/**
* Tests opting out of Stable by setting the base theme to false.
*/
public function testWildWest()
{
$this->themeHandler->install(['test_wild_west']);
$this->themeHandler->setDefault('test_wild_west');
$theme = $this->themeManager->getActiveTheme();
/** @var \Drupal\Core\Theme\ActiveTheme $base_theme */
$base_themes = $theme->getBaseThemes();
$this->assertTrue(empty($base_themes), 'No base theme is set when a theme has opted out of using Stable.');
}
