AC-1479: Incorrect qty to ship after few creditmemos

Added integration test coverage

Author: sumesh-GL

dev/tests/integration/testsuite/Magento/Sales/Model/Order/ItemTest.php

@@ -1,11 +1,35 @@
 <?php
 /**
- * Copyright © Magento, Inc. All rights reserved.
- * See COPYING.txt for license details.
+ * Copyright 2017 Adobe
+ * All Rights Reserved.
  */
+declare(strict_types=1);
+
 namespace Magento\Sales\Model\Order;
 
-class ItemTest extends \PHPUnit\Framework\TestCase
+use Magento\Catalog\Test\Fixture\Product as ProductFixture;
+use Magento\Catalog\Test\Fixture\ProductStock as ProductStockFixture;
+use Magento\Checkout\Test\Fixture\PlaceOrder as PlaceOrderFixture;
+use Magento\Checkout\Test\Fixture\SetBillingAddress as SetBillingAddressFixture;
+use Magento\Checkout\Test\Fixture\SetDeliveryMethod as SetDeliveryMethodFixture;
+use Magento\Checkout\Test\Fixture\SetPaymentMethod as SetPaymentMethodFixture;
+use Magento\Checkout\Test\Fixture\SetShippingAddress as SetShippingAddressFixture;
+use Magento\Quote\Test\Fixture\AddProductToCart as AddProductToCartFixture;
+use Magento\Quote\Test\Fixture\GuestCart as GuestCartFixture;
+use Magento\Sales\Model\Order;
+use Magento\Sales\Test\Fixture\Creditmemo as CreditmemoFixture;
+use Magento\Sales\Test\Fixture\Invoice as InvoiceFixture;
+use Magento\Sales\Test\Fixture\Shipment as ShipmentFixture;
+use Magento\TestFramework\Fixture\DataFixture;
+use Magento\TestFramework\Fixture\DataFixtureStorageManager;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test for the Order Item model
+ *
+ * @suppressWarnings(PHPMD.CouplingBetweenObjects)
+ */
+class ItemTest extends TestCase
 {
     /**
      * @param string $options
@@ -35,4 +59,71 @@ public static function getProductOptionsDataProvider()
             ],
         ];
     }
+
+    /**
+     * Test getSimpleQtyToShip method
+     *
+     * @magentoDbIsolation disabled
+     * @magentoAppArea adminhtml
+     * @magentoConfigFixture default/catalog/seo/generate_category_product_rewrites 0
+     */
+    #[
+        DataFixture(ProductFixture::class, as: 'product'),
+        DataFixture(ProductStockFixture::class, ['prod_id' => '$product.id$', 'prod_qty' => 100, 'is_in_stock' => 1]),
+        DataFixture(GuestCartFixture::class, as: 'cart'),
+        DataFixture(
+            AddProductToCartFixture::class,
+            ['cart_id' => '$cart.id$', 'product_id' => '$product.id$', 'qty' => 10]
+        ),
+        DataFixture(
+            SetBillingAddressFixture::class,
+            ['cart_id' => '$cart.id$', 'address' => ['email' => 'guest@example.com']]
+        ),
+        DataFixture(
+            SetShippingAddressFixture::class,
+            ['cart_id' => '$cart.id$', 'address' => ['email' => 'guest@example.com']]
+        ),
+        DataFixture(SetDeliveryMethodFixture::class, ['cart_id' => '$cart.id$']),
+        DataFixture(SetPaymentMethodFixture::class, ['cart_id' => '$cart.id$']),
+        DataFixture(PlaceOrderFixture::class, ['cart_id' => '$cart.id$'], 'order'),
+        DataFixture(InvoiceFixture::class, ['order_id' => '$order.id$'], 'invoice'),
+        DataFixture(
+            ShipmentFixture::class,
+            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 1]]]
+        ),
+        DataFixture(
+            CreditmemoFixture::class,
+            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 2]]]
+        ),
+        DataFixture(
+            ShipmentFixture::class,
+            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 1]]]
+        ),
+        DataFixture(
+            CreditmemoFixture::class,
+            ['order_id' => '$order.id$', 'items' => [['product_id' => '$product.id$', 'qty' => 2]]]
+        )
+    ]
+    public function testGetSimpleQtyToShip()
+    {
+        $fixtures = DataFixtureStorageManager::getStorage();
+
+        /** @var Order $order */
+        $order = $fixtures->get('order');
+
+        // Get order item
+        $orderItems = $order->getItems();
+        /** @var Item $orderItem */
+        $orderItem = reset($orderItems);
+
+        // Verify quantities
+        $this->assertEquals(10, $orderItem->getQtyOrdered(), 'Qty ordered should be 10');
+        $this->assertEquals(10, $orderItem->getQtyInvoiced(), 'Qty invoiced should be 10');
+        $this->assertEquals(2, $orderItem->getQtyShipped(), 'Qty shipped should be 2');
+        $this->assertEquals(4, $orderItem->getQtyRefunded(), 'Qty refunded should be 4');
+
+        // Assert getSimpleQtyToShip value
+        // Qty to ship = Qty ordered (10) - Qty shipped (2) - Qty refunded (4) = 4
+        $this->assertEquals(4, $orderItem->getSimpleQtyToShip(), 'Simple qty to ship should be 3');
+    }
 }