Issue #3046171 by claudiu.cristea, Lendude: Convert FilterCaptionTwigDebugTest into a Kernel test

(cherry picked from commit 01f76ced)

core/modules/filter/tests/src/Functional/FilterCaptionTwigDebugTest.php → core/modules/filter/tests/src/Kernel/FilterCaptionTwigDebugTest.php

 <?php
 
-namespace Drupal\Tests\filter\Functional;
+namespace Drupal\Tests\filter\Kernel;
 
+use Drupal\Core\DependencyInjection\ContainerBuilder;
 use Drupal\Core\Render\RenderContext;
-use Drupal\Tests\BrowserTestBase;
 use Drupal\filter\FilterPluginCollection;
+use Drupal\KernelTests\KernelTestBase;
 
 /**
  * Tests the caption filter with Twig debugging on.
  *
  * @group filter
  */
-class FilterCaptionTwigDebugTest extends BrowserTestBase {
-
-  /**
-   * Modules to enable.
-   *
-   * @var array
-   */
-  public static $modules = ['system', 'filter'];
-
-  /**
-   * @var \Drupal\filter\Plugin\FilterInterface[]
-   */
-  protected $filters;
-
-  /**
-   * Enables Twig debugging.
-   */
-  protected function debugOn() {
-    // Enable debug, rebuild the service container, and clear all caches.
-    $parameters = $this->container->getParameter('twig.config');
-    if (!$parameters['debug']) {
-      $parameters['debug'] = TRUE;
-      $this->setContainerParameter('twig.config', $parameters);
-      $this->rebuildContainer();
-      $this->resetAll();
-    }
-  }
-
-  /**
-   * Disables Twig debugging.
-   */
-  protected function debugOff() {
-    // Disable debug, rebuild the service container, and clear all caches.
-    $parameters = $this->container->getParameter('twig.config');
-    if ($parameters['debug']) {
-      $parameters['debug'] = FALSE;
-      $this->setContainerParameter('twig.config', $parameters);
-      $this->rebuildContainer();
-      $this->resetAll();
-    }
-  }
+class FilterCaptionTwigDebugTest extends KernelTestBase {
 
   /**
    * {@inheritdoc}
    */
-  protected function setUp() {
-    parent::setUp();
-
-    $this->debugOn();
-
-    $manager = $this->container->get('plugin.manager.filter');
-    $bag = new FilterPluginCollection($manager, []);
-    $this->filters = $bag->getAll();
-  }
+  protected static $modules = ['filter'];
 
   /**
    * {@inheritdoc}
    */
-  protected function tearDown() {
-    $this->debugOff();
+  public function register(ContainerBuilder $container) {
+    parent::register($container);
+    // Enable Twig debugging.
+    $parameters = $container->getParameter('twig.config');
+    $parameters['debug'] = TRUE;
+    $container->setParameter('twig.config', $parameters);
   }
 
   /**
    * Test the caption filter with Twig debugging on.
    */
   public function testCaptionFilter() {
-    /** @var \Drupal\Core\Render\RendererInterface $renderer */
-    $renderer = \Drupal::service('renderer');
-    $filter = $this->filters['filter_caption'];
+    $manager = $this->container->get('plugin.manager.filter');
+    $bag = new FilterPluginCollection($manager, []);
+    $filter = $bag->get('filter_caption');
+
+    $renderer = $this->container->get('renderer');
 
     $test = function ($input) use ($filter, $renderer) {
       return $renderer->executeInRenderContext(new RenderContext(), function () use ($input, $filter) {
@@ -90,15 +49,14 @@ public function testCaptionFilter() {
     // No data-caption attribute.
     $input = '<img src="llama.jpg" />';
     $expected = $input;
-    $this->assertIdentical($expected, $test($input)->getProcessedText());
+    $this->assertEquals($expected, $test($input)->getProcessedText());
 
     // Data-caption attribute.
     $input = '<img src="llama.jpg" data-caption="Loquacious llama!" />';
     $expected = '<img src="llama.jpg" /><figcaption>Loquacious llama!</figcaption>';
-    $output = $test($input);
-    $output = $output->getProcessedText();
-    $this->assertTrue(strpos($output, $expected) !== FALSE, "\"$output\" contains \"$expected\"");
-    $this->assertTrue(strpos($output, '<!-- THEME HOOK: \'filter_caption\' -->') !== FALSE, 'filter_caption theme hook debug comment is present.');
+    $output = $test($input)->getProcessedText();
+    $this->assertContains($expected, $output);
+    $this->assertContains("<!-- THEME HOOK: 'filter_caption' -->", $output);
   }
 
 }