Money\MoneyTest::testDifferentCurrenciesCannotBeSubtracted PHP 메소드

    public function testDifferentCurrenciesCannotBeSubtracted()
    {
        $m1 = Money::fromAmount('100', Currency::fromCode('EUR'));
        $m2 = Money::fromAmount('100', Currency::fromCode('USD'));
        $m1->subtract($m2);
    }