ENGCOM-6602: #11209 Wishlist Add grouped product Error #26258

 - Merge Pull Request #26258 from MaxRomanov4669/magento2:11209-wishlist-add-grouped-product-error
 - Merged commits:
   1. 9a4ccb7
   2. ec8a756
   3. 6d7b457

app/code/Magento/GroupedProduct/Model/Wishlist/Product/Item.php

@@ -0,0 +1,93 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GroupedProduct\Model\Wishlist\Product;
+
+use Magento\Wishlist\Model\Item as WishlistItem;
+use Magento\GroupedProduct\Model\Product\Type\Grouped as TypeGrouped;
+use Magento\Catalog\Model\Product;
+
+/**
+ * Wishlist logic for grouped product
+ */
+class Item
+{
+    /**
+     * Modify Wishlist item based on associated product qty
+     *
+     * @param WishlistItem $subject
+     * @param Product $product
+     * @return array
+     * @throws \Magento\Framework\Exception\LocalizedException
+     */
+    public function beforeRepresentProduct(
+        WishlistItem $subject,
+        Product $product
+    ): array {
+        if ($product->getTypeId() === TypeGrouped::TYPE_CODE
+            && $product->getId() === $subject->getProduct()->getId()
+        ) {
+            $itemOptions = $subject->getOptionsByCode();
+            $productOptions = $product->getCustomOptions();
+
+            $diff = array_diff_key($itemOptions, $productOptions);
+
+            if (!$diff) {
+                $buyRequest = $subject->getBuyRequest();
+                $superGroupInfo = $buyRequest->getData('super_group');
+
+                foreach ($itemOptions as $key => $itemOption) {
+                    if (preg_match('/associated_product_\d+/', $key)) {
+                        $simpleId = str_replace('associated_product_', '', $key);
+                        $prodQty = $productOptions[$key]->getValue();
+
+                        $itemOption->setValue($itemOption->getValue() + $prodQty);
+
+                        if (isset($superGroupInfo[$simpleId])) {
+                            $superGroupInfo[$simpleId] = $itemOptions[$key]->getValue();
+                        }
+                    }
+                }
+
+                $buyRequest->setData('super_group', $superGroupInfo);
+
+                $subject->setOptions($itemOptions);
+                $subject->mergeBuyRequest($buyRequest);
+            }
+        }
+
+        return [$product];
+    }
+
+    /**
+     * Remove associated_product_id key. associated_product_id contains qty
+     *
+     * @param WishlistItem $subject
+     * @param array $options1
+     * @param array $options2
+     * @return array
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function beforeCompareOptions(
+        WishlistItem $subject,
+        array $options1,
+        array $options2
+    ): array {
+        $diff = array_diff_key($options1, $options2);
+
+        if (!$diff) {
+            foreach (array_keys($options1) as $key) {
+                if (preg_match('/associated_product_\d+/', $key)) {
+                    unset($options1[$key]);
+                    unset($options2[$key]);
+                }
+            }
+        }
+
+        return [$options1, $options2];
+    }
+}

