Money\MoneyTest::testAddition PHP 메소드

    public function testAddition()
    {
        $m1 = Money::fromAmount('100', Currency::fromCode('EUR'));
        $m2 = Money::fromAmount('100', Currency::fromCode('EUR'));
        $sum = $m1->add($m2);
        $expected = Money::fromAmount('200', Currency::fromCode('EUR'));
        $this->assertTrue($sum->equals($expected));
        // Should return a new instance
        $this->assertNotSame($sum, $m1);
        $this->assertNotSame($sum, $m2);
    }