MAGETWO-39942: Low quick search performance(MySql)

- Fix static and unit tests

Author: igrybkov

app/code/Magento/CatalogSearch/Setup/InstallData.php

@@ -23,22 +23,14 @@ class InstallData implements InstallDataInterface
     /**
      * @param IndexerInterfaceFactory $indexerFactory
      */
-    public function __construct(IndexerInterfaceFactory $indexerFactory,
-        ProductAttributeRepositoryInterface $attributeRepository)
-    {
+    public function __construct(
+        IndexerInterfaceFactory $indexerFactory,
+        ProductAttributeRepositoryInterface $attributeRepository
+    ) {
         $this->indexerFactory = $indexerFactory;
         $this->attributeRepository = $attributeRepository;
     }
 
-    /**
-     * @param string $indexerId
-     * @return \Magento\Indexer\Model\IndexerInterface
-     */
-    private function getIndexer($indexerId)
-    {
-        return $this->indexerFactory->create()->load($indexerId);
-    }
-
     /**
      * Installs data for a module
      *
@@ -54,6 +46,15 @@ public function install(ModuleDataSetupInterface $setup, ModuleContextInterface
         $this->getIndexer('catalogsearch_fulltext')->reindexAll();
     }
 
+    /**
+     * @param string $indexerId
+     * @return \Magento\Indexer\Model\IndexerInterface
+     */
+    private function getIndexer($indexerId)
+    {
+        return $this->indexerFactory->create()->load($indexerId);
+    }
+
     /**
      * @param string $attributeCode
      * @param int $weight