Configurable Product Links Validation Bug when int value is 0

app/code/Magento/ConfigurableProduct/Model/Plugin/ProductRepositorySave.php

@@ -3,6 +3,9 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
+declare(strict_types=1);
+
 namespace Magento\ConfigurableProduct\Model\Plugin;
 
 use Magento\Catalog\Api\Data\ProductInterface;
@@ -56,7 +59,7 @@ public function beforeSave(
         ProductRepositoryInterface $subject,
         ProductInterface $product,
         $saveOptions = false
-    ) {
+    ): array {
         $result[] = $product;
         if ($product->getTypeId() !== Configurable::TYPE_CODE) {
             return $result;
@@ -102,7 +105,7 @@ public function afterSave(
         ProductInterface $result,
         ProductInterface $product,
         $saveOptions = false
-    ) {
+    ): ProductInterface {
         if ($product->getTypeId() !== Configurable::TYPE_CODE) {
             return $result;
         }
@@ -120,19 +123,23 @@ public function afterSave(
      * @throws InputException
      * @throws NoSuchEntityException
      */
-    private function validateProductLinks(array $attributeCodes, array $linkIds)
+    private function validateProductLinks(array $attributeCodes, array $linkIds): void
     {
         $valueMap = [];
         foreach ($linkIds as $productId) {
             $variation = $this->productRepository->getById($productId);
             $valueKey = '';
             foreach ($attributeCodes as $attributeCode) {
-                if (!$variation->getData($attributeCode)) {
+                if ($variation->getData($attributeCode) === null) {
                     throw new InputException(
-                        __('Product with id "%1" does not contain required attribute "%2".', $productId, $attributeCode)
+                        __(
+                            'Product with id "%1" does not contain required attribute "%2".',
+                            $productId,
+                            $attributeCode
+                        )
                     );
                 }
-                $valueKey = $valueKey . $attributeCode . ':' . $variation->getData($attributeCode) . ';';
+                $valueKey .= $attributeCode . ':' . $variation->getData($attributeCode) . ';';
             }
             if (isset($valueMap[$valueKey])) {
                 throw new InputException(

app/code/Magento/ConfigurableProduct/Test/Unit/Model/Plugin/ProductRepositorySaveTest.php

@@ -3,6 +3,7 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
 declare(strict_types=1);
 
 namespace Magento\ConfigurableProduct\Test\Unit\Model\Plugin;
@@ -18,6 +19,7 @@
 use Magento\Framework\TestFramework\Unit\Helper\ObjectManager;
 use PHPUnit\Framework\MockObject\MockObject;
 use PHPUnit\Framework\TestCase;
+use Magento\Framework\Exception\InputException;
 
 /**
  * Test for ProductRepositorySave plugin
@@ -71,7 +73,8 @@ class ProductRepositorySaveTest extends TestCase
      */
     protected function setUp(): void
     {
-        $this->productAttributeRepository = $this->getMockForAbstractClass(ProductAttributeRepositoryInterface::class);
+        $this->productAttributeRepository =
+            $this->getMockForAbstractClass(ProductAttributeRepositoryInterface::class);
 
         $this->product = $this->getMockBuilder(Product::class)
             ->disableOriginalConstructor()
@@ -105,8 +108,10 @@ protected function setUp(): void
 
     /**
      * Validating the result after saving a configurable product
+     *
+     * @return void
      */
-    public function testBeforeSaveWhenProductIsSimple()
+    public function testBeforeSaveWhenProductIsSimple(): void
     {
         $this->product->expects(static::once())
             ->method('getTypeId')
@@ -122,8 +127,10 @@ public function testBeforeSaveWhenProductIsSimple()
 
     /**
      * Test saving a configurable product without attribute options
+     *
+     * @return void
      */
-    public function testBeforeSaveWithoutOptions()
+    public function testBeforeSaveWithoutOptions(): void
     {
         $this->product->expects(static::once())
             ->method('getTypeId')
@@ -151,10 +158,12 @@ public function testBeforeSaveWithoutOptions()
 
     /**
      * Test saving a configurable product with same set of attribute values
+     *
+     * @return void
      */
-    public function testBeforeSaveWithLinks()
+    public function testBeforeSaveWithLinks(): void
     {
-        $this->expectException('Magento\Framework\Exception\InputException');
+        $this->expectException(InputException::class);
         $this->expectExceptionMessage('Products "5" and "4" have the same set of attribute values.');
         $links = [4, 5];
         $this->product->expects(static::once())
@@ -191,10 +200,12 @@ public function testBeforeSaveWithLinks()
 
     /**
      * Test saving a configurable product with missing attribute
+     *
+     * @return void
      */
-    public function testBeforeSaveWithLinksWithMissingAttribute()
+    public function testBeforeSaveWithLinksWithMissingAttribute(): void
     {
-        $this->expectException('Magento\Framework\Exception\InputException');
+        $this->expectException(InputException::class);
         $this->expectExceptionMessage('Product with id "4" does not contain required attribute "color".');
         $simpleProductId = 4;
         $links = [$simpleProductId, 5];
@@ -239,17 +250,19 @@ public function testBeforeSaveWithLinksWithMissingAttribute()
         $product->expects(static::once())
             ->method('getData')
             ->with($attributeCode)
-            ->willReturn(false);
+            ->willReturn(null);
 
