BaseThemeMissingTest.php

<?php

namespace Drupal\KernelTests\Core\Theme;

use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\Core\Extension\ExtensionDiscovery;
use Drupal\Core\Extension\InfoParserException;
use Drupal\Core\Extension\ThemeExtensionList;
use Drupal\KernelTests\KernelTestBase;
use org\bovigo\vfs\vfsStream;

/**
 * Tests the behavior of a theme when base_theme info key is missing.
 *
 * @group Theme
 */
class BaseThemeMissingTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'system',
    ];
    
    /**
     * The theme installer.
     *
     * @var \Drupal\Core\Extension\ThemeInstallerInterface
     */
    protected $themeInstaller;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->themeInstaller = $this->container
            ->get('theme_installer');
    }
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) {
        parent::register($container);
        $container->getDefinition('extension.list.theme')
            ->setClass(VfsThemeExtensionList::class);
    }
    
    /**
     * {@inheritdoc}
     */
    protected function setUpFilesystem() {
        parent::setUpFilesystem();
        $vfs_root = vfsStream::setup('core');
        vfsStream::create([
            'themes' => [
                'test_missing_base_theme' => [
                    'test_missing_base_theme.info.yml' => file_get_contents(DRUPAL_ROOT . '/core/tests/fixtures/test_missing_base_theme/test_missing_base_theme.info.yml'),
                    'test_missing_base_theme.theme' => file_get_contents(DRUPAL_ROOT . '/core/tests/fixtures/test_missing_base_theme/test_missing_base_theme.theme'),
                ],
            ],
        ], $vfs_root);
    }
    
    /**
     * Tests exception is thrown.
     */
    public function testMissingBaseThemeException() {
        $this->container
            ->get('extension.list.theme')
            ->setExtensionDiscovery(new ExtensionDiscovery('vfs://core'));
        $this->expectException(InfoParserException::class);
        $this->expectExceptionMessage('Missing required key ("base theme") in themes/test_missing_base_theme/test_missing_base_theme.info.yml, see https://www.drupal.org/node/3066038');
        $this->themeInstaller
            ->install([
            'test_missing_base_theme',
        ]);
    }

}

/**
 * Test theme extension list class.
 */
class VfsThemeExtensionList extends ThemeExtensionList {
    
    /**
     * The extension discovery for this extension list.
     *
     * @var \Drupal\Core\Extension\ExtensionDiscovery
     */
    protected $extensionDiscovery;
    
    /**
     * Sets the extension discovery.
     *
     * @param \Drupal\Core\Extension\ExtensionDiscovery $discovery
     *   The extension discovery.
     *
     * @return self
     */
    public function setExtensionDiscovery(ExtensionDiscovery $discovery) {
        $this->extensionDiscovery = $discovery;
        return $this;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getExtensionDiscovery() {
        return $this->extensionDiscovery;
    }

}