda");
		}
	}

	public BigDecimal getMonto() {
		return this.monto;
	}

	public String getMoneda() {
		return this.moneda;
	}
}

BilleteraTest.java

package ar.edu.unlam.tallerweb.billetera;

import java.math.BigDecimal;

import org.junit.Assert;
import org.junit.Test;


public class BilleteraTest {


		@Test
		public void testQueSePuedaSumar() throws BilleteException{
			Billete b1 = new Billete(new BigDecimal("1"),"pesos");
			Billete b2 = new Billete(new BigDecimal("1"),"pesos");
			
			Billete b3 = b1.sumar(b2);
			
			Assert.assertEquals(new BigDecimal("2"), b3.getMonto());
			
			Assert.assertEquals("pesos", b3.getMoneda());
			
		}

		@Test(expected=BilleteException.class)
		public void testQueNoSePuedaSumar() throws BilleteException{
			Billete b1 = new Billete(new BigDecimal("1"),"pesos");
			Billete b2 = new Billete(new BigDecimal("1"),"dolares");
			
			b1.sumar(b2);
			
		}
		
		
	}