public function BaseThemeDefaultDeprecationTest::testStableIsDefault in Drupal 8

Ensures Stable is used by default when no base theme has been defined.

@group legacy @expectedDeprecation There is no `base theme` property specified in the test_stable.info.yml file. The optionality of the `base theme` property is deprecated in drupal:8.8.0 and is removed from drupal:9.0.0. All Drupal 8 themes must add `base theme: stable` to their *.info.yml file for them to continue to work as-is in future versions of Drupal. Drupal 9 requires the `base theme` property to be specified. See https://www.drupal.org/node/3066038

File

core/tests/Drupal/KernelTests/Core/Theme/BaseThemeDefaultDeprecationTest.php, line 86

Class

BaseThemeDefaultDeprecationTest

Tests the behavior of the Stable theme.

Namespace

Drupal\KernelTests\Core\Theme

Code

public function testStableIsDefault() {
  $this->container
    ->get('extension.list.theme')
    ->setExtensionDiscovery(new ExtensionDiscovery('vfs://core'))
    ->setInfoParser(new VfsInfoParser('vfs:/'));
  $this->themeInstaller
    ->install([
    'test_stable',
  ]);
  $this
    ->config('system.theme')
    ->set('default', 'test_stable')
    ->save();
  $theme = $this->themeManager
    ->getActiveTheme();
  $base_themes = $theme
    ->getBaseThemeExtensions();
  $base_theme = reset($base_themes);
  $this
    ->assertTrue($base_theme
    ->getName() == 'stable', "Stable theme is the base theme if a theme hasn't decided to opt out.");
}