/** * @test */ public function itShouldReturnAnArrayOfCurrencyCodes() { $this->assertNotEmpty(Currency::availableCurrencyCodes()); }
/** * @param Currency $currency * * @return float */ private function getRatioFromCurrency(Currency $currency) { $this->calculateRatesBasedOnUSDollars(); return (double) $this->ratesData[$currency->code()]; }