class DateTimeHandlerTestBase

abstract class DateTimeHandlerTestBase extends HandlerTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $modules = [
        'datetime_test',
        'node',
        'datetime',
    ];
    
    /**
     * Name of the field.
     *
     * Note, this is used in the default test view.
     *
     * @var string
     */
    protected static $field_name = 'field_date';
    
    /**
     * Nodes to test.
     *
     * @var \Drupal\node\NodeInterface[]
     */
    protected $nodes = [];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE) {
        parent::setUp($import_test_views);
        // Add a date field to page nodes.
        $node_type = NodeType::create([
            'type' => 'page',
            'name' => 'page',
        ]);
        $node_type->save();
        $fieldStorage = FieldStorageConfig::create([
            'field_name' => static::$field_name,
            'entity_type' => 'node',
            'type' => 'datetime',
            'settings' => [
                'datetime_type' => DateTimeItem::DATETIME_TYPE_DATETIME,
            ],
        ]);
        $fieldStorage->save();
        $field = FieldConfig::create([
            'field_storage' => $fieldStorage,
            'bundle' => 'page',
            'required' => TRUE,
        ]);
        $field->save();
        // Views needs to be aware of the new field.
        $this->container
            ->get('views.views_data')
            ->clear();
        // Set column map.
        $this->map = [
            'nid' => 'nid',
        ];
        // Load test views.
        ViewTestData::createTestViews(get_class($this), [
            'datetime_test',
        ]);
    }

}