1.1 --- a/task1/solution04/test/org/apidesign/apifest08/test/Task1Test.java Sun Sep 28 14:12:38 2008 +0200
1.2 +++ b/task1/solution04/test/org/apidesign/apifest08/test/Task1Test.java Tue Sep 30 11:50:09 2008 +0200
1.3 @@ -1,10 +1,13 @@
1.4 package org.apidesign.apifest08.test;
1.5
1.6 +
1.7 import java.math.BigDecimal;
1.8 import java.util.Currency;
1.9 import junit.framework.TestCase;
1.10 import org.apidesign.apifest08.currency.Convertor;
1.11 import org.apidesign.apifest08.currency.ConvertorFactory;
1.12 +import org.apidesign.apifest08.currency.InvalidConversionException;
1.13 +
1.14
1.15 /** Finish the Convertor API, and then write bodies of methods inside
1.16 * of this class to match the given tasks. To fullfil your task, use the
1.17 @@ -13,6 +16,18 @@
1.18 * shall run without any runtime permissions.
1.19 */
1.20 public class Task1Test extends TestCase {
1.21 +
1.22 + private final static Currency CZK;
1.23 + private final static Currency SKK;
1.24 + private final static Currency USD;
1.25 +
1.26 + static
1.27 + {
1.28 + CZK = Currency.getInstance("CZK");
1.29 + SKK = Currency.getInstance("SKK");
1.30 + USD = Currency.getInstance("USD");
1.31 + }
1.32 +
1.33 public Task1Test(String testName) {
1.34 super(testName);
1.35 }
1.36 @@ -35,7 +50,7 @@
1.37 */
1.38 public static Convertor createCZKtoUSD()
1.39 {
1.40 - return (ConvertorFactory.getConvertor("CZK", "USD"));
1.41 + return (ConvertorFactory.getConvertor("CZK", BigDecimal.valueOf(17.0), "USD", BigDecimal.valueOf(1)));
1.42 }
1.43
1.44 /** Create convertor that understands two currencies, CZK and
1.45 @@ -48,12 +63,7 @@
1.46 */
1.47 public static Convertor createSKKtoCZK()
1.48 {
1.49 - return (ConvertorFactory.getConvertor(Currency.getInstance("SKK"), Currency.getInstance("CZK")));
1.50 - }
1.51 -
1.52 - public static Convertor createUSDtoUSD()
1.53 - {
1.54 - return (ConvertorFactory.getConvertor(Currency.getInstance("USD"), Currency.getInstance("USD")));
1.55 + return (ConvertorFactory.getConvertor(Currency.getInstance("SKK"), BigDecimal.valueOf(100), Currency.getInstance("CZK"), BigDecimal.valueOf(80)));
1.56 }
1.57
1.58 /** Use the convertor from <code>createCZKtoUSD</code> method and do few conversions
1.59 @@ -65,17 +75,17 @@
1.60
1.61 // convert $5 to CZK using c:
1.62 // assertEquals("Result is 85 CZK");
1.63 - result = c.convertFrom(BigDecimal.valueOf(5));
1.64 + result = c.convert(USD, CZK, BigDecimal.valueOf(5));
1.65 assertEquals(new BigDecimal("85.00"), result);
1.66
1.67 // convert $8 to CZK
1.68 // assertEquals("Result is 136 CZK");
1.69 - result = c.convertFrom(BigDecimal.valueOf(8));
1.70 + result = c.convert(USD, CZK, BigDecimal.valueOf(8));
1.71 assertEquals(new BigDecimal("136.00"), result);
1.72
1.73 // convert 1003CZK to USD
1.74 // assertEquals("Result is 59 USD");
1.75 - result = c.convertTo(BigDecimal.valueOf(1003));
1.76 + result = c.convert(CZK, USD, BigDecimal.valueOf(1003));
1.77 assertEquals(new BigDecimal("59.00"), result);
1.78 }
1.79
1.80 @@ -88,31 +98,87 @@
1.81
1.82 // convert 16CZK using c:
1.83 // assertEquals("Result is 20 SKK");
1.84 - result = c.convertFrom(BigDecimal.valueOf(16));
1.85 + result = c.convert(CZK, SKK, BigDecimal.valueOf(16));
1.86 assertEquals(new BigDecimal("20.00"), result);
1.87
1.88 // convert 500SKK to CZK
1.89 // assertEquals("Result is 400 CZK");
1.90 - result = c.convertTo(BigDecimal.valueOf(500));
1.91 + result = c.convert(SKK, CZK, BigDecimal.valueOf(500));
1.92 assertEquals(new BigDecimal("400.00"), result);
1.93 }
1.94
1.95 - /** Use the convertor from <code>createSKKtoCZK</code> method and do few conversions
1.96 - * with it.
