public function ThemeSuggestionsAlterTest::testTemplateSuggestionsAlter in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/system/tests/src/Functional/Theme/ThemeSuggestionsAlterTest.php \Drupal\Tests\system\Functional\Theme\ThemeSuggestionsAlterTest::testTemplateSuggestionsAlter()

Tests that theme suggestion alter hooks work for templates.

File

core/modules/system/tests/src/Functional/Theme/ThemeSuggestionsAlterTest.php, line 74

Class

ThemeSuggestionsAlterTest

Tests theme suggestion alter hooks.

Namespace

Drupal\Tests\system\Functional\Theme

Code

public function testTemplateSuggestionsAlter() {
  $this
    ->drupalGet('theme-test/suggestion-alter');
  $this
    ->assertSession()
    ->pageTextContains('Original template for testing hook_theme_suggestions_HOOK_alter().');

  // Install test_theme and test that themes can alter template suggestions.
  $this
    ->config('system.theme')
    ->set('default', 'test_theme')
    ->save();
  $this
    ->drupalGet('theme-test/suggestion-alter');
  $this
    ->assertSession()
    ->pageTextContains('Template overridden based on new theme suggestion provided by the test_theme theme via hook_theme_suggestions_HOOK_alter().');

  // Enable the theme_suggestions_test module to test modules implementing
  // suggestions alter hooks.
  \Drupal::service('module_installer')
    ->install([
    'theme_suggestions_test',
  ]);
  $this
    ->resetAll();
  $this
    ->drupalGet('theme-test/suggestion-alter');
  $this
    ->assertSession()
    ->pageTextContains('Template overridden based on new theme suggestion provided by a module via hook_theme_suggestions_HOOK_alter().');
}