1.1 --- a/task3/solution04/test/org/apidesign/apifest08/test/Task3Test.java Tue Oct 07 11:19:36 2008 +0200
1.2 +++ b/task3/solution04/test/org/apidesign/apifest08/test/Task3Test.java Fri Oct 10 22:05:15 2008 +0200
1.3 @@ -1,7 +1,11 @@
1.4 package org.apidesign.apifest08.test;
1.5
1.6 +import java.math.BigDecimal;
1.7 +import java.util.Currency;
1.8 import junit.framework.TestCase;
1.9 import org.apidesign.apifest08.currency.Convertor;
1.10 +import org.apidesign.apifest08.currency.InvalidConversionException;
1.11 +import org.apidesign.apifest08.currency.OnlineConvertor;
1.12
1.13 /** The exchange rates are not always the same. They are changing. Day by day,
1.14 * hour by hour, minute by minute. For every bank it is important to always
1.15 @@ -15,17 +19,33 @@
1.16 * he does not know how the whole system looks and how the convertor is supposed
1.17 * to be used.
1.18 */
1.19 -public class Task3Test extends TestCase {
1.20 - public Task3Test(String testName) {
1.21 +public class Task3Test
1.22 + extends TestCase
1.23 +{
1.24 + private final static Currency CZK;
1.25 + private final static Currency SKK;
1.26 + private final static Currency USD;
1.27 +
1.28 + static
1.29 + {
1.30 + CZK = Currency.getInstance("CZK");
1.31 + SKK = Currency.getInstance("SKK");
1.32 + USD = Currency.getInstance("USD");
1.33 + }
1.34 +
1.35 + public Task3Test(String testName)
1.36 + {
1.37 super(testName);
1.38 }
1.39
1.40 @Override
1.41 - protected void setUp() throws Exception {
1.42 + protected void setUp() throws Exception
1.43 + {
1.44 }
1.45
1.46 @Override
1.47 - protected void tearDown() throws Exception {
1.48 + protected void tearDown() throws Exception
1.49 + {
1.50 }
1.51
1.52 // Backward compatibly enhance your existing API to support following
1.53 @@ -41,8 +61,21 @@
1.54 * until you reach 1USD = 16CZK
1.55 *
1.56 * @return new instance of "online" USD and CZK convertor starting with rate 1USD = 16CZK
1.57 + * @throws InvalidConversionException
1.58 */
1.59 - public static Convertor createOnlineCZKUSDConvertor() {
1.60 + public static Convertor createOnlineCZKUSDConvertor()
1.61 + throws InvalidConversionException
1.62 + {
1.63 + final Convertor convertor;
1.64 +
1.65 + convertor = new OnlineConvertor(USD,
1.66 + CZK,
1.67 + new TestExchangeRateFinder(new BigDecimal("15.00"),
1.68 + new BigDecimal("16.00"),
1.69 + new BigDecimal("16.00"),
1.70 + new BigDecimal("0.01"),
1.71 + new BigDecimal("-0.01")));
1.72 +
1.73 // initial rate: 1USD = 16CZK
1.74 // 2nd query 1USD = 15.99CZK
1.75 // 3rd query 1USD = 15.98CZK
1.76 @@ -51,10 +84,12 @@
1.77 // then 1USD = 15.02CZK
1.78 // and so on and on up to 1USD = 16CZK
1.79 // and then another round to 15, etc.
1.80 - return null;
1.81 + return convertor;
1.82 }
1.83
1.84 - public void testFewQueriesForOnlineConvertor() {
1.85 + public void testFewQueriesForOnlineConvertor()
1.86 + throws InvalidConversionException
1.87 + {
1.88 if (Boolean.getBoolean("ignore.failing")) {
1.89 // implement me!
1.90 return;
1.91 @@ -64,25 +99,37 @@
1.92 doFewQueriesForOnlineConvertor(c);
1.93 }
1.94
1.95 - static void doFewQueriesForOnlineConvertor(Convertor c) {
1.96 + static void doFewQueriesForOnlineConvertor(Convertor c)
1.97 + throws InvalidConversionException
1.98 + {
1.99 + BigDecimal amount;
1.100 +
1.101 // convert $5 to CZK using c:
1.102 //assertEquals("Result is 80 CZK");
1.103 + amount = c.convert(USD, CZK, new BigDecimal("5.00"));
1.104 + assertEquals(new BigDecimal("80.00"), amount);
1.105
1.106 // convert $8 to CZK using c:
1.107 //assertEquals("Result is 127.92 CZK");
1.108 + amount = c.convert(USD, CZK, new BigDecimal("8.00"));
1.109 + assertEquals(new BigDecimal("127.92"), amount);
1.110
1.111 // convert $1 to CZK using c:
1.112 //assertEquals("Result is 15.98 CZK");
1.113 + amount = c.convert(USD, CZK, new BigDecimal("1.00"));
1.114 + assertEquals(new BigDecimal("15.98"), amount);
1.115
1.116 // convert 15.97CZK to USD using c:
1.117 //assertEquals("Result is 1$");
1.118 -
1.119 - fail("Implement me!");
1.120 + amount = c.convert(CZK, USD, new BigDecimal("15.97"));
1.121 + assertEquals(new BigDecimal("1.00"), amount);
1.122 }
1.123
1.124 /** Join the convertors and show they behave sane.
1.125 */
1.126 public void testOnlineConvertorComposition() throws Exception {
1.127 + BigDecimal amount;
1.128 +
1.129 if (Boolean.getBoolean("ignore.failing")) {
1.130 // implement me!
1.131 return;
1.132 @@ -95,9 +142,13 @@
1.133
1.134 // convert 16CZK to SKK using c:
1.135 // assertEquals("Result is 20 SKK");
1.136 -
1.137 + amount = c.convert(CZK, SKK, new BigDecimal("16.00"));
1.138 + assertEquals(new BigDecimal("20.00"), amount);
1.139 +
1.140 // convert 500SKK to CZK using c:
1.141 // assertEquals("Result is 400 CZK");
1.142 + amount = c.convert(SKK, CZK, new BigDecimal("500.00"));
1.143 + assertEquals(new BigDecimal("400.00"), amount);
1.144
1.145 doFewQueriesForOnlineConvertor(c);
1.146 }