ThemeExtensionListTest.php

<?php

namespace Drupal\Tests\Core\Extension;

use Drupal\Core\Cache\MemoryBackend;
use Drupal\Core\Cache\NullBackend;
use Drupal\Core\Extension\Extension;
use Drupal\Core\Extension\ExtensionDiscovery;
use Drupal\Core\Extension\InfoParser;
use Drupal\Core\Extension\InfoParserInterface;
use Drupal\Core\Extension\ModuleHandlerInterface;
use Drupal\Core\Extension\ThemeEngineExtensionList;
use Drupal\Core\Extension\ThemeExtensionList;
use Drupal\Core\KeyValueStore\KeyValueMemoryFactory;
use Drupal\Core\Lock\NullLockBackend;
use Drupal\Core\State\State;
use Drupal\Tests\UnitTestCase;
use Prophecy\Argument;

/**
 * @coversDefaultClass \Drupal\Core\Extension\ThemeExtensionList
 * @group Extension
 */
class ThemeExtensionListTest extends UnitTestCase {
    
    /**
     * Tests rebuild the theme data with theme parents.
     */
    public function testRebuildThemeDataWithThemeParents() {
        $extension_discovery = $this->prophesize(ExtensionDiscovery::class);
        $extension_discovery->scan('theme')
            ->willReturn([
            'test_subtheme' => new Extension($this->root, 'theme', 'core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml', 'test_subtheme.info.yml'),
            'test_basetheme' => new Extension($this->root, 'theme', 'core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml', 'test_basetheme.info.yml'),
        ]);
        $extension_discovery->scan('theme_engine')
            ->willReturn([
            'twig' => new Extension($this->root, 'theme_engine', 'core/themes/engines/twig/twig.info.yml', 'twig.engine'),
        ]);
        // Verify that info parser is called with the specified paths.
        $argument_condition = function ($path) {
            return in_array($path, [
                'core/modules/system/tests/themes/test_subtheme/test_subtheme.info.yml',
                'core/modules/system/tests/themes/test_basetheme/test_basetheme.info.yml',
                'core/themes/engines/twig/twig.info.yml',
            ], TRUE);
        };
        $info_parser = $this->prophesize(InfoParserInterface::class);
        $root = $this->root;
        $info_parser->parse(Argument::that($argument_condition))
            ->shouldBeCalled()
            ->will(function ($file) use ($root) {
            $info_parser = new InfoParser($root);
            return $info_parser->parse($root . '/' . $file[0]);
        });
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        $module_handler->buildModuleDependencies(Argument::type('array'))
            ->willReturnArgument(0);
        $module_handler->alter('system_info', Argument::type('array'), Argument::type(Extension::class), Argument::any())
            ->shouldBeCalled();
        $state = new State(new KeyValueMemoryFactory(), new MemoryBackend(), new NullLockBackend());
        $config_factory = $this->getConfigFactoryStub([
            'core.extension' => [
                'module' => [],
                'theme' => [],
                'disabled' => [
                    'theme' => [],
                ],
                'theme_engine' => '',
            ],
        ]);
        $theme_engine_list = new TestThemeEngineExtensionList($this->root, 'theme_engine', new NullBackend('test'), $info_parser->reveal(), $module_handler->reveal(), $state, $config_factory, 'testing');
        $theme_engine_list->setExtensionDiscovery($extension_discovery->reveal());
        $theme_list = new TestThemeExtensionList($this->root, 'theme', new NullBackend('test'), $info_parser->reveal(), $module_handler->reveal(), $state, $config_factory, $theme_engine_list, 'testing');
        $theme_list->setExtensionDiscovery($extension_discovery->reveal());
        $theme_data = $theme_list->reset()
            ->getList();
        $this->assertCount(2, $theme_data);
        $info_basetheme = $theme_data['test_basetheme'];
        $info_subtheme = $theme_data['test_subtheme'];
        // Ensure some basic properties.
        $this->assertInstanceOf('Drupal\\Core\\Extension\\Extension', $info_basetheme);
        $this->assertEquals('test_basetheme', $info_basetheme->getName());
        $this->assertInstanceOf('Drupal\\Core\\Extension\\Extension', $info_subtheme);
        $this->assertEquals('test_subtheme', $info_subtheme->getName());
        // Test the parent/child-theme properties.
        $info_subtheme->info['base theme'] = 'test_basetheme';
        $info_basetheme->sub_themes = [
            'test_subtheme',
        ];
        $this->assertEquals('core/themes/engines/twig/twig.engine', $info_basetheme->owner);
        $this->assertEquals('twig', $info_basetheme->prefix);
        $this->assertEquals('core/themes/engines/twig/twig.engine', $info_subtheme->owner);
        $this->assertEquals('twig', $info_subtheme->prefix);
    }
    