app/code/Magento/GroupedProduct/Test/Unit/Model/Wishlist/Product/ItemTest.php

@@ -0,0 +1,183 @@
+<?php
+/**
+ *
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\GroupedProduct\Test\Unit\Model\Wishlist\Product;
+
+use Magento\GroupedProduct\Model\Product\Type\Grouped as TypeGrouped;
+
+/**
+ * Unit test for Wishlist Item Plugin.
+ */
+class ItemTest extends \PHPUnit\Framework\TestCase
+{
+    /**
+     * @var \Magento\GroupedProduct\Model\Wishlist\Product\Item
+     */
+    protected $model;
+
+    /**
+     * @var \Magento\Catalog\Model\Product|\PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $productMock;
+
+    /**
+     * @var \Magento\Wishlist\Model\Item|\PHPUnit_Framework_MockObject_MockObject
+     */
+    protected $subjectMock;
+
+    /**
+     * Init Mock Objects
+     */
+    protected function setUp()
+    {
+        $this->subjectMock = $this->createPartialMock(
+            \Magento\Wishlist\Model\Item::class,
+            [
+                'getOptionsByCode',
+                'getBuyRequest',
+                'setOptions',
+                'mergeBuyRequest',
+                'getProduct'
+            ]
+        );
+
+        $this->productMock = $this->createPartialMock(
+            \Magento\Catalog\Model\Product::class,
+            [
+                'getId',
+                'getTypeId',
+                'getCustomOptions'
+            ]
+        );
+
+        $this->model = new \Magento\GroupedProduct\Model\Wishlist\Product\Item();
+    }
+
+    /**
+     * Test Before Represent Product method
+     */
+    public function testBeforeRepresentProduct()
+    {
+        $testSimpleProdId = 34;
+        $prodInitQty = 2;
+        $prodQtyInWishlist = 3;
+        $resWishlistQty = $prodInitQty + $prodQtyInWishlist;
+        $superGroup = [
+            'super_group' => [
+                33 => "0",
+                34 => 3,
+                35 => "0"
+            ]
+        ];
+
+        $superGroupObj = new \Magento\Framework\DataObject($superGroup);
+
+        $this->productMock->expects($this->once())->method('getId')->willReturn($testSimpleProdId);
+        $this->productMock->expects($this->once())->method('getTypeId')
+            ->willReturn(TypeGrouped::TYPE_CODE);
+        $this->productMock->expects($this->once())->method('getCustomOptions')
+            ->willReturn(
+                $this->getProductAssocOption($prodInitQty, $testSimpleProdId)
+            );
+
+        $wishlistItemProductMock = $this->createPartialMock(
+            \Magento\Catalog\Model\Product::class,
+            [
+                'getId',
+            ]
+        );
+        $wishlistItemProductMock->expects($this->once())->method('getId')->willReturn($testSimpleProdId);
+
+        $this->subjectMock->expects($this->once())->method('getProduct')
+            ->willReturn($wishlistItemProductMock);
+        $this->subjectMock->expects($this->once())->method('getOptionsByCode')
+            ->willReturn(
+                $this->getWishlistAssocOption($prodQtyInWishlist, $resWishlistQty, $testSimpleProdId)
+            );
+        $this->subjectMock->expects($this->once())->method('getBuyRequest')->willReturn($superGroupObj);
+
+        $this->model->beforeRepresentProduct($this->subjectMock, $this->productMock);
+    }
+
+    /**
+     * Test Before Compare Options method with same keys
+     */
+    public function testBeforeCompareOptionsSameKeys()
+    {
+        $options1 = ['associated_product_34' => 3];
+        $options2 = ['associated_product_34' => 2];
+
+        $res = $this->model->beforeCompareOptions($this->subjectMock, $options1, $options2);
+
+        $this->assertEquals([], $res[0]);
+        $this->assertEquals([], $res[1]);
+    }
+
+    /**
+     * Test Before Compare Options method with diff keys
+     */
+    public function testBeforeCompareOptionsDiffKeys()
+    {
+        $options1 = ['associated_product_1' => 3];
+        $options2 = ['associated_product_34' => 2];
+
+        $res = $this->model->beforeCompareOptions($this->subjectMock, $options1, $options2);
+
+        $this->assertEquals($options1, $res[0]);
+        $this->assertEquals($options2, $res[1]);
+    }
+
+    /**
+     * Return mock array with wishlist options
+     *
+     * @param int $initVal
+     * @param int $resVal
+     * @param int $prodId
+     * @return array
+     */
+    private function getWishlistAssocOption($initVal, $resVal, $prodId)
+    {
+        $items = [];
+
+        $optionMock = $this->createPartialMock(
+            \Magento\Wishlist\Model\Item\Option::class,
+            [
+                'getValue',
+            ]
+        );
+        $optionMock->expects($this->at(0))->method('getValue')->willReturn($initVal);
+        $optionMock->expects($this->at(1))->method('getValue')->willReturn($resVal);
+
+        $items['associated_product_' . $prodId] = $optionMock;
+
+        return $items;
+    }
+
+    /**
+     * Return mock array with product options
+     *
+     * @param int $initVal
+     * @param int $prodId
+     * @return array
+     */
+    private function getProductAssocOption($initVal, $prodId)
+    {
+        $items = [];
+
+        $optionMock = $this->createPartialMock(
+            \Magento\Catalog\Model\Product\Configuration\Item\Option::class,
+            [
+                'getValue',
+            ]
+        );
+
+        $optionMock->expects($this->once())->method('getValue')->willReturn($initVal);
+
+        $items['associated_product_' . $prodId] = $optionMock;
+
+        return $items;
+    }
+}

app/code/Magento/GroupedProduct/composer.json

@@ -18,7 +18,8 @@
         "magento/module-quote": "*",
         "magento/module-sales": "*",
         "magento/module-store": "*",
-        "magento/module-ui": "*"
+        "magento/module-ui": "*",
+        "magento/module-wishlist": "*"
     },
     "suggest": {
         "magento/module-grouped-product-sample-data": "*"

app/code/Magento/GroupedProduct/etc/frontend/di.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+    <type name="Magento\Wishlist\Model\Item">
+        <plugin name="groupedProductWishlistProcessor" type="Magento\GroupedProduct\Model\Wishlist\Product\Item" />
+    </type>
+</config>