PopTest\Payment\PaymentTest::testMagicMethods PHP Метод

    public function testMagicMethods()
    {
        $p = new Payment(new Authorize('API_LOGIN_ID', 'TRANS_KEY', Payment::TEST));
        $p->firstName = 'Test';
        $this->assertTrue(isset($p->firstName));
        unset($p->firstName);
        $this->assertNull($p->firstName);
    }