function RendererRecursionTest::testRenderRecursionWithNestedRenderInIsolation

::renderInIsolation() may be called from anywhere.

Including from inside of another ::renderRoot() call.

@covers ::renderRoot
@covers ::renderInIsolation

File

core/tests/Drupal/Tests/Core/Render/RendererRecursionTest.php, line 103

Class

RendererRecursionTest

@coversDefaultClass \Drupal\Core\Render\Renderer[[api-linebreak]] @group Render

Namespace

Code

public function testRenderRecursionWithNestedRenderInIsolation() : void {
  [
    $complex_child_markup,
    $parent_markup,
    $complex_child_template,
  ] = $this->setUpRenderRecursionComplexElements();
  $renderer = $this->renderer;
  $this->setUpRequest();
  $complex_child = $complex_child_template;
  $callable = function ($elements) use ($renderer, $complex_child) {
    $elements['#markup'] = $renderer->renderInIsolation($complex_child);
    $this->assertEquals('<p>This is a rendered placeholder!</p>', $elements['#markup'], 'Rendered complex child output as expected, with the placeholder replaced.');
    return $elements;
  };
  $page = [
    'content' => [
      '#pre_render' => [
        $callable,
      ],
      '#suffix' => $parent_markup,
    ],
  ];
  $output = $renderer->renderRoot($page);
  $this->assertEquals('<p>This is a rendered placeholder!</p>' . $parent_markup, $output, 'Rendered output as expected, with the placeholder replaced.');
  $this->assertNotContains('test:complex_child', $page['#cache']['tags'], 'Cache tag bubbling not performed.');
  $this->assertEmpty($page['#attached'], 'Asset bubbling not performed.');
}