function RegistryTest::testSuggestionPreprocessFunctions

Tests the theme registry with suggestions.

File

core/tests/Drupal/KernelTests/Core/Theme/RegistryTest.php, line 109

Class

RegistryTest

Tests the behavior of the ThemeRegistry class.

Namespace

Code

public function testSuggestionPreprocessFunctions() : void {
    $theme_handler = \Drupal::service('theme_handler');
    \Drupal::service('theme_installer')->install([
        'test_theme',
    ]);
    $extension_list = $this->container
        ->get('extension.list.module');
    assert($extension_list instanceof ModuleExtensionList);
    $registry_theme = new Registry($this->root, \Drupal::cache(), \Drupal::lock(), \Drupal::moduleHandler(), $theme_handler, \Drupal::service('theme.initialization'), \Drupal::service('cache.bootstrap'), $extension_list, \Drupal::service('kernel'), 'test_theme');
    $registry_theme->setThemeManager(\Drupal::theme());
    $suggestions = [
        '__kitten',
        '__flamingo',
    ];
    $expected_preprocess_functions = [
        'template_preprocess',
        'theme_test_preprocess_theme_test_preprocess_suggestions',
    ];
    $suggestion = '';
    $hook = 'theme_test_preprocess_suggestions';
    do {
        $hook .= "{$suggestion}";
        $expected_preprocess_functions[] = "test_theme_preprocess_{$hook}";
        $preprocess_functions = $registry_theme->get()[$hook]['preprocess functions'];
        $this->assertSame($expected_preprocess_functions, $preprocess_functions, "{$hook} has correct preprocess functions.");
    } while ($suggestion = array_shift($suggestions));
    $expected_preprocess_functions = [
        'template_preprocess',
        'theme_test_preprocess_theme_test_preprocess_suggestions',
        'test_theme_preprocess_theme_test_preprocess_suggestions',
        'test_theme_preprocess_theme_test_preprocess_suggestions__kitten',
    ];
    $preprocess_functions = $registry_theme->get()['theme_test_preprocess_suggestions__kitten__bearcat']['preprocess functions'];
    $this->assertSame($expected_preprocess_functions, $preprocess_functions, 'Suggestion implemented as a template correctly inherits preprocess functions.');
    $this->assertTrue(isset($registry_theme->get()['theme_test_preprocess_suggestions__kitten__meerkat__tarsier__moose']), 'Preprocess function with an unimplemented lower-level suggestion is added to the registry.');
}