public function ThemeEarlyInitializationTest::testRequestListener in Drupal 10

Same name and namespace in other branches

1. 8 core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php \Drupal\Tests\system\Functional\Theme\ThemeEarlyInitializationTest::testRequestListener()
2. 9 core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php \Drupal\Tests\system\Functional\Theme\ThemeEarlyInitializationTest::testRequestListener()

Tests that the theme system can generate output in a request listener.

File

core/modules/system/tests/src/Functional/Theme/ThemeEarlyInitializationTest.php, line 30

Class

ThemeEarlyInitializationTest

Tests that the theme system can be correctly initialized early in the page request.

Namespace

Drupal\Tests\system\Functional\Theme

Code

public function testRequestListener() {
  $this
    ->drupalGet('theme-test/request-listener');

  // Verify that themed output generated in the request listener appears.
  $this
    ->assertSession()
    ->responseContains('Themed output generated in a KernelEvents::REQUEST listener');

  // Verify that the default theme's CSS still appears even though the theme
  // system was initialized early.
  $this
    ->assertSession()
    ->responseContains('classy/css/components/action-links.css');
}