#24730: Add integration test for Invoice GetLogoFile service class

Author: mozok

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

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Sales\Model\Order\Invoice;
+
+use Magento\Store\Model\ScopeInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\ObjectManager;
+use Magento\Framework\App\Config\MutableScopeConfigInterface;
+
+/**
+ * Test class for \Magento\Sales\Model\Order\Invoice\GetLogoFile
+ */
+class GetLogoFileTest extends \PHPUnit\Framework\TestCase
+{
+    private const XML_PATH_SALES_IDENTITY_LOGO_HTML = 'sales/identity/logo_html';
+    private const DUMP_IMAGE = 'my_dump_logo.png';
+
+    /**
+     * @var ObjectManager
+     */
+    private $objectManager;
+
+    /**
+     * @var MutableScopeConfigInterface
+     */
+    private $scopeConfig;
+
+    /**
+     * @var GetLogoFile
+     */
+    private $getLogoFile;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp(): void
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->scopeConfig = $this->objectManager->get(MutableScopeConfigInterface::class);
+        $this->getLogoFile = $this->objectManager->get(GetLogoFile::class);
+    }
+
+    /**
+     * Check that GetLogoFile return image after Admin configuration is changed
+     *
+     * @return void
+     */
+    public function testExecute(): void
+    {
+        $this->assertNull($this->getLogoFile->execute());
+
+        $this->applyImage();
+
+        $this->assertIsString($this->getLogoFile->execute());
+        $this->assertStringContainsString(self::DUMP_IMAGE, $this->getLogoFile->execute());
+    }
+
+    /**
+     * Set Invoice Custom Logo HTML Image configuration
+     *
+     * @return void
+     */
+    private function applyImage(): void
+    {
+        $this->scopeConfig->setValue(
+            self::XML_PATH_SALES_IDENTITY_LOGO_HTML,
+            self::DUMP_IMAGE,
+            ScopeInterface::SCOPE_STORE
+        );
+    }
+}