package org.apidesign.apifest08.test;

 import junit.framework.TestCase;

 import org.apidesign.apifest08.currency.Convertor;

 import org.apidesign.apifest08.currency.CurrencyValue;

 /** 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 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<Integer, String> createCZKtoUSD() {

         return Convertor.getConvertorIntegerString(

                 CurrencyValue.getCurrencyValue(1, "USD"),

                 CurrencyValue.getCurrencyValue(17, "CZK")

         );

     }

     /** 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<Integer, String> createSKKtoCZK() {

         return Convertor.getConvertorIntegerString(

                 CurrencyValue.getCurrencyValue(100, "SKK"),

                 CurrencyValue.getCurrencyValue(80, "CZK")

         );

     }

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

      * with it.

      */

     public void testCurrencyCZKUSD() throws Exception {

         Convertor<Integer, String> c = createCZKtoUSD();

         CurrencyValue<Integer, String> result;

         // convert $5 to CZK using c:

         // assertEquals("Result is 85 CZK");

         result = c.convert(CurrencyValue.getCurrencyValue(5, "USD"));

         assertEquals(CurrencyValue.getCurrencyValue(85, "CZK"), result);

         // convert $8 to CZK

         // assertEquals("Result is 136 CZK");

         result = c.convert(CurrencyValue.getCurrencyValue(8, "USD"));

         assertEquals(CurrencyValue.getCurrencyValue(136, "CZK"), result);

         // convert 1003CZK to USD

         // assertEquals("Result is 59 USD");

         result = c.convert(CurrencyValue.getCurrencyValue(1003, "CZK"));

         assertEquals(CurrencyValue.getCurrencyValue(59, "USD"), result);

     }

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

      * with it.

      */

     public void testCurrencySKKCZK() throws Exception {

         Convertor<Integer, String> c = createSKKtoCZK();

         CurrencyValue<Integer, String> result;

         // convert 16CZK using c:

         // assertEquals("Result is 20 SKK");

         result = c.convert(CurrencyValue.getCurrencyValue(16, "CZK"));

         assertEquals(CurrencyValue.getCurrencyValue(20, "SKK"), result);

         // convert 500SKK to CZK

         // assertEquals("Result is 400 CZK");

         result = c.convert(CurrencyValue.getCurrencyValue(500, "SKK"));

         assertEquals(CurrencyValue.getCurrencyValue(400, "CZK"), result);

     }

 }