Added clearCaches method.

core/profiles/demo_umami/tests/src/FunctionalJavascript/VocabularyAdminPerformanceTest.php

@@ -5,6 +5,7 @@
 namespace Drupal\Tests\demo_umami\FunctionalJavascript;
 
 use Drupal\block\Entity\Block;
+use Drupal\Core\Cache\Cache;
 use Drupal\FunctionalJavascriptTests\PerformanceTestBase;
 
 /**
@@ -117,4 +118,13 @@ protected function assertTermInVocabularyAdminPage(string $term_name = 'Baked'):
     $this->assertSession()->elementTextContains('xpath', '//table[@id="taxonomy"]', $term_name);
   }
 
+  /**
+   * Clears all cache bins.
+   */
+  protected function clearCaches(): void {
+    foreach (Cache::getBins() as $bin) {
+      $bin->deleteAll();
+    }
+  }
+
 }