MC-39687: Create automated test for: "Set backorders "Allow Qty Below 0" and check indexers"

Author: romadjelf

dev/tests/integration/testsuite/Magento/CatalogInventory/Model/Config/Backend/BackordersTest.php

@@ -0,0 +1,99 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\CatalogInventory\Model\Config\Backend;
+
+use Magento\CatalogInventory\Model\Configuration;
+use Magento\CatalogInventory\Model\Indexer\Stock\Processor;
+use Magento\CatalogInventory\Model\Stock;
+use Magento\Config\Model\Config\BackendFactory;
+use Magento\Framework\App\Config\MutableScopeConfigInterface;
+use Magento\Framework\Indexer\StateInterface;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Checks that the backorders config backend model is working correctly
+ */
+class BackordersTest extends TestCase
+{
+    /** @var ObjectManagerInterface */
+    private $objectManager;
+
+    /** @var Backorders */
+    private $backorders;
+
+    /** @var BackendFactory */
+    private $backendFactory;
+
+    /** @var MutableScopeConfigInterface */
+    private $mutableConfig;
+
+    /** @var Processor */
+    private $stockIndexerProcessor;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp(): void
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->backendFactory = $this->objectManager->create(BackendFactory::class);
+        $this->backorders = $this->backendFactory->create(Backorders::class, [
+            'data' => [
+                'path' => Configuration::XML_PATH_BACKORDERS,
+            ]
+        ]);
+        $this->mutableConfig = $this->objectManager->get(MutableScopeConfigInterface::class);
+        $this->stockIndexerProcessor = $this->objectManager->get(Processor::class);
+    }
+
+    /**
+     * @dataProvider afterSaveDataProvider
+     * @param int $value
+     * @param int $currentValue
+     * @param string $expectedIndexerStatus
+     * @magentoDbIsolation disabled
+     * @return void
+     */
+    public function testAfterSave(int $value, int $currentValue, string $expectedIndexerStatus): void
+    {
+        $this->stockIndexerProcessor->reindexAll();
+        $this->mutableConfig->setValue(Configuration::XML_PATH_BACKORDERS, $currentValue);
+        $this->backorders->setValue((string)$value);
+        $this->backorders->afterSave();
+
+        $this->assertEquals($expectedIndexerStatus, $this->stockIndexerProcessor->getIndexer()->getStatus());
+    }
+
+    /**
+     * Data provider for testAfterSave
+     *
+     * @return array
+     */
+    public function afterSaveDataProvider(): array
+    {
+        return [
+            'set_backorders' => [
+                'value' => Stock::BACKORDERS_YES_NONOTIFY,
+                'current_value' => Stock::BACKORDERS_NO,
+                'expected_indexer_status' => StateInterface::STATUS_INVALID,
+            ],
+            'unset_backorders' => [
+                'value' => Stock::BACKORDERS_NO,
+                'current_value' => Stock::BACKORDERS_YES_NONOTIFY,
+                'expected_indexer_status' => StateInterface::STATUS_INVALID,
+            ],
+            'same_backorders' => [
+                'value' => Stock::BACKORDERS_YES_NONOTIFY,
+                'current_value' => Stock::BACKORDERS_YES_NONOTIFY,
+                'expected_indexer_status' => StateInterface::STATUS_VALID,
+            ],
+        ];
+    }
+}