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 package org.apidesign.apifest08.test;

 import java.math.BigDecimal;

 import java.text.ParseException;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 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.ExchangeRate;

 import org.apidesign.apifest08.currency.ExchangeRateProvider;

 import org.apidesign.apifest08.currency.IDateExchangeRateEngine;

 import org.apidesign.apifest08.currency.IDateProviderEngine;

 /**

  *

  * @author arnostvalicek

  */

 public class ConvertorWithDateExchangeRateTest 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();

         df = null;

     }

     private IDateExchangeRateEngine createDateEngine() {

         IDateExchangeRateEngine engine = new IDateExchangeRateEngine() {

             public ExchangeRate getExchangeRate(ConvertorCurrency fromCurrency, ConvertorCurrency toCurrency, Date date) {

                 int day = date.getDay();

                 if (day >= 1 && day <= 5) {

                     //weekday

                     return new ExchangeRate(new BigDecimal(1), new BigDecimal(2));

                 } else {

                     //weekend

                     return new ExchangeRate(new BigDecimal(1), new BigDecimal(3));

                 }

             }

         };

         return engine;

     }

     private Convertor createConvertor() {

         ExchangeRateProvider exchangeRateProvider = ExchangeRateProvider.createDateExchangeRateProvider(createDateEngine());

         Convertor c = Convertor.createConvertor(exchangeRateProvider);

         return c;

     }

     public void testConvertuUsingDifferentRatesForDays() throws ParseException {

         Convertor c = createConvertor();

         {

             Date d1 = df.parse("2008-10-15 9:00 GMT");  //Wednesday

             ConversionResult resultWeekday = c.convert(CZK, SKK, new BigDecimal("2.3"), d1);

             assertEquals("Weekday conversion", new BigDecimal("4.60"), resultWeekday.getConverted());

         }

         {

             Date d1 = df.parse("2008-10-18 9:00 GMT");  //Saturday

             ConversionResult resultWeekday = c.convert(CZK, SKK, new BigDecimal("2.3"), d1);

             assertEquals("Weekday conversion", new BigDecimal("6.90"), resultWeekday.getConverted());

         }

     }

     public void testConvertUsingDifferenDefaultDay() throws ParseException {

         class MyDateProvider implements IDateProviderEngine {

             private Date date;

             void setDate(Date date) {

                 this.date = date;

             }

             public Date getCurrentDate() {

                 return date;

             }

         }

         Convertor c = createConvertor();

         MyDateProvider dp = new MyDateProvider();

         c.setDateProvider(dp);

         {

             dp.setDate(df.parse("2008-10-15 9:00 GMT")); //Wednesday

             ConversionResult resultWeekday = c.convert(CZK, SKK, new BigDecimal("2.3"));

             assertEquals("Weekday conversion", new BigDecimal("4.60"), resultWeekday.getConverted());

         }

         {

             dp.setDate(df.parse("2008-10-18 9:00 GMT"));  //Saturday

             ConversionResult resultWeekday = c.convert(CZK, SKK, new BigDecimal("2.3"));

             assertEquals("Weekday conversion", new BigDecimal("6.90"), resultWeekday.getConverted());

         }

     }

 }