ArgumentDefaultTest.php

1. 9.x drupal/core/modules/views/lib/Drupal/views/Tests/User/ArgumentDefaultTest.php
2. 9.x drupal/core/modules/views/lib/Drupal/views/Tests/Plugin/ArgumentDefaultTest.php
3. 9.x drupal/core/modules/views/tests/views_test_data/lib/Drupal/views_test_data/Plugin/views/argument_default/ArgumentDefaultTest.php

<?php

/**
 * @file
 * Definition of Drupal\views_test_data\Plugin\views\argument_default\ArgumentDefaultTest.
 */
namespace Drupal\views_test_data\Plugin\views\argument_default;

use Drupal\views\Plugin\views\argument_default\ArgumentDefaultPluginBase;
use Drupal\Core\Annotation\Plugin;
use Drupal\Core\Annotation\Translation;

/**
 * Defines a argument default test plugin.
 *
 * @Plugin(
 *   id = "argument_default_test",
 *   title = @Translation("Argument default test")
 * )
 */
class ArgumentDefaultTest extends ArgumentDefaultPluginBase {

  /**
   * Overrides Drupal\views\Plugin\views\argument_default\ArgumentDefaultPluginBase::defineOptions().
   */
  protected function defineOptions() {
    $options = parent::defineOptions();
    $options['value'] = array(
      'default' => '',
    );
    return $options;
  }

  /**
   * Overrides Drupal\views\Plugin\views\argument_default\ArgumentDefaultPluginBase::get_argument().
   */
  public function get_argument() {
    return $this->options['value'];
  }

}