1.97 + /**
1.98 + * Verify that the CZK to USD convertor knows nothing about SKK.
1.99 */
1.100 - public void testCurrencyUSDUSD() throws Exception {
1.101 - Convertor c = createUSDtoUSD();
1.102 - BigDecimal result;
1.103 + public void testCannotConvertToSKKwithCZKUSDConvertor()
1.104 + throws Exception
1.105 + {
1.106 + Convertor c = createCZKtoUSD();
1.107
1.108 - // convert 1USD using c:
1.109 - // assertEquals("Result is 1 USD");
1.110 - result = c.convertFrom(BigDecimal.valueOf(1));
1.111 - assertEquals(new BigDecimal("1.00"), result);
1.112 -
1.113 - // convert 500USD to USD
1.114 - // assertEquals("Result is 500 USD");
1.115 - result = c.convertTo(BigDecimal.valueOf(500));
1.116 - assertEquals(new BigDecimal("500.00"), result);
1.117 - }
1.118 + try
1.119 + {
1.120 + // convert $5 to SKK, the API shall say this is not possible
1.121 + c.convert(USD, SKK, BigDecimal.valueOf(5));
1.122 + fail("cannot use the CZKtoUSD converter to convert to SKK");
1.123 + }
1.124 + catch(InvalidConversionException ex)
1.125 + {
1.126 + assertEquals("cannot convert to: SKK", ex.getMessage());
1.127 + assertEquals(SKK, ex.getBadCurrency());
1.128 + assertEquals(CZK, ex.getCurrencyA());
1.129 + assertEquals(USD, ex.getCurrencyB());
1.130 + }
1.131 +
1.132 + try
1.133 + {
1.134 + // convert 500 SKK to CZK, the API shall say this is not possible
1.135 + c.convert(SKK, CZK, BigDecimal.valueOf(5));
1.136 + fail("cannot use the CZKtoUSD converter to convert from SKK");
1.137 + }
1.138 + catch(InvalidConversionException ex)
1.139 + {
1.140 + assertEquals("cannot convert from: SKK", ex.getMessage());
1.141 + assertEquals(SKK, ex.getBadCurrency());
1.142 + assertEquals(CZK, ex.getCurrencyA());
1.143 + assertEquals(USD, ex.getCurrencyB());
1.144 + }
1.145 + }
1.146 +
1.147 + /**
1.148 + * Verify that the CZK to SKK convertor knows nothing about USD.
1.149 + */
1.150 + public void testCannotConvertToUSDwithSKKCZKConvertor()
1.151 + throws Exception
1.152 + {
1.153 + Convertor c = createSKKtoCZK();
1.154 +
1.155 + try
1.156 + {
1.157 + // convert $5 to SKK, the API shall say this is not possible
1.158 + c.convert(USD, SKK, BigDecimal.valueOf(5));
1.159 + fail("cannot use the CZKtoUSD converter to convert to SKK");
1.160 + }
1.161 + catch(InvalidConversionException ex)
1.162 + {
1.163 + assertEquals("cannot convert from: USD", ex.getMessage());
1.164 + assertEquals(USD, ex.getBadCurrency());
1.165 + assertEquals(SKK, ex.getCurrencyA());
1.166 + assertEquals(CZK, ex.getCurrencyB());
1.167 + }
1.168 +
1.169 + try
1.170 + {
1.171 + // convert 500 CZK to USD, the API shall say this is not possible
1.172 + c.convert(CZK, USD, BigDecimal.valueOf(500));
1.173 + fail("cannot use the CZKtoUSD converter to convert from SKK");
1.174 + }
1.175 + catch(InvalidConversionException ex)
1.176 + {
1.177 + assertEquals("cannot convert to: USD", ex.getMessage());
1.178 + assertEquals(USD, ex.getBadCurrency());
1.179 + assertEquals(SKK, ex.getCurrencyA());
1.180 + assertEquals(CZK, ex.getCurrencyB());
1.181 + }
1.182 + }
1.183 }
1.184