MultipleFileUploadTest.php

<?php

namespace Drupal\Tests\file\Functional;

use Drupal\Tests\BrowserTestBase;

/**
 * Tests multiple file upload.
 *
 * @group file
 */
class MultipleFileUploadTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'file',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $admin = $this->drupalCreateUser([
            'administer themes',
        ]);
        $this->drupalLogin($admin);
    }
    
    /**
     * Tests multiple file field with all file extensions.
     */
    public function testMultipleFileFieldWithAllFileExtensions() {
        $theme = 'test_theme_settings';
        \Drupal::service('theme_installer')->install([
            $theme,
        ]);
        $this->drupalGet("admin/appearance/settings/{$theme}");
        $edit = [];
        // Create few files with non-typical extensions.
        foreach ([
            'file1.wtf',
            'file2.wtf',
        ] as $i => $file) {
            $file_path = $this->root . "/sites/default/files/simpletest/{$file}";
            file_put_contents($file_path, 'File with non-default extension.', FILE_APPEND | LOCK_EX);
            $edit["files[multi_file][{$i}]"] = $file_path;
        }
        // @todo: Replace after https://www.drupal.org/project/drupal/issues/2917885
        $this->drupalGet("admin/appearance/settings/{$theme}");
        $submit_xpath = $this->assertSession()
            ->buttonExists('Save configuration')
            ->getXpath();
        $client = $this->getSession()
            ->getDriver()
            ->getClient();
        $form = $client->getCrawler()
            ->filterXPath($submit_xpath)
            ->form();
        $client->request($form->getMethod(), $form->getUri(), $form->getPhpValues(), $edit);
        $page = $this->getSession()
            ->getPage();
        $this->assertStringNotContainsString('Only files with the following extensions are allowed', $page->getContent());
        $this->assertStringContainsString('The configuration options have been saved.', $page->getContent());
        $this->assertStringContainsString('file1.wtf', $page->getContent());
        $this->assertStringContainsString('file2.wtf', $page->getContent());
    }

}