protected function BackendChainTest::createCacheBackend in Drupal 8

Same name and namespace in other branches

1. 9 core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php \Drupal\KernelTests\Core\Cache\BackendChainTest::createCacheBackend()

Creates a cache backend to test.

Override this method to test a CacheBackend.

Parameters

string $bin: Bin name to use for this backend instance.

Return value

\Drupal\Core\Cache\CacheBackendInterface Cache backend to test.

Overrides GenericCacheBackendUnitTestBase::createCacheBackend

File

core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php, line 15

Class

BackendChainTest

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

Namespace

Drupal\KernelTests\Core\Cache

Code

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;
}