PayPal\Test\Api\InvoiceTest::testSerializationDeserialization PHP Method

    public function testSerializationDeserialization()
    {
        $obj = new Invoice(self::getJson());
        $this->assertNotNull($obj);
        $this->assertNotNull($obj->getId());
        $this->assertNotNull($obj->getNumber());
        $this->assertNotNull($obj->getTemplateId());
        $this->assertNotNull($obj->getUri());
        $this->assertNotNull($obj->getStatus());
        $this->assertNotNull($obj->getMerchantInfo());
        $this->assertNotNull($obj->getBillingInfo());
        $this->assertNotNull($obj->getCcInfo());
        $this->assertNotNull($obj->getShippingInfo());
        $this->assertNotNull($obj->getItems());
        $this->assertNotNull($obj->getInvoiceDate());
        $this->assertNotNull($obj->getPaymentTerm());
        $this->assertNotNull($obj->getReference());
        $this->assertNotNull($obj->getDiscount());
        $this->assertNotNull($obj->getShippingCost());
        $this->assertNotNull($obj->getCustom());
        $this->assertNotNull($obj->getAllowPartialPayment());
        $this->assertNotNull($obj->getMinimumAmountDue());
        $this->assertNotNull($obj->getTaxCalculatedAfterDiscount());
        $this->assertNotNull($obj->getTaxInclusive());
        $this->assertNotNull($obj->getTerms());
        $this->assertNotNull($obj->getNote());
        $this->assertNotNull($obj->getMerchantMemo());
        $this->assertNotNull($obj->getLogoUrl());
        $this->assertNotNull($obj->getTotalAmount());
        $this->assertNotNull($obj->getPayments());
        $this->assertNotNull($obj->getRefunds());
        $this->assertNotNull($obj->getMetadata());
        $this->assertNotNull($obj->getAdditionalData());
        $this->assertNotNull($obj->getPaidAmount());
        $this->assertNotNull($obj->getRefundedAmount());
        $this->assertNotNull($obj->getAttachments());
        $this->assertEquals(self::getJson(), $obj->toJson());
        return $obj;
    }