package org.apidesign.apifest08.test;

 import java.util.Currency;

 import junit.framework.TestCase;

 import org.apidesign.apifest08.currency.Convertor;

 import org.apidesign.apifest08.currency.ConvertorFactory;

 import org.apidesign.apifest08.currency.MoneyImpl;

 /** Finish the Convertor API, and then write bodies of methods inside

  * of this class to match the given tasks. To fullfil your task, use the

  * API define in the <code>org.apidesign.apifest08.currency</code> package.

  * Do not you reflection, or other hacks as your code

  * shall run without any runtime permissions.

  */

 public class Task1Test extends TestCase {

 	public static final Currency USD = Currency.getInstance("USD");

 	public static final Currency CZK = Currency.getInstance("CZK");

 	public static final Currency SKK = Currency.getInstance("SKK");

     public Task1Test(String testName) {

         super(testName);

     }

     @Override

     protected void setUp() throws Exception {

     }

     @Override

     protected void tearDown() throws Exception {

     }

     /** Create convertor that understands two currencies, CZK and

      *  USD. Make 1 USD == 17 CZK.

      *

      * Creation of the convertor shall not require subclassing of any class

      * or interface on the client side.

      *

      * @return prepared convertor ready for converting USD to CZK and CZK to USD

      */

     public static Convertor createCZKtoUSD() {

       //You can use both variants. I wrote the first one but than I realized that maybe

       //you want me to write the second one. So I have written both. 

       return ConvertorFactory.createConvertor(CZK, USD);

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

     }

     /** Create convertor that understands two currencies, CZK and

      *  SKK. Make 100 SKK == 80 CZK.

      *

      * Creation of the convertor shall not require subclassing of any class

      * or interface on the client side.

      * 

      * @return prepared convertor ready for converting SKK to CZK and CZK to SKK

      */

     public static Convertor createSKKtoCZK() {

     	//You can use both variants. I wrote the first one but than I realized that maybe

         //you want me to write the second one. So I have written both.

         //return ConvertorFactory.createConvertor(SKK, CZK);

         return ConvertorFactory.createConvertor(new MoneyImpl(100,SKK), new MoneyImpl(80,CZK));

     }

     /** Use the convertor from <code>createCZKtoUSD</code> method and do few conversions

      * with it.

      */

     public void testCurrencyCZKUSD() throws Exception {

         Convertor czkToUsdConvertor = createCZKtoUSD();

         // convert $5 to CZK using c:

         Convertor usdToCzkConvertor = czkToUsdConvertor.revert();

 		assertEquals("Result is 85 CZK",new MoneyImpl(85,CZK), usdToCzkConvertor.convert(new MoneyImpl(5,USD)));

         // convert $8 to CZK

         assertEquals("Result is 136 CZK",new MoneyImpl(136,CZK), usdToCzkConvertor.convert(new MoneyImpl(8,USD)));

         // convert 1003CZK to USD

         assertEquals("Result is 59 USD", new MoneyImpl(59,USD), czkToUsdConvertor.convert(new MoneyImpl(1003,CZK)));

     }

     /** Use the convertor from <code>createSKKtoCZK</code> method and do few conversions

      * with it.

      */

     public void testCurrencySKKCZK() throws Exception {

         Convertor skkToCzkConvertor = createSKKtoCZK();

         // convert 16CZK using c:

         assertEquals("Result is 20 SKK", new MoneyImpl(20,SKK), skkToCzkConvertor.revert().convert(new MoneyImpl(16,CZK)));

         // convert 500SKK to CZK

         assertEquals("Result is 400 CZK", new MoneyImpl(400,CZK), skkToCzkConvertor.convert(new MoneyImpl(500,SKK)));

     }

 }