function let(Currency $currency)
{
Locale::setDefault('en-US');
$currency->__toString()->willReturn('USD');
$currency->getFractionDigits()->willReturn(2);
$this->beConstructedWith(1.234, $currency);
}
/**
* @param string|null $locale if null, defaults to Locale::getDefault
* @return string
*/
public function getFormattedAmount($locale = null)
{
if ($locale === null) {
$locale = Locale::getDefault();
}
$numberFormatter = new NumberFormatter($locale, NumberFormatter::DECIMAL);
$fractionDigits = $this->currency->getFractionDigits();
$numberFormatter->setAttribute(NumberFormatter::MIN_FRACTION_DIGITS, $fractionDigits);
$numberFormatter->setAttribute(NumberFormatter::MAX_FRACTION_DIGITS, $fractionDigits);
return $numberFormatter->format($this->amount);
}