class BackendChainTest

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

@group Cache

Hierarchy

• class \Drupal\KernelTests\KernelTestBase extends \PHPUnit\Framework\TestCase implements \Drupal\Core\DependencyInjection\ServiceProviderInterface uses \Drupal\KernelTests\AssertContentTrait, \Drupal\Tests\RandomGeneratorTrait, \Drupal\Tests\ConfigTestTrait, \Drupal\Tests\ExtensionListTestTrait, \Drupal\Tests\TestRequirementsTrait, \Drupal\Tests\PhpUnitCompatibilityTrait, \Prophecy\PhpUnit\ProphecyTrait, \Drupal\TestTools\Extension\DeprecationBridge\ExpectDeprecationTrait
  • class \Drupal\KernelTests\Core\Cache\GenericCacheBackendUnitTestBase extends \Drupal\KernelTests\KernelTestBase
    • class \Drupal\KernelTests\Core\Cache\BackendChainTest extends \Drupal\KernelTests\Core\Cache\GenericCacheBackendUnitTestBase

Expanded class hierarchy of BackendChainTest

File

core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php, line 16

Namespace

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

}

Members