Issue #3262359: Don't catalog event subscribers as a way of determining the validity of stored results

tests/src/Kernel/ReadinessValidation/ReadinessValidationManagerTest.php

@@ -163,6 +163,7 @@ class ReadinessValidationManagerTest extends AutomaticUpdatesKernelTestBase {
 
   /**
    * @covers ::runIfNoStoredResults
+   * @covers ::clearStoredResults
    */
   public function testRunIfNeeded(): void {
     $expected_results = array_pop($this->testResults['checker_1']);
@@ -180,9 +181,7 @@ class ReadinessValidationManagerTest extends AutomaticUpdatesKernelTestBase {
 
     // Confirm that the new results will be returned because the checkers will
     // be run if the stored results are deleted.
-    /** @var \Drupal\Core\KeyValueStore\KeyValueStoreInterface $key_value */
-    $key_value = $this->container->get('keyvalue.expirable')->get('automatic_updates');
-    $key_value->delete('readiness_validation_last_run');
+    $manager->clearStoredResults();
     $expected_results = $unexpected_results;
     $manager->runIfNoStoredResults();
     $this->assertCheckerResultsFromManager($expected_results);
@@ -194,24 +193,6 @@ class ReadinessValidationManagerTest extends AutomaticUpdatesKernelTestBase {
     $kernel = $this->container->get('kernel');
     $this->container = $kernel->rebuildContainer();
     $this->assertCheckerResultsFromManager($expected_results);
-
-    // Define a constant flag that will cause the readiness checker
-    // service priority to be altered. This will cause the priority of
-    // 'automatic_updates_test.checker' to change from 2 to 4 which will be now
-    // higher than 'automatic_updates_test2.checker' which has a priority of 3.
-    // Because the list of checker IDs is not identical to the previous checker
-    // run runIfNoStoredValidResults() will run the checkers again.
-    define('PACKAGE_MANAGER_TEST_VALIDATOR_PRIORITY', 1);
-
-    // Rebuild the container to trigger the readiness checker services to be
-    // reordered.
-    $kernel = $this->container->get('kernel');
-    $this->container = $kernel->rebuildContainer();
-    $expected_results = $unexpected_results;
-    /** @var \Drupal\automatic_updates\Validation\ReadinessValidationManager $manager */
-    $manager = $this->container->get('automatic_updates.readiness_validation_manager');
-    $manager->runIfNoStoredResults();
-    $this->assertCheckerResultsFromManager($expected_results);
   }
 
   /**