MAGETWO-82179: Fix Filter Customer Report Review 2.2-develop [Backport] #11522

Author: Oleksii Korshenko

app/code/Magento/Reports/Model/ResourceModel/Review/Customer/Collection.php

@@ -110,13 +110,14 @@ protected function _joinCustomers()
      */
     public function getSelectCountSql()
     {
-        $countSelect = clone $this->_select;
+        $countSelect = clone $this->getSelect();
         $countSelect->reset(\Magento\Framework\DB\Select::ORDER);
         $countSelect->reset(\Magento\Framework\DB\Select::GROUP);
         $countSelect->reset(\Magento\Framework\DB\Select::HAVING);
         $countSelect->reset(\Magento\Framework\DB\Select::LIMIT_COUNT);
         $countSelect->reset(\Magento\Framework\DB\Select::LIMIT_OFFSET);
         $countSelect->reset(\Magento\Framework\DB\Select::COLUMNS);
+        $countSelect->reset(\Magento\Framework\DB\Select::WHERE);
 
         $countSelect->columns(new \Zend_Db_Expr('COUNT(DISTINCT detail.customer_id)'));
 

dev/tests/integration/testsuite/Magento/Reports/Model/ResourceModel/Review/Customer/CollectionTest.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Reports\Model\ResourceModel\Review\Customer;
+
+/**
+ * @magentoAppArea adminhtml
+ */
+class CollectionTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var \Magento\Reports\Model\ResourceModel\Review\Customer\Collection
+     */
+    private $collection;
+
+    protected function setUp()
+    {
+        $this->collection = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
+            \Magento\Reports\Model\ResourceModel\Review\Customer\Collection::class
+        );
+    }
+
+    /**
+     * This tests covers issue described in:
+     * https://github.com/magento/magento2/issues/10301
+     *
+     * @magentoDataFixture Magento/Review/_files/customer_review.php
+     */
+    public function testSelectCountSql()
+    {
+        $this->collection->addFieldToFilter('customer_name', ['like' => '%john%']);
+        $this->assertEquals(1, $this->collection->getSize());
+    }
+}