MAGETWO-35744: [MX] [Nord] Code coverage - Sprint 20

- MAGETWO-36954: Decrease CRAP of Magento\Review\Model\Resource\Rating\Collection::addEntitySummaryToItem

Author: Denys Rudchenko

dev/tests/integration/testsuite/Magento/Review/Model/Resource/Rating/CollectionTest.php

@@ -27,7 +27,19 @@ public function testAddEntitySummaryToItem()
         $ratingData = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()
             ->get('Magento\Framework\Registry')
             ->registry('rating_data');
-        $this->collection->addEntitySummaryToItem($ratingData->getEntityId(), $ratingData->getStoreId());
+
+        $result = $this->collection->addEntitySummaryToItem($ratingData->getEntityId(), $ratingData->getStoreId());
+        $this->assertEquals($this->collection, $result);
+    }
+
+    public function testAddEntitySummaryToItemEmpty()
+    {
+        foreach ($this->collection->getItems() as $item) {
+            $item->delete();
+        }
+        $this->collection->clear();
+        $result = $this->collection->addEntitySummaryToItem(1, 1);
+        $this->assertEquals($this->collection, $result);
     }
 
     public function testAddStoreData()

dev/tests/integration/testsuite/Magento/Review/_files/customer_rating.php

@@ -5,17 +5,38 @@
  */
 require __DIR__ . '/customer_review.php';
 
+$storeId = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()
+    ->get('Magento\Store\Model\StoreManagerInterface')
+    ->getStore()
+    ->getId();
+/** @var \Magento\Review\Model\Rating $ratingModel */
 $ratingModel = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
     'Magento\Review\Model\Rating',
     ['data' => [
         'rating_code' => 'test',
-        'rating_codes' => ['test'],
         'position' => 0,
-        'isActive' => 1,
-        'entityId' => $review->getEntityId()
+        'isActive' => 1
     ]]
 );
+$ratingModel->setStoreId($storeId)
+    ->setStores([$storeId])
+    ->setEntityId($ratingModel->getEntityIdByCode(Magento\Review\Model\Rating::ENTITY_PRODUCT_CODE))
+    ->setRatingCodes(['test']);
 $ratingModel->save();
+
+/** @var \Magento\Review\Model\Rating\Option $optionModel */
+$optionModel = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
+    'Magento\Review\Model\Rating\Option'
+);
+$optionModel->setCode(1)
+    ->setValue(1)
+    ->setRatingId($ratingModel->getId())
+    ->setPosition(1)
+    ->setReviewId($review->getId())
+    ->setEntityPkValue($product->getId())
+    ->save();
+$optionModel->addVote();
+
 \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->get('Magento\Framework\Registry')->register(
     'rating_data',
     $ratingModel