class EntityBundleFieldTest

class EntityBundleFieldTest extends EntityKernelTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'entity_schema_test',
        'entity_test_update',
    ];
    
    /**
     * The module handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * The database connection used.
     *
     * @var \Drupal\Core\Database\Connection
     */
    protected $database;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->installSchema('user', [
            'users_data',
        ]);
        $this->installEntitySchema('entity_test_update');
        $this->moduleHandler = $this->container
            ->get('module_handler');
        $this->database = $this->container
            ->get('database');
    }
    
    /**
     * Tests making use of a custom bundle field.
     */
    public function testCustomBundleFieldUsage() : void {
        entity_test_create_bundle('custom', NULL, 'entity_test_update');
        // Check that an entity with bundle entity_test does not have the custom
        // field.
        $storage = $this->entityTypeManager
            ->getStorage('entity_test_update');
        $entity = $storage->create([
            'type' => 'entity_test_update',
        ]);
        $this->assertFalse($entity->hasField('custom_bundle_field'));
        // Check that the custom bundle has the defined custom field and check
        // saving and deleting of custom field data.
        $entity = $storage->create([
            'type' => 'custom',
        ]);
        $this->assertTrue($entity->hasField('custom_bundle_field'));
        // Ensure that the field exists in the field map.
        $field_map = \Drupal::service('entity_field.manager')->getFieldMap();
        $this->assertEquals([
            'type' => 'string',
            'bundles' => [
                'custom' => 'custom',
            ],
        ], $field_map['entity_test_update']['custom_bundle_field']);
        $entity->custom_bundle_field->value = 'swanky';
        $entity->save();
        $storage->resetCache();
        $entity = $storage->load($entity->id());
        $this->assertEquals('swanky', $entity->custom_bundle_field->value, 'Entity was saved correctly');
        $entity->custom_bundle_field->value = 'cozy';
        $entity->save();
        $storage->resetCache();
        $entity = $storage->load($entity->id());
        $this->assertEquals('cozy', $entity->custom_bundle_field->value, 'Entity was updated correctly.');
        $entity->delete();
        
        /** @var \Drupal\Core\Entity\Sql\DefaultTableMapping $table_mapping */
        $table_mapping = $storage->getTableMapping();
        $table = $table_mapping->getDedicatedDataTableName($entity->getFieldDefinition('custom_bundle_field')
            ->getFieldStorageDefinition());
        $result = $this->database
            ->select($table, 'f')
            ->fields('f')
            ->condition('f.entity_id', $entity->id())
            ->execute();
        $this->assertFalse($result->fetchAssoc(), 'Field data has been deleted');
        // Create another entity to test that values are marked as deleted when a
        // bundle is deleted.
        $entity = $storage->create([
            'type' => 'custom',
            'custom_bundle_field' => 'new',
        ]);
        $entity->save();
        entity_test_delete_bundle('custom', 'entity_test_update');
        $table = $table_mapping->getDedicatedDataTableName($entity->getFieldDefinition('custom_bundle_field')
            ->getFieldStorageDefinition(), TRUE);
        $result = $this->database
            ->select($table, 'f')
            ->condition('f.entity_id', $entity->id())
            ->condition('deleted', 1)
            ->countQuery()
            ->execute();
        $this->assertEquals(1, $result->fetchField(), 'Field data has been deleted');
        // Ensure that the field no longer exists in the field map.
        $field_map = \Drupal::service('entity_field.manager')->getFieldMap();
        $this->assertFalse(isset($field_map['entity_test_update']['custom_bundle_field']));
        // Purge field data, and check that the storage definition has been
        // completely removed once the data is purged.
        field_purge_batch(10);
        $this->assertFalse($this->database
            ->schema()
            ->tableExists($table), 'Custom field table was deleted');
    }

}