function ThemeTest::testSuggestionPreprocessForDefaults
Ensures suggestion preprocess functions run for default implementations.
The theme hook used by this test has its base preprocess function in a separate file, so this test also ensures that the file is correctly loaded when needed.
File
- 
              core/
modules/ system/ tests/ src/ Functional/ Theme/ ThemeTest.php, line 181  
Class
- ThemeTest
 - Tests low-level theme functions.
 
Namespace
Drupal\Tests\system\Functional\ThemeCode
public function testSuggestionPreprocessForDefaults() : void {
  $this->config('system.theme')
    ->set('default', 'test_theme')
    ->save();
  // Test with both an unprimed and primed theme registry.
  \Drupal::service('theme.registry')->reset();
  for ($i = 0; $i < 2; $i++) {
    $this->drupalGet('theme-test/preprocess-suggestions');
    $items = $this->cssSelect('.suggestion');
    $expected_values = [
      'Suggestion',
      'Kitten',
      'Monkey',
      'Kitten',
      'Flamingo',
    ];
    foreach ($expected_values as $key => $value) {
      $this->assertEquals((string) $value, $items[$key]->getText());
    }
  }
}
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