1.1 --- a/task4/solution02/test/org/apidesign/apifest08/test/Task4Test.java Fri Oct 17 17:40:14 2008 +0200
1.2 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000
1.3 @@ -1,132 +0,0 @@
1.4 -package org.apidesign.apifest08.test;
1.5 -
1.6 -import java.util.Date;
1.7 -import junit.framework.TestCase;
1.8 -import org.apidesign.apifest08.currency.Convertor;
1.9 -
1.10 -/** The exchange rates are not always the same. They are changing. However
1.11 - * as in order to predict the future, one needs to understand own past. That is
1.12 - * why it is important to know the exchange rate as it was at any time during
1.13 - * the past.
1.14 - * <p>
1.15 - * Today's quest is to enhance the convertor API to deal with dates.
1.16 - * One shall be able to convert a currency at any date. Each currencies rate shall
1.17 - * be associated with a range between two Date objects. In order
1.18 - * to keep compatibility with old API that knew nothing about dates, the
1.19 - * rates associated then are applicable "for eternity". Any use of existing
1.20 - * convert methods that do not accept a Date argument, uses the current
1.21 - * System.currentTimeMillis() as default date.
1.22 - */
1.23 -public class Task4Test extends TestCase {
1.24 - public Task4Test(String testName) {
1.25 - super(testName);
1.26 - }
1.27 -
1.28 - @Override
1.29 - protected void setUp() throws Exception {
1.30 - }
1.31 -
1.32 - @Override
1.33 - protected void tearDown() throws Exception {
1.34 - }
1.35 -
1.36 - // Backward compatibly enhance your existing API to support following
1.37 - // usecases:
1.38 - //
1.39 -
1.40 - /** Takes a convertor with any rates associated and creates new convertor
1.41 - * that returns the same values as the old one for time between from to till.
1.42 - * Otherwise it returns no results. This is just a helper method that
1.43 - * shall call some real one in the API.
1.44 - *
1.45 - * @param old existing convertor
1.46 - * @param from initial date (inclusive)
1.47 - * @param till final date (exclusive)
1.48 - * @return new convertor
1.49 - */
1.50 - public static Convertor limitTo(Convertor old, Date from, Date till) {
1.51 - return null;
1.52 - }
1.53 -
1.54 -
1.55 - public void testCompositionOfLimitedConvertors() throws Exception {
1.56 - if (Boolean.getBoolean("ignore.failing")) {
1.57 - // implement me! then delete this if statement
1.58 - return;
1.59 - }
1.60 -
1.61 - Date d1 = null; // 2008-10-01 0:00 GMT
1.62 - Date d2 = null; // 2008-10-02 0:00 GMT
1.63 - Date d3 = null; // 2008-10-03 0:00 GMT
1.64 -
1.65 - Convertor c = Task2Test.merge(
1.66 - limitTo(Task1Test.createCZKtoUSD(), d1, d2),
1.67 - limitTo(Task1Test.createSKKtoCZK(), d2, d3)
1.68 - );
1.69 -
1.70 - // convert $5 to CZK using c:
1.71 - // cannot convert as no rate is applicable to current date
1.72 -
1.73 - // convert $8 to CZK using c:
1.74 - // cannot convert as no rate is applicable to current date
1.75 -
1.76 - // convert 1003CZK to USD using c:
1.77 - // cannot convert as no rate is applicable to current date
1.78 -
1.79 - // convert 16CZK using c:
1.80 - // cannot convert as no rate is applicable to current date
1.81 -
1.82 - // convert 500SKK to CZK using c:
1.83 - // cannot convert as no rate is applicable to current date
1.84 -
1.85 - // convert $5 to CZK using c at 2008-10-01 6:00 GMT:
1.86 - // assertEquals("Result is 85 CZK");
1.87 -
1.88 - // convert $8 to CZK using c at 2008-10-01 6:00 GMT:
1.89 - // assertEquals("Result is 136 CZK");
1.90 -
1.91 - // convert 1003CZK to USD using c at 2008-10-01 6:00 GMT:
1.92 - // assertEquals("Result is 59 USD");
1.93 -
1.94 - // convert 16CZK using c at 2008-10-02 9:00 GMT:
1.95 - // assertEquals("Result is 20 SKK");
1.96 -
1.97 - // convert 500SKK to CZK using c at 2008-10-02 9:00 GMT:
1.98 - // assertEquals("Result is 400 CZK");
1.99 -
1.100 - // convert 500SKK to CZK using c at 2008-10-01 6:00 GMT:
1.101 - // cannot convert as no rate is applicable to current date
1.102 - }
1.103 -
1.104 - /** Create convertor that understands two currencies, CZK and
1.105 - * SKK. Make 100 SKK == 90 CZK.
1.106 - *
1.107 - * @return prepared convertor ready for converting SKK to CZK and CZK to SKK
1.108 - */
1.109 - public static Convertor createSKKtoCZK2() {
1.110 - return null;
1.111 - }
1.112 -
1.113 - public void testDateConvetorWithTwoDifferentRates() throws Exception {
1.114 - if (Boolean.getBoolean("ignore.failing")) {
1.115 - // implement me! then delete this if statement
1.116 - return;
1.117 - }
1.118 -
1.119 - Date d1 = null; // 2008-10-01 0:00 GMT
1.120 - Date d2 = null; // 2008-10-02 0:00 GMT
1.121 - Date d3 = null; // 2008-10-03 0:00 GMT
1.122 -
1.123 - Convertor c = Task2Test.merge(
1.124 - limitTo(createSKKtoCZK2(), d1, d2),
1.125 - limitTo(Task1Test.createSKKtoCZK(), d2, d3)
1.126 - );
1.127 -
1.128 - // convert 500SKK to CZK using c at 2008-10-02 9:00 GMT:
1.129 - // assertEquals("Result is 400 CZK");
1.130 -
1.131 - // convert 500SKK to CZK using c at 2008-10-01 6:00 GMT:
1.132 - // assertEquals("Result is 450 CZK");
1.133 - }
1.134 -
1.135 -}