class FrontMatterTest in Drupal 10

Tests Twig front matter support.

@covers \Drupal\Core\Template\Loader\FrontMatterLoaderDecorator @covers \Drupal\Core\Template\FrontMatterSourceDecorator @group Twig

Hierarchy

• class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements ServiceProviderInterface uses \Drupal\Tests\PhpUnitCompatibilityTrait, \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait, AssertContentTrait, ConfigTestTrait, ExtensionListTestTrait, RandomGeneratorTrait, TestRequirementsTrait, PhpUnitWarnings
  • class \Drupal\KernelTests\Core\Theme\FrontMatterTest

File

core/tests/Drupal/KernelTests/Core/Theme/FrontMatterTest.php, line 20

Namespace

Drupal\KernelTests\Core\Theme

class FrontMatterTest extends KernelTestBase {

  /**
   * A broken source.
   */
  const BROKEN_SOURCE = '<div>Hello {{ world</div>';

  /**
   * Twig service.
   *
   * @var \Drupal\Core\Template\TwigEnvironment
   */
  protected $twig;

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->twig = \Drupal::service('twig');
  }

  /**
   * {@inheritdoc}
   */
  public function register(ContainerBuilder $container) {
    parent::register($container);
    $definition = new Definition(FilesystemLoader::class, [
      [
        sys_get_temp_dir(),
      ],
    ]);
    $definition
      ->setPublic(TRUE);
    $container
      ->setDefinition('twig_loader__file_system', $definition)
      ->addTag('twig.loader');
  }

  /**
   * Creates a new temporary Twig file.
   *
   * @param string $content
   *   The contents of the Twig file to save.
   *
   * @return string
   *   The absolute path to the temporary file.
   */
  protected function createTwigTemplate(string $content = '') : string {
    $file = tempnam(sys_get_temp_dir(), 'twig') . ".html.twig";
    file_put_contents($file, $content);
    return $file;
  }

  /**
   * Tests broken front matter.
   *
   * @covers \Drupal\Core\Template\TwigEnvironment::getTemplateMetadata
   * @covers \Drupal\Component\FrontMatter\Exception\FrontMatterParseException
   */
  public function testFrontMatterBroken() {
    $source = "---\ncollection:\n-  key: foo\n  foo: bar\n---\n" . ComponentFrontMatterTest::SOURCE;
    $file = $this
      ->createTwigTemplate($source);
    $this
      ->expectException(SyntaxError::class);
    $this
      ->expectExceptionMessage('An error occurred when attempting to parse front matter data on line 4 in ' . $file);
    $this->twig
      ->getTemplateMetadata(basename($file));
  }

  /**
   * Test Twig template front matter.
   *
   * @param array|null $yaml
   *   The YAML used for metadata in a Twig template.
   * @param int $line
   *   The expected line number where the source code starts.
   * @param string $content
   *   The content to use for testing purposes.
   *
   * @covers \Drupal\Core\Template\TwigEnvironment::compileSource
   * @covers \Drupal\Core\Template\TwigEnvironment::getTemplateMetadata
   *
   * @dataProvider \Drupal\Tests\Component\FrontMatter\FrontMatterTest::providerFrontMatterData
   */
  public function testFrontMatter($yaml, $line, $content = ComponentFrontMatterTest::SOURCE) {

    // Create a temporary Twig template.
    $source = ComponentFrontMatterTest::createFrontMatterSource($yaml, $content);
    $file = $this
      ->createTwigTemplate($source);
    $name = basename($file);

    // Ensure the proper metadata is returned.
    $metadata = $this->twig
      ->getTemplateMetadata($name);
    $this
      ->assertEquals($yaml === NULL ? [] : $yaml, $metadata);

    // Ensure the metadata is never rendered.
    $output = $this->twig
      ->load($name)
      ->render();
    $this
      ->assertEquals($content, $output);

    // Create a temporary Twig template.
    $source = ComponentFrontMatterTest::createFrontMatterSource($yaml, static::BROKEN_SOURCE);
    $file = $this
      ->createTwigTemplate($source);
    $name = basename($file);
    try {
      $this->twig
        ->load($name);
    } catch (Error $error) {
      $this
        ->assertEquals($line, $error
        ->getTemplateLine());
    }

    // Ensure string based templates work too.
    try {
      $this->twig
        ->createTemplate($source)
        ->render();
    } catch (Error $error) {
      $this
        ->assertEquals($line, $error
        ->getTemplateLine());
    }
  }

}