public void testConvert() throws Exception {
expect(mockExchangeDas.findExchange(ENTITY_ID, 200))
.andReturn(_mockCurrencyExchangeDTO("0.98"))
.once();
expect(mockExchangeDas.findExchange(ENTITY_ID, 201))
.andReturn(_mockCurrencyExchangeDTO("1.20"))
.once();
replay(mockCurrencyDas, mockExchangeDas);
// convert $20.00 CAD to AUD - approximated conversion rates ;)
CurrencyBL bl = new CurrencyBL(mockCurrencyDas, mockExchangeDas);
BigDecimal amount = bl.convert(200, 201, new BigDecimal("20.00"), ENTITY_ID);
verify(mockCurrencyDas, mockExchangeDas);
assertEquals(new BigDecimal("24.48979"), amount);
}
public void testConvertRepeatingDecimal() throws Exception {
expect(mockExchangeDas.findExchange(ENTITY_ID, 200))
.andReturn(_mockCurrencyExchangeDTO("3.00"))
.once();
expect(mockExchangeDas.findExchange(ENTITY_ID, 201))
.andReturn(_mockCurrencyExchangeDTO("1.00"))
.once();
replay(mockCurrencyDas, mockExchangeDas);
/*
Pivot calculation will result in a value of 3.333333~ repeating, which will
cause an ArithmeticException if not handled correctly.
10.00 / 3.00 = 3.333333~
*/
CurrencyBL bl = new CurrencyBL(mockCurrencyDas, mockExchangeDas);
BigDecimal amount = bl.convert(200, 201, new BigDecimal("10.00"), ENTITY_ID);
verify(mockCurrencyDas, mockExchangeDas);
assertEquals(new BigDecimal("3.33"), amount);
}
private CurrencyExchangeDTO findExchange(Integer entityId, Integer currencyId, Date toDate)
throws SessionInternalError {
// check for system currency exchange
if (SYSTEM_CURRENCY_ID.equals(currencyId)) {
return new CurrencyExchangeDTO(
0, currency, entityId, SYSTEM_CURRENCY_RATE_DEFAULT, new Date());
}
LOG.debug("Get exchange rate for %s for entity %s for date %s", currencyId, entityId, toDate);
CurrencyExchangeDTO exchange = exchangeDas.getExchangeRateForDate(entityId, currencyId, toDate);
if (exchange == null) {
// this entity doesn't have this exchange defined
// 0 is the default, don't try to use null, it won't work
exchange = exchangeDas.findExchange(SYSTEM_RATE_ENTITY_ID, currencyId);
if (exchange == null) {
throw new SessionInternalError(
"Currency " + currencyId + " doesn't have a default exchange");
}
}
LOG.debug("Exchange found %s", exchange.getId());
return exchange;
}