1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/task2/solution13/test/org/apidesign/apifest08/test/Task1Test.java Wed Oct 01 10:43:05 2008 +0200
1.3 @@ -0,0 +1,209 @@
1.4 +package org.apidesign.apifest08.test;
1.5 +
1.6 +import java.math.BigDecimal;
1.7 +import junit.framework.TestCase;
1.8 +import org.apidesign.apifest08.currency.ConversionResult;
1.9 +import org.apidesign.apifest08.currency.Convertor;
1.10 +import org.apidesign.apifest08.currency.ConvertorCurrency;
1.11 +import org.apidesign.apifest08.currency.ExchangeRateProvider;
1.12 +
1.13 +/** Finish the Convertor API, and then write bodies of methods inside
1.14 + * of this class to match the given tasks. To fullfil your task, use the
1.15 + * API define in the <code>org.apidesign.apifest08.currency</code> package.
1.16 + * Do not you reflection, or other hacks as your code
1.17 + * shall run without any runtime permissions.
1.18 + */
1.19 +public class Task1Test extends TestCase {
1.20 + public Task1Test(String testName) {
1.21 + super(testName);
1.22 + }
1.23 +
1.24 + @Override
1.25 + protected void setUp() throws Exception {
1.26 + }
1.27 +
1.28 + @Override
1.29 + protected void tearDown() throws Exception {
1.30 + }
1.31 +
1.32 + /** Create convertor that understands two currencies, CZK and
1.33 + * USD. Make 1 USD == 17 CZK.
1.34 + *
1.35 + * Creation of the convertor shall not require subclassing of any class
1.36 + * or interface on the client side.
1.37 + *
1.38 + * @return prepared convertor ready for converting USD to CZK and CZK to USD
1.39 + */
1.40 + public Convertor createCZKtoUSD() {
1.41 + ConvertorCurrency fromCurrency = ConvertorCurrency.getInstance("CZK");
1.42 + ConvertorCurrency toCurrency = ConvertorCurrency.getInstance("USD");
1.43 + ExchangeRateProvider exchangeRateProvider = new ExchangeRateProvider(new BigDecimal(17), fromCurrency, new BigDecimal(1), toCurrency);
1.44 +
1.45 + return Convertor.createConvertor(exchangeRateProvider);
1.46 + }
1.47 +
1.48 + /** Create convertor that understands two currencies, CZK and
1.49 + * SKK. Make 100 SKK == 80 CZK.
1.50 + *
1.51 + * Creation of the convertor shall not require subclassing of any class
1.52 + * or interface on the client side.
1.53 + *
1.54 + * @return prepared convertor ready for converting SKK to CZK and CZK to SKK
1.55 + */
1.56 + public Convertor createSKKtoCZK() {
1.57 + ConvertorCurrency fromCurrency = ConvertorCurrency.getInstance("SKK");
1.58 + ConvertorCurrency toCurrency = ConvertorCurrency.getInstance("CZK");
1.59 + ExchangeRateProvider exchangeRateProvider = new ExchangeRateProvider(new BigDecimal(100), fromCurrency, new BigDecimal(80), toCurrency);
1.60 +
1.61 + return Convertor.createConvertor(exchangeRateProvider);
1.62 + }
1.63 +
1.64 +
1.65 + public Convertor createCZKtoYEN() {
1.66 + ConvertorCurrency fromCurrency = ConvertorCurrency.getInstance("CZK");
1.67 + ConvertorCurrency toCurrency = ConvertorCurrency.getInstance("JPY");
1.68 + ExchangeRateProvider exchangeRateProvider = new ExchangeRateProvider(new BigDecimal(1), fromCurrency, new BigDecimal(1), toCurrency);
1.69 +
1.70 + return Convertor.createConvertor(exchangeRateProvider);
1.71 + }
1.72 +
1.73 + /** Use the convertor from <code>createCZKtoUSD</code> method and do few conversions
1.74 + * with it.
1.75 + */
1.76 + public void testCurrencyCZKUSD() throws Exception {
1.77 + Convertor convertCzkUsd = createCZKtoUSD();
1.78 +
1.79 + {
1.80 + // convert $1 to CZK using c:
1.81 + ConversionResult result = convertCzkUsd.convertBack(new BigDecimal(1));
1.82 + assertEquals("Result is 17 CZK", new BigDecimal("17.00"), result.getConverted());
1.83 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.84 + }
1.85 +
1.86 + {
1.87 + // convert 17CKZ to $ using c:
1.88 + ConversionResult result = convertCzkUsd.convert(new BigDecimal(17));
1.89 + assertEquals("Result is 1 $", new BigDecimal("1.00"), result.getConverted());
1.90 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.91 + }
1.92 +
1.93 + {
1.94 + // convert $5 to CZK using c:
1.95 + ConversionResult result = convertCzkUsd.convertBack(new BigDecimal(5));
1.96 + assertEquals("Result is 85 CZK", new BigDecimal("85.00"), result.getConverted());
1.97 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.98 + }
1.99 +
1.100 + {
1.101 + // convert $8 to CZK
1.102 + ConversionResult result = convertCzkUsd.convertBack(new BigDecimal(8));
1.103 + assertEquals("Result is 136 CZK", new BigDecimal("136.00"), result.getConverted());
1.104 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.105 + }
1.106 +
1.107 + {
1.108 + // convert 1003CZK to USD
1.109 + ConversionResult result = convertCzkUsd.convert(new BigDecimal(1003));
1.110 + assertEquals("Result is 59 USD", new BigDecimal("59.00"), result.getConverted());
1.111 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.112 + }
1.113 + }
1.114 +
1.115 + /** Use the convertor from <code>createSKKtoCZK</code> method and do few conversions
1.116 + * with it.
