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package org.apidesign.apifest08.test;

import java.math.BigDecimal;

import java.text.SimpleDateFormat;

import junit.framework.TestCase;

import org.apidesign.apifest08.currency.ConversionResult;

import org.apidesign.apifest08.currency.Convertor;

import org.apidesign.apifest08.currency.ConvertorCurrency;

import org.apidesign.apifest08.currency.ExchangeRateProvider;

/**

 *

 * @author arnostvalicek

 */

public class RemainderTest extends TestCase {

    private static ConvertorCurrency CZK = ConvertorCurrency.getInstance("CZK");

    private static ConvertorCurrency SKK = ConvertorCurrency.getInstance("SKK");

    private static ConvertorCurrency USD = ConvertorCurrency.getInstance("USD");

    private SimpleDateFormat df;

    @Override

    protected void setUp() throws Exception {

        super.setUp();

        df = new SimpleDateFormat("yyyy-MM-dd HH:mm zzzz");

    }

    @Override

    protected void tearDown() throws Exception {

        super.tearDown();

    }

    public void testRemainder1() {

        Convertor c = Task2Test.createUsdToSkkConvertor();

        {

            final BigDecimal convertedValue = new BigDecimal("12.34");

            ConversionResult result = c.convertWithReversibleRates(SKK,USD,convertedValue);

            //System.out.println("Result = "+result);

            assertEquals("Converted", new BigDecimal("0.61"),result.getConverted());

            assertEquals("Remainder", new BigDecimal("0.14"),result.getRemainder());

            ConversionResult resultBack = c.convertWithReversibleRates(USD, SKK, result.getConverted());

            assertEquals("Conversion back", convertedValue, resultBack.getConverted().add(result.getRemainder()));

        }

        {

            ConversionResult result = c.convertWithReversibleRates(SKK,USD,new BigDecimal("20.00"));

            //System.out.println("Result = "+result);

        }

        {

            ConversionResult result = c.convertWithReversibleRates(USD,SKK,new BigDecimal("1.00"));

            //System.out.println("Result = "+result);

        }

    }

    public void testRemainderStripCents() {

        ConvertorCurrency CZK_cents=ConvertorCurrency.getInstance("CZK", 2);

        ConvertorCurrency CZK_nocents=ConvertorCurrency.getInstance("CZK", 0);

        ExchangeRateProvider exchangeRateProvider = ExchangeRateProvider.createExchangeRateProvider();

        exchangeRateProvider.addFixedCurencyRate(CZK_cents, new BigDecimal(1), CZK_nocents, new BigDecimal(1));

        Convertor c = Convertor.createConvertor(exchangeRateProvider);

        ConversionResult result = c.convertWithReversibleRates(CZK_cents, CZK_nocents, new BigDecimal("2.34"));

        assertEquals("Converted",new BigDecimal("2"),result.getConverted());

        assertEquals("Remainder",new BigDecimal("0.34"),result.getRemainder());

    }

}