package org.apidesign.apifest08.test;

 import java.math.BigDecimal;

 import java.util.Currency;

 import junit.framework.TestCase;

 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.getConvertor("CZK", "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()

     {

         return (ConvertorFactory.getConvertor(Currency.getInstance("SKK"), Currency.getInstance("CZK")));

     }

     public static Convertor createUSDtoUSD()

     {

         return (ConvertorFactory.getConvertor(Currency.getInstance("USD"), Currency.getInstance("USD")));

     }

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

      * with it.

      */

     public void testCurrencyCZKUSD() throws Exception {

         Convertor  c = createCZKtoUSD();

         BigDecimal result;

         // convert $5 to CZK using c:

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

         result = c.convertFrom(BigDecimal.valueOf(5));

         assertEquals(new BigDecimal("85.00"), result);

         // convert $8 to CZK

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

         result = c.convertFrom(BigDecimal.valueOf(8));

         assertEquals(new BigDecimal("136.00"), result);

         // convert 1003CZK to USD

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

         result = c.convertTo(BigDecimal.valueOf(1003));

         assertEquals(new BigDecimal("59.00"), result);

     }

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

      * with it.

      */

     public void testCurrencySKKCZK() throws Exception {

         Convertor c = createSKKtoCZK();

         BigDecimal result;

         // convert 16CZK using c:

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

         result = c.convertFrom(BigDecimal.valueOf(16));

         assertEquals(new BigDecimal("20.00"), result);

         // convert 500SKK to CZK

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

         result = c.convertTo(BigDecimal.valueOf(500));

         assertEquals(new BigDecimal("400.00"), result);

    }

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

      * with it.

      */

     public void testCurrencyUSDUSD() throws Exception {

         Convertor c = createUSDtoUSD();

         BigDecimal result;

         // convert 1USD using c:

         // assertEquals("Result is 1 USD");

         result = c.convertFrom(BigDecimal.valueOf(1));

         assertEquals(new BigDecimal("1.00"), result);

         // convert 500USD to USD

         // assertEquals("Result is 500 USD");

         result = c.convertTo(BigDecimal.valueOf(500));

         assertEquals(new BigDecimal("500.00"), result);

    }

 }