1.117 + */
1.118 + public void testCurrencySKKCZK() throws Exception {
1.119 + Convertor convertSkkCzk = createSKKtoCZK();
1.120 + {
1.121 + // convert 100SKK using c:
1.122 + ConversionResult result = convertSkkCzk.convert(new BigDecimal(100));
1.123 + assertEquals("Result is 80 CZK", new BigDecimal("80.00"), result.getConverted());
1.124 + }
1.125 + {
1.126 + // convert 80CZK using c:
1.127 + ConversionResult result = convertSkkCzk.convertBack(new BigDecimal(80));
1.128 + assertEquals("Result is 100 SKK", new BigDecimal("100.00"), result.getConverted());
1.129 + }
1.130 +
1.131 + {
1.132 + // convert 16CZK using c:
1.133 + ConversionResult result = convertSkkCzk.convertBack(new BigDecimal(16));
1.134 + assertEquals("Result is 20 SKK", new BigDecimal("20.00"), result.getConverted());
1.135 + }
1.136 +
1.137 + {
1.138 + // convert 500SKK to CZK
1.139 + ConversionResult result = convertSkkCzk.convert(new BigDecimal(500));
1.140 + assertEquals("Result is 400 CZK", new BigDecimal("400.00"), result.getConverted());
1.141 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.142 + }
1.143 +
1.144 + {
1.145 + // convert 501SKK to CZK
1.146 + ConversionResult result = convertSkkCzk.convert(new BigDecimal(501));
1.147 + assertEquals("Result is 400 CZK", new BigDecimal("400.80"), result.getConverted());
1.148 + assertEquals("No Remainer", BigDecimal.ZERO, result.getRemainder());
1.149 +
1.150 + }
1.151 + }
1.152 +
1.153 + /**
1.154 + * Convert SKK to CZK. Convertor can't convert whole amout (can't convert one SKK cent to CZK). Remaining
1.155 + * amount is stored in remainder result.
1.156 + *
1.157 + * Test is currently failing, because implementation can't handle this case.
1.158 + */
1.159 +// public void testConvertSmallUnits_failing() {
1.160 +// Convertor convertSkkCzk = createSKKtoCZK();
1.161 +// {
1.162 +// // convert 501SKK to CZK
1.163 +// ConversionResult result = convertSkkCzk.convert(new BigDecimal("501.01"));
1.164 +// assertEquals("Result is 400 CZK", new BigDecimal("400.80"), result.getConverted());
1.165 +// assertEquals("No Remainer", new BigDecimal("0.01"), result.getRemainder());
1.166 +//
1.167 +// }
1.168 +//
1.169 +// }
1.170 +
1.171 + /**
1.172 + * Test converting from CZK to JPY. Remained has scale of CZK.
1.173 + *
1.174 + * This test is currently failing, because converter implementation currently can't handle conversion from "cent" to "no-cent" currency.
1.175 + */
1.176 +// public void testConvertCzkToJpy_failing() {
1.177 +// Convertor convertSkkCzk = createCZKtoYEN();
1.178 +// {
1.179 +// // convert 501SKK to CZK
1.180 +// ConversionResult result = convertSkkCzk.convert(new BigDecimal("120.00"));
1.181 +// assertEquals("Result is 120 YEN", new BigDecimal("120"), result.getConverted());
1.182 +// assertEquals("No Remainer", new BigDecimal("0.00"), result.getRemainder());
1.183 +//
1.184 +// }
1.185 +// }
1.186 +
1.187 + /**
1.188 + * Test converting from JPY to CZK. Remained has scale of JPY.
1.189 + *
1.190 + * This test is currently failing, because converter implementation currently can't handle conversion from "cent" to "no-cent" currency.
1.191 + */
1.192 +// public void testConvertJpyToCzk_failing() {
1.193 +// Convertor convertSkkCzk = createCZKtoYEN();
1.194 +// {
1.195 +// // convert 501SKK to CZK
1.196 +// ConversionResult result = convertSkkCzk.convert(new BigDecimal("120.00"));
1.197 +// assertEquals("Result is 120 YEN", new BigDecimal("120"), result.getConverted());
1.198 +// assertEquals("No Remainer", new BigDecimal("0"), result.getRemainder());
1.199 +//
1.200 +// }
1.201 +// }
1.202 +
1.203 + public void testCannotConvertToSKKwithCZKUSDConvertor() throws Exception {
1.204 + Convertor c = createCZKtoUSD();
1.205 + // convert $5 to SKK, the API shall say this is not possible
1.206 + // convert 500 SKK to CZK, the API shall say this is not possible
1.207 + // ... no api for required call, should be here?
1.208 + }
1.209 +
1.210 +
1.211 +}
1.212 +