package org.apidesign.apifest08.test;

 import junit.framework.TestCase;

 import org.apidesign.apifest08.currency.Amount;

 import org.apidesign.apifest08.currency.Convertor;

 import org.apidesign.apifest08.currency.ConvertorFactory;

 /** 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 createCZKtoUSD() {

         return ConvertorFactory.createConvertor(17);

     }

     /** 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() {

         return ConvertorFactory.createConvertor(0.8);

     }

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

      * with it.

      */

     public void testCurrencyCZKUSD() throws Exception {

         Convertor c = createCZKtoUSD();

         // convert $5 to CZK using c:

         assertEquals("Result is 85 CZK", 85l, c.convert(new Amount(5)).getAmount());

         // convert $8 to CZK

         assertEquals("Result is 136 CZK", 136l, c.convert(new Amount(8)).getAmount());

         // convert 1003CZK to USD

         assertEquals("Result is 136 CZK", 59l, c.convertBack(new Amount(1003)).getAmount());

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

     }

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

      * with it.

      */

     public void testCurrencySKKCZK() throws Exception {

         Convertor c = createSKKtoCZK();

         // convert 16CZK using c:

         assertEquals("Result is 20 SKK", 20l, c.convertBack(new Amount(16)).getAmount());

         // convert 500SKK to CZK

         assertEquals("Result is 400 CZK", 400l, c.convert(new Amount(500)).getAmount());

     }

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

      * with it.

      */

     public void testCurrencySKKCZKwithPences() throws Exception {

         Convertor c = createSKKtoCZK();

         // convert 16CZK 16h using c:

         assertEquals("Result is 20 SKK 20h", new Amount(20, 20), c.convertBack(new Amount(16, 16)));

         // convert 500SKK 80h to CZK

         assertEquals("Result is 400 CZK 64h", new Amount(400, 64), c.convert(new Amount(500, 80)));

         // convert 400CZK 80h to SKK

         assertEquals("Result is 501 CZK", new Amount(501), c.convertBack(new Amount(400, 80)));

     }

     public void testNegativeSKKCZ() throws Exception{

         Convertor c = createSKKtoCZK();

         // convert -16CZK using c:

         assertEquals("Result is -20", new Amount(-20), c.convertBack(new Amount(-16)));

         // convert -500SKK 80h to CZK

         assertEquals("Result is -400CZK 64h", new Amount(-400, 64), c.convert(new Amount(-500, 80)));

     }

 }