    /**
     * Tests getting the base themes for a set a defines themes.
     *
     * @param array $themes
     *   An array of available themes, keyed by the theme name.
     * @param string $theme
     *   The theme name to find all its base themes.
     * @param array $expected
     *   The expected base themes.
     *
     * @dataProvider providerTestGetBaseThemes
     */
    public function testGetBaseThemes(array $themes, $theme, array $expected) {
        // Mocks and stubs.
        $module_handler = $this->prophesize(ModuleHandlerInterface::class);
        $state = new State(new KeyValueMemoryFactory(), new MemoryBackend(), new NullLockBackend());
        $config_factory = $this->getConfigFactoryStub([]);
        $theme_engine_list = $this->prophesize(ThemeEngineExtensionList::class);
        $theme_listing = new ThemeExtensionList($this->root, 'theme', new NullBackend('test'), new InfoParser($this->root), $module_handler->reveal(), $state, $config_factory, $theme_engine_list->reveal(), 'test');
        $base_themes = $theme_listing->getBaseThemes($themes, $theme);
        $this->assertEquals($expected, $base_themes);
    }
    
    /**
     * Provides test data for testGetBaseThemes.
     *
     * @return array
     *   An array of theme test data.
     */
    public function providerTestGetBaseThemes() {
        $data = [];
        // Tests a theme without any base theme.
        $themes = [];
        $themes['test_1'] = (object) [
            'name' => 'test_1',
            'info' => [
                'name' => 'test_1',
            ],
        ];
        $data[] = [
            $themes,
            'test_1',
            [],
        ];
        // Tests a theme with a non existing base theme.
        $themes = [];
        $themes['test_1'] = (object) [
            'name' => 'test_1',
            'info' => [
                'name' => 'test_1',
                'base theme' => 'test_2',
            ],
        ];
        $data[] = [
            $themes,
            'test_1',
            [
                'test_2' => NULL,
            ],
        ];
        // Tests a theme with a single existing base theme.
        $themes = [];
        $themes['test_1'] = (object) [
            'name' => 'test_1',
            'info' => [
                'name' => 'test_1',
                'base theme' => 'test_2',
            ],
        ];
        $themes['test_2'] = (object) [
            'name' => 'test_2',
            'info' => [
                'name' => 'test_2',
            ],
        ];
        $data[] = [
            $themes,
            'test_1',
            [
                'test_2' => 'test_2',
            ],
        ];
        // Tests a theme with multiple base themes.
        $themes = [];
        $themes['test_1'] = (object) [
            'name' => 'test_1',
            'info' => [
                'name' => 'test_1',
                'base theme' => 'test_2',
            ],
        ];
        $themes['test_2'] = (object) [
            'name' => 'test_2',
            'info' => [
                'name' => 'test_2',
                'base theme' => 'test_3',
            ],
        ];
        $themes['test_3'] = (object) [
            'name' => 'test_3',
            'info' => [
                'name' => 'test_3',
            ],
        ];
        $data[] = [
            $themes,
            'test_1',
            [
                'test_2' => 'test_2',
                'test_3' => 'test_3',
            ],
        ];
        return $data;
    }

}

/**
 * Trait that allows extension discovery to be set.
 */
trait SettableDiscoveryExtensionListTrait {
    
    /**
     * 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.
     */
    public function setExtensionDiscovery(ExtensionDiscovery $discovery) {
        $this->extensionDiscovery = $discovery;
    }
    
    /**
     * {@inheritdoc}
     */
    public function getExtensionDiscovery() {
        return $this->extensionDiscovery;
    }

}

/**
 * Test theme extension list class.
 */
class TestThemeExtensionList extends ThemeExtensionList {
    use SettableDiscoveryExtensionListTrait;

}

/**
 * Test theme engine extension list class.
 */
class TestThemeEngineExtensionList extends ThemeEngineExtensionList {
    use SettableDiscoveryExtensionListTrait;

}
if (!defined('DRUPAL_MINIMUM_PHP')) {
    define('DRUPAL_MINIMUM_PHP', '5.5.9');
}