class ArgumentTransformTermTest

class ArgumentTransformTermTest extends TaxonomyTestBase {

  /**
   * {@inheritdoc}
   */
  public static $testViews = [
    'test_argument_transform_term',
  ];

  /**
   * Tests term argument transformation of hyphens and spaces.
   *
   * @dataProvider termArgumentTransformationProvider
   *
   * @param string $name
   *   The name of the taxonomy term to use for the test.
   */
  public function testTermArgumentTransformation($name) {

    /** @var \Drupal\taxonomy\TermInterface $term */
    $term = $this
      ->createTerm([
      'name' => $name,
    ]);

    /** @var \Drupal\views\ViewExecutable $view */
    $view = Views::getView('test_argument_transform_term');
    $view
      ->initHandlers();

    /** @var string $hyphenated_term */
    $hyphenated_term = str_replace(' ', '-', $term
      ->label());
    $this
      ->assertTrue($view->argument['tid']
      ->setArgument($hyphenated_term));

    // Assert hyphens are converted back to spaces.
    $this
      ->assertEquals($term
      ->label(), $view->argument['tid']->argument);
  }

  /**
   * Provides data for testTermArgumentTransformation().
   *
   * @return array[]
   *   Test data.
   */
  public static function termArgumentTransformationProvider() {
    return [
      'space in the middle' => [
        'name' => Random::machineName() . ' ' . Random::machineName(),
      ],
      'space at the start' => [
        'name' => ' ' . Random::machineName(),
      ],
      'space at the end' => [
        'name' => Random::machineName() . ' ',
      ],
    ];
  }

}