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- <?php
- namespace Drupal\Core\Test;
- use Drupal\Core\Cache\Cache;
- /**
- * Provides a method to refresh in-memory configuration and state information.
- */
- trait RefreshVariablesTrait {
- /**
- * Refreshes in-memory configuration and state information.
- *
- * Useful after a page request is made that changes configuration or state in
- * a different thread.
- *
- * In other words calling a settings page with $this->drupalPostForm() with a
- * changed value would update configuration to reflect that change, but in the
- * thread that made the call (thread running the test) the changed values
- * would not be picked up.
- *
- * This method clears the cache and loads a fresh copy.
- */
- protected function refreshVariables() {
- // Clear the tag cache.
- \Drupal::service('cache_tags.invalidator')->resetChecksums();
- foreach (Cache::getBins() as $backend) {
- if (is_callable([$backend, 'reset'])) {
- $backend->reset();
- }
- }
- \Drupal::service('config.factory')->reset();
- \Drupal::service('state')->resetCache();
- }
- }
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