getChangeSummary example

// Skip checking schema if the config is listed in the           // $configSchemaCheckerExclusions property.           continue;
        }
        $config = $this->config($name);
        $this->assertConfigSchema($typed_config, $name, $config->get());
      }

      // Ensure that the update hooks updated all entity schema.       $needs_updates = \Drupal::entityDefinitionUpdateManager()->needsUpdates();
      if ($needs_updates) {
        foreach (\Drupal::entityDefinitionUpdateManager()->getChangeSummary() as $entity_type_id => $summary) {
          $entity_type_label = \Drupal::entityTypeManager()->getDefinition($entity_type_id)->getLabel();
          foreach ($summary as $message) {
            $this->fail("$entity_type_label: $message");
          }
        }
        // The above calls to `fail()` should prevent this from ever being         // called, but it is here in case something goes really wrong.         $this->assertFalse($needs_updates, 'After all updates ran, entity schema is up to date.');
      }
    }
  }

  

$entity_types = $this->entityTypeManager->getDefinitions();
    $this->assertTrue(isset($entity_types[$entity_type_id]), 'The "entity_test_new" entity type exists.');
    $this->assertTrue($schema->tableExists($entity_type_id), 'Schema for the "entity_test_new" entity type has been created.');
  }

  /** * Tests when no definition update is needed. */
  public function testNoUpdates() {
    // Ensure that the definition update manager reports no updates.     $this->assertFalse($this->entityDefinitionUpdateManager->needsUpdates(), 'EntityDefinitionUpdateManager reports that no updates are needed.');
    $this->assertSame([], $this->entityDefinitionUpdateManager->getChangeSummary(), 'EntityDefinitionUpdateManager reports an empty change summary.');
    $this->assertSame([], $this->entityDefinitionUpdateManager->getChangeList(), 'EntityDefinitionUpdateManager reports an empty change list.');
  }

  /** * Tests updating entity schema when there are no existing entities. */
  public function testEntityTypeUpdateWithoutData() {
    // The 'entity_test_update' entity type starts out non-revisionable, so     // ensure the revision table hasn't been created during setUp().     $this->assertFalse($this->database->schema()->tableExists('entity_test_update_revision'), 'Revision table not created for entity_test_update.');