ACPT-752: Improve performance of processing segments validation

- Refactor and expand integration tests coverage;

Author: adifucan

dev/tests/integration/testsuite/Magento/Newsletter/_files/three_subscribers.php

@@ -5,15 +5,36 @@
  */
 declare(strict_types=1);
 
-use Magento\Newsletter\Model\SubscriberFactory;
+use Magento\Customer\Api\CustomerRepositoryInterface;
+use Magento\Newsletter\Model\Subscriber;
 use Magento\TestFramework\Helper\Bootstrap;
 use Magento\TestFramework\Workaround\Override\Fixture\Resolver;
 
 Resolver::getInstance()->requireDataFixture('Magento/Customer/_files/three_customers.php');
 
 $objectManager = Bootstrap::getObjectManager();
-$subscriberFactory = $objectManager->get(SubscriberFactory::class);
+$customerRepository = $objectManager->create(CustomerRepositoryInterface::class);
 
-$subscriberFactory->create()->subscribe('[email protected]');
-$subscriberFactory->create()->subscribe('[email protected]');
-$subscriberFactory->create()->subscribe('[email protected]');
+$customer1 = $customerRepository->get('[email protected]');
+$subscriber1 = $objectManager->create(Subscriber::class);
+$subscriber1->setStoreId($customer1->getStoreId())
+    ->setCustomerId($customer1->getId())
+    ->setSubscriberEmail('[email protected]')
+    ->setSubscriberStatus(Subscriber::STATUS_SUBSCRIBED)
+    ->save();
+
+$customer2 = $customerRepository->get('[email protected]');
+$subscriber2 = $objectManager->create(Subscriber::class);
+$subscriber2->setStoreId($customer2->getStoreId())
+    ->setCustomerId($customer2->getId())
+    ->setSubscriberEmail('[email protected]')
+    ->setSubscriberStatus(Subscriber::STATUS_SUBSCRIBED)
+    ->save();
+
+$customer3 = $customerRepository->get('[email protected]');
+$subscriber3 = $objectManager->create(Subscriber::class);
+$subscriber3->setStoreId($customer3->getStoreId())
+    ->setCustomerId($customer3->getId())
+    ->setSubscriberEmail('[email protected]')
+    ->setSubscriberStatus(Subscriber::STATUS_SUBSCRIBED)
+    ->save();

dev/tests/integration/testsuite/Magento/Newsletter/_files/three_subscribers_rollback.php

@@ -5,6 +5,14 @@
  */
 declare(strict_types=1);
 
+use Magento\TestFramework\Helper\Bootstrap;
 use Magento\TestFramework\Workaround\Override\Fixture\Resolver;
 
 Resolver::getInstance()->requireDataFixture('Magento/Customer/_files/three_customers_rollback.php');
+
+$objectManager = Bootstrap::getObjectManager();
+$subscriberCollection = $objectManager->get(\Magento\Newsletter\Model\ResourceModel\Subscriber\Collection::class);
+foreach ($subscriberCollection as $subscriber) {
+    /** @var Magento\Newsletter\Model\Subscriber $subscriber */
+    $subscriber->delete();
+}