class BackendChainTest

Unit test of the backend chain using the generic cache unit test base.

@group Cache

Hierarchy

• class \Drupal\KernelTests\KernelTestBase extends \Drupal\Core\DependencyInjection\ServiceProviderInterface uses \Drupal\KernelTests\AssertLegacyTrait, \Drupal\KernelTests\AssertContentTrait, \Drupal\Tests\RandomGeneratorTrait, \Drupal\Tests\ConfigTestTrait, \Drupal\Tests\ExtensionListTestTrait, \Drupal\Tests\TestRequirementsTrait, \Drupal\Tests\Traits\PhpUnitWarnings, \Drupal\Tests\PhpUnitCompatibilityTrait, \Symfony\Bridge\PhpUnit\ExpectDeprecationTrait implements \PHPUnit\Framework\TestCase
  • class \Drupal\KernelTests\Core\Cache\GenericCacheBackendUnitTestBase implements \Drupal\KernelTests\KernelTestBase
    • class \Drupal\KernelTests\Core\Cache\BackendChainTest implements \Drupal\KernelTests\Core\Cache\GenericCacheBackendUnitTestBase

Expanded class hierarchy of BackendChainTest

File

core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php, line 13

Namespace

class BackendChainTest extends GenericCacheBackendUnitTestBase {
  protected function createCacheBackend($bin) {
    $chain = new BackendChain();
    // We need to create some various backends in the chain.
    $chain->appendBackend(new MemoryBackend())
      ->prependBackend(new MemoryBackend())
      ->appendBackend(new MemoryBackend());
    \Drupal::service('cache_tags.invalidator')->addInvalidator($chain);
    return $chain;
  }

}