/**
* @covers ::process
* @covers ::processCallback
*/
public function testProcess()
{
$cache_contexts = Cache::mergeContexts(['baz', 'qux']);
$cache_tags = Cache::mergeTags(['foo', 'bar']);
$currency_code_from = 'EUR';
$currency_code_to = 'NLG';
$rate = '2.20371';
$exchange_rate_provider_id = 'foo_bar';
$exchange_rate = new ExchangeRate($currency_code_from, $currency_code_to, $rate, $exchange_rate_provider_id);
$exchange_rate->addCacheContexts($cache_contexts);
$exchange_rate->addCacheTags($cache_tags);
$this->input->expects($this->any())->method('parseAmount')->will($this->returnArgument(0));
$this->exchangeRateProvider->expects($this->any())->method('load')->with($currency_code_from, $currency_code_to)->willReturn($exchange_rate);
$langcode = $this->randomMachineName(2);
$tokens_valid = ['[currency:EUR:NLG]' => '2.20371', '[currency:EUR:NLG:1]' => '2.20371', '[currency:EUR:NLG:2]' => '4.40742'];
$tokens_invalid = ['[currency]', '[currency:]', '[currency::]', '[currency:EUR]', '[currency:EUR:123]', '[currency:123:EUR]', '[currency:123]'];
foreach ($tokens_valid as $token => $replacement) {
$result = $this->sut->process($token, $langcode);
$this->assertInstanceOf(FilterProcessResult::class, $result);
$this->assertSame($replacement, $result->getProcessedText());
$this->assertSame($cache_contexts, $result->getCacheContexts());
$this->assertSame($cache_tags, $result->getCacheTags());
}
foreach ($tokens_invalid as $token) {
$result = $this->sut->process($token, $langcode);
$this->assertInstanceOf(FilterProcessResult::class, $result);
$this->assertSame($token, $result->getProcessedText());
$this->assertEmpty($result->getCacheContexts());
$this->assertEmpty($result->getCacheTags());
}
}
/**
* Implements preg_replace_callback() callback.
*
* @see self::process()
*/
function processCallback(array $matches)
{
$currency_code_from = $matches[1];
$currency_code_to = $matches[2];
$amount = str_replace(':', '', $matches[3]);
if (strlen($amount) !== 0) {
$amount = $this->input->parseAmount($amount);
// The amount is invalid, so return the token.
if (!$amount) {
return $matches[0];
}
} else {
$amount = 1;
}
$exchange_rate = $this->exchangeRateProvider->load($currency_code_from, $currency_code_to);
$this->currentFilterProcessResult->addCacheableDependency($exchange_rate);
if ($exchange_rate) {
return bcmul($amount, $exchange_rate->getRate(), 6);
}
// No exchange rate could be loaded, so return the token.
return $matches[0];
}
