/**
* @param string $sourceCode
* @param string $targetCode
*
* @return ExchangeRateInterface
*/
private function getExchangeRate($sourceCode, $targetCode)
{
$sourceTargetIndex = $this->createIndex($sourceCode, $targetCode);
if (isset($this->cache[$sourceTargetIndex])) {
return $this->cache[$sourceTargetIndex];
}
$targetSourceIndex = $this->createIndex($targetCode, $sourceCode);
if (isset($this->cache[$targetSourceIndex])) {
return $this->cache[$targetSourceIndex];
}
return $this->cache[$sourceTargetIndex] = $this->exchangeRateRepository->findOneWithCurrencyPair($sourceCode, $targetCode);
}
/**
* @param ExchangeRateInterface $exchangeRate
*/
private function saveExchangeRate(ExchangeRateInterface $exchangeRate)
{
$this->exchangeRateRepository->add($exchangeRate);
$this->sharedStorage->set('exchange_rate', $exchangeRate);
}
function it_return_given_value_if_both_currencie_in_currency_pair_are_the_same(ExchangeRateRepositoryInterface $exchangeRateRepository)
{
$exchangeRateRepository->findOneWithCurrencyPair('GBP', 'GBP')->willReturn(null);
$this->convert(666, 'GBP', 'GBP')->shouldReturn(666);
}
/**
* @param CurrencyInterface $baseCurrency
* @param CurrencyInterface $targetCurrency
*
* @return bool
*/
private function isCurrencyPairUnique(CurrencyInterface $baseCurrency, CurrencyInterface $targetCurrency)
{
$exchangeRate = $this->exchangeRateRepository->findOneWithCurrencyPair($baseCurrency->getCode(), $targetCurrency->getCode());
return null === $exchangeRate;
}