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package org.apidesign.apifest08.test;
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import junit.framework.TestCase;
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import org.apidesign.apifest08.currency.Amount;
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import org.apidesign.apifest08.currency.Convertor;
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import org.apidesign.apifest08.currency.ConvertorFactory;
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/** Finish the Convertor API, and then write bodies of methods inside
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* of this class to match the given tasks. To fullfil your task, use the
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* API define in the <code>org.apidesign.apifest08.currency</code> package.
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* Do not you reflection, or other hacks as your code
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* shall run without any runtime permissions.
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*/
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public class Task1Test extends TestCase {
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public Task1Test(String testName) {
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super(testName);
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}
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@Override
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protected void setUp() throws Exception {
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}
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@Override
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protected void tearDown() throws Exception {
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}
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/** Create convertor that understands two currencies, CZK and
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* USD. Make 1 USD == 17 CZK.
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*
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* Creation of the convertor shall not require subclassing of any class
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* or interface on the client side.
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*
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* @return prepared convertor ready for converting USD to CZK and CZK to USD
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*/
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public static Convertor createCZKtoUSD() {
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return ConvertorFactory.createConvertor(17);
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}
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/** Create convertor that understands two currencies, CZK and
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* SKK. Make 100 SKK == 80 CZK.
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*
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* Creation of the convertor shall not require subclassing of any class
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* or interface on the client side.
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*
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* @return prepared convertor ready for converting SKK to CZK and CZK to SKK
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*/
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public static Convertor createSKKtoCZK() {
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return ConvertorFactory.createConvertor(0.8);
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}
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/** Use the convertor from <code>createCZKtoUSD</code> method and do few conversions
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* with it.
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*/
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public void testCurrencyCZKUSD() throws Exception {
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Convertor c = createCZKtoUSD();
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// convert $5 to CZK using c:
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assertEquals("Result is 85 CZK", 85l, c.convert(new Amount(5)).getAmount());
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// convert $8 to CZK
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assertEquals("Result is 136 CZK", 136l, c.convert(new Amount(8)).getAmount());
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// convert 1003CZK to USD
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assertEquals("Result is 136 CZK", 59l, c.convertBack(new Amount(1003)).getAmount());
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// assertEquals("Result is 59 USD");
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}
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/** Use the convertor from <code>createSKKtoCZK</code> method and do few conversions
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* with it.
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*/
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public void testCurrencySKKCZK() throws Exception {
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Convertor c = createSKKtoCZK();
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// convert 16CZK using c:
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assertEquals("Result is 20 SKK", 20l, c.convertBack(new Amount(16)).getAmount());
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// convert 500SKK to CZK
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assertEquals("Result is 400 CZK", 400l, c.convert(new Amount(500)).getAmount());
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}
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/** Use the convertor from <code>createSKKtoCZK</code> method and do few conversions
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* with it.
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*/
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public void testCurrencySKKCZKwithPences() throws Exception {
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Convertor c = createSKKtoCZK();
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// convert 16CZK 16h using c:
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assertEquals("Result is 20 SKK 20h", new Amount(20, 20), c.convertBack(new Amount(16, 16)));
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// convert 500SKK 80h to CZK
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assertEquals("Result is 400 CZK 64h", new Amount(400, 64), c.convert(new Amount(500, 80)));
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// convert 400CZK 80h to SKK
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assertEquals("Result is 501 CZK", new Amount(501), c.convertBack(new Amount(400, 80)));
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}
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public void testNegativeSKKCZ() throws Exception{
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Convertor c = createSKKtoCZK();
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// convert -16CZK using c:
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assertEquals("Result is -20", new Amount(-20), c.convertBack(new Amount(-16)));
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// convert -500SKK 80h to CZK
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assertEquals("Result is -400CZK 64h", new Amount(-400, 64), c.convert(new Amount(-500, 80)));
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}
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}
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