class ThemeSettingsFormTest

class ThemeSettingsFormTest extends WebDriverTestBase {
    use TestFileCreationTrait;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'file',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $admin = $this->drupalCreateUser([
            'administer themes',
        ]);
        $this->drupalLogin($admin);
    }
    
    /**
     * Tests that submission handler works correctly.
     *
     * @dataProvider providerTestFormSettingsSubmissionHandler
     */
    public function testFormSettingsSubmissionHandler($theme) {
        \Drupal::service('theme_installer')->install([
            $theme,
        ]);
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->drupalGet("admin/appearance/settings/{$theme}");
        // Add a new managed file.
        $file = current($this->getTestFiles('image'));
        $image_file_path = \Drupal::service('file_system')->realpath($file->uri);
        $page->attachFileToField('files[custom_logo]', $image_file_path);
        $assert_session->waitForButton('custom_logo_remove_button');
        // Assert the new file is uploaded as temporary. This file should not be
        // saved as permanent if settings are not submitted.
        $image_field = $this->assertSession()
            ->hiddenFieldExists('custom_logo[fids]');
        $file = File::load($image_field->getValue());
        $this->assertFalse($file->isPermanent());
        $page->pressButton('Save configuration');
        \Drupal::entityTypeManager()->getStorage('file')
            ->resetCache();
        // Assert the uploaded file is saved as permanent.
        $image_field = $this->assertSession()
            ->hiddenFieldExists('custom_logo[fids]');
        $file = File::load($image_field->getValue());
        $this->assertTrue($file->isPermanent());
    }
    
    /**
     * Provides test data for ::testFormSettingsSubmissionHandler().
     */
    public function providerTestFormSettingsSubmissionHandler() {
        return [
            'test theme.theme' => [
                'test_theme_theme',
            ],
            'test theme-settings.php' => [
                'test_theme_settings',
            ],
        ];
    }

}