AdminNegotiatorTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\user\Unit\Theme;

use Drupal\Core\Entity\EntityTypeManagerInterface;
use Drupal\Core\Routing\AdminContext;
use Drupal\Core\Routing\RouteMatch;
use Drupal\Core\Session\AccountInterface;
use Drupal\Tests\UnitTestCase;
use Drupal\user\Theme\AdminNegotiator;

/**
 * Tests AdminNegotiator class.
 *
 * @group user
 * @coversDefaultClass \Drupal\user\Theme\AdminNegotiator
 */
class AdminNegotiatorTest extends UnitTestCase {

  /**
   * @dataProvider getThemes
   */
  public function testDetermineActiveTheme($admin_theme, $expected) {
    $user = $this
      ->prophesize(AccountInterface::class);
    $config_factory = $this
      ->getConfigFactoryStub([
      'system.theme' => [
        'admin' => $admin_theme,
      ],
    ]);
    $entity_type_manager = $this
      ->prophesize(EntityTypeManagerInterface::class);
    $admin_context = $this
      ->prophesize(AdminContext::class);
    $negotiator = new AdminNegotiator($user
      ->reveal(), $config_factory, $entity_type_manager
      ->reveal(), $admin_context
      ->reveal());
    $route_match = $this
      ->prophesize(RouteMatch::class);
    $this
      ->assertSame($expected, $negotiator
      ->determineActiveTheme($route_match
      ->reveal()));
  }

  /**
   * Provides a list of theme names to test.
   */
  public static function getThemes() {
    return [
      [
        'claro',
        'claro',
      ],
      [
        NULL,
        NULL,
      ],
      [
        '',
        NULL,
      ],
    ];
  }

}