Money\MoneyTest::testMultiplication PHP Метод

    public function testMultiplication()
    {
        $money = Money::fromAmount('100', Currency::fromCode('EUR'));
        $expected1 = Money::fromAmount('200', Currency::fromCode('EUR'));
        $expected2 = Money::fromAmount('101', Currency::fromCode('EUR'));
        $this->assertTrue($money->multiplyBy(2)->equals($expected1));
        $this->assertTrue($money->multiplyBy('1.01')->equals($expected2));
        $this->assertNotSame($money, $money->multiplyBy(2));
    }