package org.apidesign.apifest08.test;

import static junit.framework.Assert.assertNotNull;

import static org.apidesign.apifest08.test.Task1Test.CZK;

import static org.apidesign.apifest08.test.Task1Test.USD;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertTrue;

import static org.junit.Assert.fail;

import org.apidesign.apifest08.currency.Convertor;

import org.apidesign.apifest08.currency.ConvertorFactory;

import org.apidesign.apifest08.currency.MoneyImpl;

import org.junit.Test;

public class ConvertorFactoryTest {

	@Test(expected=NullPointerException.class)

	public void testNullSource()

	{

		ConvertorFactory.createConvertor(null, new MoneyImpl(1,USD));

	}

	@Test(expected=NullPointerException.class)

	public void testNullDestination()

	{

		ConvertorFactory.createConvertor(new MoneyImpl(17,CZK), null);

	}

	@Test

	public void testOk()

	{

		assertNotNull(ConvertorFactory.createConvertor(new MoneyImpl(17,CZK),  new MoneyImpl(1,USD)));

	}

	@Test

	public void testOkDecimalRate()

	{

		Convertor c = ConvertorFactory.createConvertor(new MoneyImpl(1,CZK),  new MoneyImpl(1d/17d,USD));

		assertNotNull(c);

		assertEquals(new MoneyImpl(17,CZK),c.convert(new MoneyImpl(1,USD), CZK));

	}

	@Test

	public void testZeroEquivalentRate()

	{

		try

		{

			ConvertorFactory.createConvertor(new MoneyImpl(1,CZK),  new MoneyImpl(0,USD));

			fail("Exception expected");

		}

		catch(IllegalArgumentException e)

		{

			assertTrue("OK",true);

		}

	}

}