         $this->plugin->beforeSave($this->productRepository, $this->product);
     }
 
     /**
      * Test saving a configurable product with duplicate attributes
+     *
+     * @return void
      */
-    public function testBeforeSaveWithLinksWithDuplicateAttributes()
+    public function testBeforeSaveWithLinksWithDuplicateAttributes(): void
     {
-        $this->expectException('Magento\Framework\Exception\InputException');
+        $this->expectException(InputException::class);
         $this->expectExceptionMessage('Products "5" and "4" have the same set of attribute values.');
         $links = [4, 5];
         $attributeCode = 'color';

dev/tests/api-functional/testsuite/Magento/ConfigurableProduct/Api/ProductRepositoryTest.php

@@ -6,17 +6,20 @@
 namespace Magento\ConfigurableProduct\Api;
 
 use Magento\Catalog\Api\Data\ProductInterface;
+use Magento\Catalog\Api\ProductRepositoryInterface;
 use Magento\Catalog\Model\Entity\Attribute;
 use Magento\Eav\Model\Config;
 use Magento\Eav\Model\ResourceModel\Entity\Attribute\Option\Collection;
 use Magento\Framework\Api\ExtensibleDataInterface;
 use Magento\Framework\ObjectManagerInterface;
 use Magento\Framework\Webapi\Rest\Request;
 use Magento\TestFramework\Helper\Bootstrap;
+use Magento\ConfigurableProduct\Model\Product\Type\Configurable;
 use Magento\TestFramework\TestCase\WebapiAbstract;
 
 /**
  * Class ProductRepositoryTest for testing ConfigurableProduct integration
+ * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  */
 class ProductRepositoryTest extends WebapiAbstract
 {
@@ -28,17 +31,22 @@ class ProductRepositoryTest extends WebapiAbstract
     /**
      * @var Config
      */
-    protected $eavConfig;
+    private $eavConfig;
 
     /**
      * @var ObjectManagerInterface
      */
-    protected $objectManager;
+    private $objectManager;
 
     /**
      * @var Attribute
      */
-    protected $configurableAttribute;
+    private $configurableAttribute;
+
+    /**
+     * @var ProductRepositoryInterface
+     */
+    private $productRepository;
 
     /**
      * @inheritdoc
@@ -47,6 +55,7 @@ protected function setUp(): void
     {
         $this->objectManager = Bootstrap::getObjectManager();
         $this->eavConfig = $this->objectManager->get(Config::class);
+        $this->productRepository = $this->objectManager->get(ProductRepositoryInterface::class);
     }
 
     /**
@@ -164,6 +173,65 @@ public function testCreateConfigurableProduct()
         $this->assertEquals([$productId1, $productId2], $resultConfigurableProductLinks);
     }
 
+    /**
+     * Create configurable with simple which has zero attribute value
+     *
+     * @magentoApiDataFixture Magento/ConfigurableProduct/_files/configurable_attribute_with_source_model.php
+     * @magentoApiDataFixture Magento/Catalog/_files/product_simple.php
+     * @return void
+     */
+    public function testCreateConfigurableProductWithZeroOptionValue(): void
+    {
+        $attributeCode = 'test_configurable_with_sm';
+        $attributeValue = 0;
+
+        $product = $this->productRepository->get('simple');
+        $product->setCustomAttribute($attributeCode, $attributeValue);
+        $this->productRepository->save($product);
+
+        $configurableAttribute = $this->eavConfig->getAttribute('catalog_product', $attributeCode);
+
+        $productData = [
+            'sku' => self::CONFIGURABLE_PRODUCT_SKU,
+            'name' => self::CONFIGURABLE_PRODUCT_SKU,
+            'type_id' => Configurable::TYPE_CODE,
+            'attribute_set_id' => 4,
+            'extension_attributes' => [
+                'configurable_product_options' => [
+                    [
+                        'attribute_id' => $configurableAttribute->getId(),
+                        'label' => 'Test configurable with source model',
+                        'values' => [
+                            ['value_index' => '0'],
+                        ],
+                    ],
+                ],
+                'configurable_product_links' => [$product->getId()],
+            ],
+        ];
+
+        $response = $this->createProduct($productData);
+
+        $this->assertArrayHasKey(ProductInterface::SKU, $response);
+        $this->assertEquals(self::CONFIGURABLE_PRODUCT_SKU, $response[ProductInterface::SKU]);
+
+        $this->assertArrayHasKey(ProductInterface::TYPE_ID, $response);
+        $this->assertEquals('configurable', $response[ProductInterface::TYPE_ID]);
+
+        $this->assertArrayHasKey(ProductInterface::EXTENSION_ATTRIBUTES_KEY, $response);
+        $this->assertArrayHasKey(
+            'configurable_product_options',
+            $response[ProductInterface::EXTENSION_ATTRIBUTES_KEY]
+        );
+        $configurableProductOption =
+            current($response[ProductInterface::EXTENSION_ATTRIBUTES_KEY]['configurable_product_options']);
+
+        $this->assertArrayHasKey('attribute_id', $configurableProductOption);
+        $this->assertEquals($configurableAttribute->getId(), $configurableProductOption['attribute_id']);
+        $this->assertArrayHasKey('values', $configurableProductOption);
+        $this->assertEquals($attributeValue, $configurableProductOption['values'][0]['value_index']);
+    }
+
     /**
      * @magentoApiDataFixture Magento/ConfigurableProduct/_files/product_configurable.php
      */