Fix incorrect logo on order print page

Add test coverage

Author: ihor-sviziev

dev/tests/integration/testsuite/Magento/Sales/Block/Order/PrintOrder/LogoTest.php

@@ -5,17 +5,17 @@
  */
 namespace Magento\Sales\Block\Order\PrintOrder;
 
-use Magento\Framework\View\LayoutInterface;
-use Magento\TestFramework\Helper\Bootstrap;
+use Magento\Framework\App\Filesystem\DirectoryList;
 use Magento\Framework\App\State;
-use Magento\Theme\Block\Html\Header\Logo;
 use Magento\Framework\Filesystem;
 use Magento\Framework\Filesystem\Directory\WriteInterface;
-use Magento\Framework\App\Filesystem\DirectoryList;
 use Magento\Framework\ObjectManagerInterface;
-use Magento\Theme\ViewModel\Block\Html\Header\LogoPathResolver as LogoPathResolverDefault;
+use Magento\Framework\View\LayoutInterface;
 use Magento\Sales\ViewModel\Header\LogoPathResolver as LogoPathResolverSales;
-use \PHPUnit\Framework\TestCase;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\Theme\Block\Html\Header\Logo;
+use Magento\Theme\ViewModel\Block\Html\Header\LogoPathResolver as LogoPathResolverDefault;
+use PHPUnit\Framework\TestCase;
 
 class LogoTest extends TestCase
 {
@@ -71,4 +71,33 @@ public function testGetLogoSrc(): void
         $this->mediaDirectory->delete($defaultPath);
         $this->mediaDirectory->delete($salesPath);
     }
+
+    /**
+     * Checks that fallback to header logo works fine
+     *
+     * @magentoConfigFixture default_store design/header/logo_src default/logo.jpg
+     * @throws \Magento\Framework\Exception\FileSystemException
+     */
+    public function testGetLogoSrcWithFallback(): void
+    {
+        $host = 'http://localhost/media/';
+        $defaultLogoFile = 'logo.jpg';
+        $defaultPath = 'logo/default/' . $defaultLogoFile;
+        $this->mediaDirectory->writeFile($defaultPath, '');
+        $blockArguments = ['data' =>
+            ['logoPathResolver' => $this->objectManager->get(LogoPathResolverDefault::class)]
+        ];
+        /** @var Logo $block */
+        $block = $this->objectManager->create(LayoutInterface::class)
+            ->createBlock(Logo::class, 'logo', $blockArguments);
+        $this->assertSame($host . $defaultPath, $block->getLogoSrc());
+        $blockArguments = ['data' =>
+            ['logoPathResolver' => $this->objectManager->get(LogoPathResolverSales::class)]
+        ];
+        /** @var Logo $block */
+        $block = $this->objectManager->create(LayoutInterface::class)
+            ->createBlock(Logo::class, 'logo', $blockArguments);
+        $this->assertSame($host . $defaultPath, $block->getLogoSrc());
+        $this->mediaDirectory->delete($defaultPath);
+    }
 }