<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

use Magento\Eav\Api\AttributeRepositoryInterface;
use Magento\TestFramework\Helper\Bootstrap;

$eavConfig = Bootstrap::getObjectManager()->get(\Magento\Eav\Model\Config::class);
$firstAttribute = $eavConfig->getAttribute('catalog_product', 'test_configurable_first');

$eavConfig->clear();

/** @var $installer \Magento\Catalog\Setup\CategorySetup */
$installer = Bootstrap::getObjectManager()->create(\Magento\Catalog\Setup\CategorySetup::class);

if (!$firstAttribute->getId()) {

    /** @var $attribute \Magento\Catalog\Model\ResourceModel\Eav\Attribute */
    $attribute = Bootstrap::getObjectManager()->create(
        \Magento\Catalog\Model\ResourceModel\Eav\Attribute::class
    );

    /** @var AttributeRepositoryInterface $attributeRepository */
    $attributeRepository = Bootstrap::getObjectManager()->create(AttributeRepositoryInterface::class);

    $firstAttribute->setData(
        [
            'attribute_code' => 'test_configurable_first',
            'entity_type_id' => $installer->getEntityTypeId('catalog_product'),
            'is_global' => 1,
            'is_user_defined' => 1,
            'frontend_input' => 'select',
            'is_unique' => 0,
            'is_required' => 0,
            'is_searchable' => 0,
            'is_visible_in_advanced_search' => 0,
            'is_comparable' => 0,
            'is_filterable' => 0,
            'is_filterable_in_search' => 0,
            'is_used_for_promo_rules' => 0,
            'is_html_allowed_on_front' => 1,
            'is_visible_on_front' => 0,
            'used_in_product_listing' => 0,
            'used_for_sort_by' => 0,
            'frontend_label' => ['Test Configurable First'],
            'backend_type' => 'int',
            'option' => [
                'value' => [
                    'first_option_0' => ['First Option 1'],
                    'first_option_1' => ['First Option 2'],
                    'first_option_2' => ['First Option 3'],
                    'first_option_3' => ['First Option 4']
                ],
                'order' => ['first_option_0' => 1, 'first_option_1' => 2, 'first_option_2' => 3, 'first_option_3' => 4],
            ],
        ]
    );

    $attributeRepository->save($firstAttribute);

    /* Assign attribute to attribute set */
    $installer->addAttributeToGroup('catalog_product', 'Default', 'General', $firstAttribute->getId());
}

$eavConfig->clear();