AC-5979: Rest API products-render-info return wrong final price for logged in customer

Author: wip44850

dev/tests/api-functional/testsuite/Magento/Catalog/Api/ProductRenderListTierPricingTest.php

@@ -0,0 +1,113 @@
+<?php
+/**
+ * Copyright 2025 Adobe
+ * All Rights Reserved.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\Catalog\Api;
+
+use Magento\Catalog\Test\Fixture\Product as ProductFixture;
+use Magento\Customer\Test\Fixture\Customer as CustomerFixture;
+use Magento\Framework\Webapi\Rest\Request;
+use Magento\TestFramework\Fixture\DataFixture;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\WebapiAbstract;
+use Magento\TestFramework\Fixture\DataFixtureStorage;
+use Magento\TestFramework\Fixture\DataFixtureStorageManager;
+use Magento\Integration\Api\CustomerTokenServiceInterface;
+
+/**
+ * Test tier pricing functionality in products-render-info API
+ */
+class ProductRenderListTierPricingTest extends WebapiAbstract
+{
+    private const RESOURCE_PATH = '/V1/products-render-info';
+
+    /**
+     * @var CustomerTokenServiceInterface
+     */
+    private $customerTokenService;
+
+    /**
+     * Set up test dependencies
+     */
+    protected function setUp(): void
+    {
+        $this->_markTestAsRestOnly();
+        parent::setUp();
+        $objectManager = Bootstrap::getObjectManager();
+        $this->customerTokenService = $objectManager->get(CustomerTokenServiceInterface::class);
+    }
+
+    #[
+        DataFixture(
+            ProductFixture::class,
+            [
+                'sku' => 'simple',
+                'website_id' => 0,
+                'tier_prices' => [
+                    [
+                        'customer_group_id' => 2,
+                        'qty' => 1,
+                        'value' => 6
+                    ]
+                ]
+            ]
+        ),
+        DataFixture(CustomerFixture::class, ['group_id' => 1], as: 'customer_a'),
+        DataFixture(CustomerFixture::class, ['group_id' => 2], as: 'customer_b')
+    ]
+    public function testGuestUserGetsBasePriceNotTierPrice(): void
+    {
+        $searchCriteria = [
+            'searchCriteria' => [
+                'page_size' => 1,
+            ],
+            'store_id' => 1,
+            'currencyCode' => 'USD'
+        ];
+        $customerEmail = DataFixtureStorageManager::getStorage()->get('customer_a')->getEmail();
+        $customerPassword = "password";
+        // Get customer token
+        $token = $this->customerTokenService
+            ->createCustomerAccessToken($customerEmail, $customerPassword);
+        $serviceInfo = [
+            'rest' => [
+                'resourcePath' => self::RESOURCE_PATH .
+                    '?' . http_build_query($searchCriteria) . '&storeId=1&currencyCode=USD',
+                'httpMethod' => Request::HTTP_METHOD_GET,
+                'token' => $token,
+            ],
+        ];
+        $response = $this->_webApiCall($serviceInfo);
+        $this->assertArrayHasKey('items', $response);
+        $this->assertNotEmpty($response['items']);
+        $product = reset($response['items']);
+        $this->assertArrayHasKey('price_info', $product);
+        // Guest should get regular price, not tier price
+        $finalPrice = $product['price_info']['final_price'];
+        $this->assertEquals(6, $finalPrice, 'customer_a should get tier price');
+
+        $customerEmail = DataFixtureStorageManager::getStorage()->get('customer_b')->getEmail();
+        // Get customer token
+        $token = $this->customerTokenService
+            ->createCustomerAccessToken($customerEmail, $customerPassword);
+        $serviceInfo = [
+            'rest' => [
+                'resourcePath' => self::RESOURCE_PATH .
+                    '?' . http_build_query($searchCriteria) . '&storeId=1&currencyCode=USD',
+                'httpMethod' => Request::HTTP_METHOD_GET,
+                'token' => $token,
+            ],
+        ];
+
+        $response = $this->_webApiCall($serviceInfo);
+        $product = reset($response['items']);
+        $this->assertArrayHasKey('price_info', $product);
+        // Guest should get regular price, not tier price
+        $finalPrice = $product['price_info']['final_price'];
+        $this->assertEquals(10, $finalPrice, 'customer_b should not get tier price');
+    }
+}