FileUploadHandlerTest.php

<?php

namespace Drupal\Tests\file\Kernel;

use Drupal\Component\Utility\Environment;
use Drupal\file\Upload\UploadedFileInterface;
use Drupal\KernelTests\KernelTestBase;
use Symfony\Component\HttpFoundation\File\Exception\FormSizeFileException;

/**
 * Tests the file upload handler.
 *
 * @group file
 */
class FileUploadHandlerTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'file',
    ];
    
    /**
     * The file upload handler under test.
     *
     * @var \Drupal\file\Upload\FileUploadHandler
     */
    protected $fileUploadHandler;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->fileUploadHandler = $this->container
            ->get('file.upload_handler');
    }
    
    /**
     * Tests file size upload errors.
     */
    public function testFileSaveUploadSingleErrorFormSize() {
        $file_name = $this->randomMachineName();
        $file_info = $this->createMock(UploadedFileInterface::class);
        $file_info->expects($this->once())
            ->method('getError')
            ->willReturn(UPLOAD_ERR_FORM_SIZE);
        $file_info->expects($this->once())
            ->method('getClientOriginalName')
            ->willReturn($file_name);
        $file_info->expects($this->once())
            ->method('getErrorMessage')
            ->willReturn(sprintf('The file "%s" could not be saved because it exceeds %s, the maximum allowed size for uploads.', $file_name, format_size(Environment::getUploadMaxSize())));
        $this->expectException(FormSizeFileException::class);
        $this->expectExceptionMessage(sprintf('The file "%s" could not be saved because it exceeds %s, the maximum allowed size for uploads.', $file_name, format_size(Environment::getUploadMaxSize())));
        $this->fileUploadHandler
            ->handleFileUpload($file_info);
    }

}