class ViewsThemeIntegrationTest

class ViewsThemeIntegrationTest extends ViewTestBase {
  
  /**
   * Views used by this test.
   *
   * @var array
   */
  public static $testViews = [
    'test_page_display',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * {@inheritdoc}
   *
   * We need theme_test for testing against test_basetheme and test_subtheme.
   *
   * @var array
   *
   * {@inheritdoc}
   */
  protected static $modules = [
    'views',
    'theme_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp($import_test_views = TRUE, $modules = [
    'views_test_config',
  ]) : void {
    parent::setUp($import_test_views, $modules);
    $this->enableViewsTestModule();
  }
  
  /**
   * Tests pre_render and post_render hooks in a theme and sub-theme.
   */
  public function testThemedViewPage() {
    \Drupal::service('theme_installer')->install([
      'test_basetheme',
      'test_subtheme',
    ]);
    // Make base theme default then test for hook invocations.
    $this->config('system.theme')
      ->set('default', 'test_basetheme')
      ->save();
    $this->assertEquals('test_basetheme', $this->config('system.theme')
      ->get('default'));
    // Make sure a views rendered page is touched.
    $this->drupalGet('test_page_display_200');
    $this->assertSession()
      ->responseContains("test_basetheme_views_pre_render");
    $this->assertSession()
      ->responseContains("test_basetheme_views_post_render");
    // Make sub theme default to test for hook invocation
    // from both sub and base theme.
    $this->config('system.theme')
      ->set('default', 'test_subtheme')
      ->save();
    $this->assertEquals('test_subtheme', $this->config('system.theme')
      ->get('default'));
    // Make sure a views rendered page is touched.
    $this->drupalGet('test_page_display_200');
    $this->assertSession()
      ->responseContains("test_subtheme_views_pre_render");
    $this->assertSession()
      ->responseContains("test_subtheme_views_post_render");
    $this->assertSession()
      ->responseContains("test_basetheme_views_pre_render");
    $this->assertSession()
      ->responseContains("test_basetheme_views_post_render");
    // Verify that the views group title is added.
    $this->assertSession()
      ->responseContains('<em class="placeholder">' . count($this->dataSet()) . '</em> items found.');
  }

}