UpdateDefaultSourceItemAtLegacyStockItemSaveTest.php

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<?php
declare(strict_types=1);

namespace Magento\InventoryCatalog\Test\Integration;

use Magento\CatalogInventory\Api\StockRegistryInterface;
use Magento\InventoryCatalog\Model\GetDefaultSourceItemBySku;
use PHPUnit\Framework\TestCase;
use Magento\TestFramework\Helper\Bootstrap;

class UpdateDefaultSourceItemAtLegacyStockItemSaveTest extends TestCase
{
    private $stockRegistry;

    private $getDefaultSourceItemBySku;

    protected function setUp()
    {
        parent::setUp();

        $this->stockRegistry = Bootstrap::getObjectManager()->create(StockRegistryInterface::class);
        $this->getDefaultSourceItemBySku = Bootstrap::getObjectManager()->get(GetDefaultSourceItemBySku::class);
    }

    public function testSaveLegacyStockItemAssignedToDefaultSource()
    {
        $stockItem = $this->stockRegistry->getStockItemBySku('SKU-1');
        $stockItem->setQty(10);
        $this->stockRegistry->updateStockItemBySku('SKU-1', $stockItem);

        $defaultSourceItem = $this->getDefaultSourceItemBySku->execute('SKU-1');
        self::assertEquals(
            10,
            $defaultSourceItem->getQuantity(),
            'Quantity is not updated in default source when legacy stock is updated and product was'
                . 'previously assigned to default source'
        );
    }

    public function testSaveLegacyStockItemNotAssignedToDefaultSource()
    {
        $stockItem = $this->stockRegistry->getStockItemBySku('SKU-2');
        $stockItem->setQty(10);
        $this->stockRegistry->updateStockItemBySku('SKU-2', $stockItem);

        $defaultSourceItem = $this->getDefaultSourceItemBySku->execute('SKU-2');
        self::assertEquals(
            10,
            $defaultSourceItem->getQuantity(),
            'Quantity is not updated in default source when legacy stock is updated'
        );

        // SKU-3 is out of stock and not assigned to default source
        $stockItem = $this->stockRegistry->getStockItemBySku('SKU-3');
        $stockItem->setQty(10);
        $this->stockRegistry->updateStockItemBySku('SKU-3', $stockItem);

        $defaultSourceItem = $this->getDefaultSourceItemBySku->execute('SKU-3');
        self::assertEquals(
            10,
            $defaultSourceItem->getQuantity(),
            'Quantity is not updated in default source when legacy stock is updated and product was not '
                . 'previously assigned to default source'
        );
    }

    public function testSaveLegacyStockItemWithoutDefaultSourceAssignment()
    {
        // SKU-3 is out of stock and not assigned to default source
        $stockItem = $this->stockRegistry->getStockItemBySku('SKU-3');
        $stockItem->setQty(0);
        $stockItem->setIsInStock(false);
        $this->stockRegistry->updateStockItemBySku('SKU-3', $stockItem);

        $defaultSourceItem = $this->getDefaultSourceItemBySku->execute('SKU-3');
        self::assertNull(
            $defaultSourceItem,
            'Product is assigned to default source on legacy stock item save even if it should not be'
        );

        // SKU-5 is out of stock and not assigned to default source
        $stockItem = $this->stockRegistry->getStockItemBySku('SKU-5');
        $stockItem->setQty(1);
        $stockItem->setIsInStock(true);
        $this->stockRegistry->updateStockItemBySku('SKU-5', $stockItem);

        $defaultSourceItem = $this->getDefaultSourceItemBySku->execute('SKU-5');
        self::assertNotNull(
            $defaultSourceItem,
            'Product is not assigned to default source on legacy stock item save even if it should be'
        );
    }
}