Omnipay\Common\CreditCard::getBillingAddress1 PHP Method

    public function getBillingAddress1()
    {
        return $this->getParameter('billingAddress1');
    }

 public function testAddress1()
 {
     $this->card->setAddress1('31 Spooner St');
     $this->assertEquals('31 Spooner St', $this->card->getAddress1());
     $this->assertEquals('31 Spooner St', $this->card->getBillingAddress1());
     $this->assertEquals('31 Spooner St', $this->card->getShippingAddress1());
 }