MC-19607: Mass delete deletes all products

Author: Oleksandr Iegorov

app/code/Magento/CatalogSearch/Test/Unit/Ui/DataProvider/Product/AddFulltextFilterToCollectionTest.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\CatalogSearch\Test\Unit\Ui\DataProvider\Product;
+
+use Magento\Framework\TestFramework\Unit\Helper\ObjectManager as ObjectManagerHelper;
+use Magento\CatalogSearch\Model\ResourceModel\Search\Collection as SearchCollection;
+use Magento\Framework\Data\Collection;
+use Magento\CatalogSearch\Ui\DataProvider\Product\AddFulltextFilterToCollection;
+
+class AddFulltextFilterToCollectionTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var SearchCollection|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $searchCollection;
+
+    /**
+     * @var Collection|\PHPUnit_Framework_MockObject_MockObject
+     */
+    private $collection;
+
+    /**
+     * @var ObjectManagerHelper
+     */
+    private $objectManager;
+
+    /**
+     * @var AddFulltextFilterToCollection
+     */
+    private $model;
+
+    protected function setUp()
+    {
+        $this->objectManager = new ObjectManagerHelper($this);
+
+        $this->searchCollection = $this->getMockBuilder(SearchCollection::class)
+            ->setMethods(['addBackendSearchFilter', 'load', 'getAllIds'])
+            ->disableOriginalConstructor()
+            ->getMock();
+        $this->searchCollection->expects($this->any())
+            ->method('load')
+            ->willReturnSelf();
+        $this->collection = $this->getMockBuilder(Collection::class)
+            ->setMethods(['addIdFilter'])
+            ->disableOriginalConstructor()
+            ->getMock();
+
+        $this->model = $this->objectManager->getObject(
+            AddFulltextFilterToCollection::class,
+            [
+                'searchCollection' => $this->searchCollection
+            ]
+        );
+    }
+
+    public function testAddFilter()
+    {
+        $this->searchCollection->expects($this->once())
+            ->method('addBackendSearchFilter')
+            ->with('test');
+        $this->searchCollection->expects($this->once())
+            ->method('getAllIds')
+            ->willReturn([]);
+        $this->collection->expects($this->once())
+            ->method('addIdFilter')
+            ->with(-1);
+        $this->model->addFilter($this->collection, 'test', ['fulltext' => 'test']);
+    }
+}