MAGETWO-92177: Wrong behavior of the list action

Author: Roman Leshchenko

dev/tests/integration/testsuite/Magento/Customer/Controller/Adminhtml/Index/MassUnsubscribeTest.php

@@ -0,0 +1,69 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+namespace Magento\Customer\Controller\Adminhtml\Index;
+
+use Magento\TestFramework\TestCase\AbstractBackendController;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\Newsletter\Model\SubscriberFactory;
+use Magento\Backend\Model\Session;
+use Magento\Framework\Data\Form\FormKey;
+
+/**
+ * Class MassUnsubscribeTest
+ * @package Magento\Customer\Controller\Adminhtml\Index
+ */
+class MassUnsubscribeTest extends AbstractBackendController
+{
+    /**
+     * Base controller URL
+     *
+     * @var string
+     */
+    protected $baseControllerUrl = 'http://localhost/index.php/backend/customer/index/index';
+
+    protected function tearDown()
+    {
+        /**
+         * Unset customer data
+         */
+        Bootstrap::getObjectManager()->get(Session::class)->setCustomerData(null);
+
+        /**
+         * Unset messages
+         */
+        Bootstrap::getObjectManager()->get(Session::class)->getMessages(true);
+    }
+
+    /**
+     * @magentoDataFixture Magento/Customer/_files/two_customers.php
+     */
+    public function testMassUnsubscribAction()
+    {
+        $subscriberFactory = Bootstrap::getObjectManager()->get(SubscriberFactory::class);
+        $formKey = $this->_objectManager->get(FormKey::class);
+        $this->assertNull($subscriberFactory->create()->loadByCustomerId(1)->getSubscriberStatus());
+        $this->assertNull($subscriberFactory->create()->loadByCustomerId(2)->getSubscriberStatus());
+
+        $this->getRequest()->setParams(
+            [
+                'selected' => [1, 2],
+                'namespace' => 'customer_listing',
+                'form_key' => $formKey->getFormKey()
+            ]
+        )
+            ->setMethod('POST');
+        $this->dispatch('backend/customer/index/massUnsubscribe');
+
+        $this->assertRedirect($this->stringStartsWith($this->baseControllerUrl));
+        $this->assertSessionMessages(
+            $this->equalTo(['A total of 2 record(s) were updated.']),
+            \Magento\Framework\Message\MessageInterface::TYPE_SUCCESS
+        );
+    }
+
+
+}