MAGETWO-44990: \Magento\Payment\Model\Method\Adapter::assignData extension point doesn't allow to import payment-method specific data

- Fixed integration test

Author: dkvashninbay

dev/tests/integration/testsuite/Magento/Paypal/Model/Payment/Method/Billing/AbstractAgreementTest.php

@@ -58,7 +58,11 @@ public function testAssignData()
         $billingAgreement = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
             'Magento\Paypal\Model\ResourceModel\Billing\Agreement\Collection'
         )->getFirstItem();
-        $data = [AbstractAgreement::TRANSPORT_BILLING_AGREEMENT_ID => $billingAgreement->getId()];
+        $data = new \Magento\Framework\DataObject(
+            [
+                AbstractAgreement::TRANSPORT_BILLING_AGREEMENT_ID => $billingAgreement->getId()
+            ]
+        );
         $this->_model->assignData($data);
         $this->assertEquals(
             'REF-ID-TEST-678',