#32760 fix order items missing in invoice email when invoice created via API

Author: vovsky

app/code/Magento/Sales/Model/Order/Invoice/Sender/EmailSender.php

@@ -104,7 +104,9 @@ public function send(
 
             $transport = [
                 'order' => $order,
+                'order_id' => $order->getId(),
                 'invoice' => $invoice,
+                'invoice_id' => $invoice->getId(),
                 'comment' => $comment ? $comment->getComment() : '',
                 'billing' => $order->getBillingAddress(),
                 'payment_html' => $this->getPaymentHtml($order),

dev/tests/integration/testsuite/Magento/Sales/Model/Order/Invoice/Sender/EmailSenderTest.php

@@ -0,0 +1,117 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Sales\Model\Order\Invoice\Sender;
+
+use Magento\Framework\Api\SearchCriteriaBuilder;
+use Magento\Framework\ObjectManagerInterface;
+use Magento\Sales\Api\Data\InvoiceInterface;
+use Magento\Sales\Api\Data\OrderInterface;
+use Magento\Sales\Api\OrderRepositoryInterface;
+use Magento\Sales\Model\ResourceModel\Order\Invoice\CollectionFactory;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+use Magento\Sales\Model\Order\Invoice\Sender\EmailSender;
+use Magento\TestFramework\Mail\Template\TransportBuilderMock;
+
+/**
+ * Test Order\Invoice\Sender\EmailSender model
+ *
+ * @see \Magento\Sales\Model\Order\Invoice\Sender\EmailSender
+ * @magentoDbIsolation enabled
+ * @magentoDataFixture Magento/Sales/_files/invoice.php
+ */
+class EmailSenderTest extends TestCase
+{
+    /**
+     * @var ObjectManagerInterface
+     */
+    private $objectManager;
+
+    /**
+     * @var EmailSender
+     */
+    private $emailSender;
+
+    /**
+     * @var CollectionFactory
+     */
+    private $invoiceCollectionFactory;
+
+    /**
+     * @var TransportBuilderMock
+     */
+    private $transportBuilder;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->emailSender = $this->objectManager->get(EmailSender::class);
+        $this->invoiceCollectionFactory = $this->objectManager->get(CollectionFactory::class);
+        $this->transportBuilder = $this->objectManager->get(TransportBuilderMock::class);
+    }
+
+    /**
+     * Test that order item(s) present in email
+     *
+     * @magentoAppArea frontend
+     * @return void
+     * @throws \Exception
+     */
+    public function testOrderItemsPresentInEmail()
+    {
+        $order = $this->getOrder('100000001');
+        $invoice = $this->getInvoiceByOrder($order);
+        $this->emailSender->send($order, $invoice);
+        $message = $this->transportBuilder->getSentMessage();
+        $this->assertStringContainsString(
+            'SKU: simple',
+            $message->getBody()->getParts()[0]->getRawContent(),
+            'Expected text wasn\'t found in message.'
+        );
+    }
+
+
+    /**
+     * Get first order invoice
+     *
+     * @param OrderInterface|int $order
+     * @return InvoiceInterface
+     */
+    protected function getInvoiceByOrder($order): InvoiceInterface
+    {
+        $invoiceCollection = $this->invoiceCollectionFactory->create();
+
+        return $invoiceCollection->setOrderFilter($order)->setPageSize(1)->getFirstItem();
+    }
+
+    /**
+     * Gets order entity by increment id.
+     *
+     * @param string $incrementId
+     * @return OrderInterface
+     */
+    private function getOrder(string $incrementId): OrderInterface
+    {
+        /** @var SearchCriteriaBuilder $searchCriteriaBuilder */
+        $searchCriteriaBuilder = $this->objectManager->get(SearchCriteriaBuilder::class);
+        $searchCriteria = $searchCriteriaBuilder->addFilter('increment_id', $incrementId)
+            ->create();
+
+        /** @var OrderRepositoryInterface $repository */
+        $repository = $this->objectManager->get(OrderRepositoryInterface::class);
+        $items = $repository->getList($searchCriteria)
+            ->getItems();
+
+        return array_pop($items);
+    }
+}