Version 1

[yaffs-website] / web / core / tests / Drupal / KernelTests / Core / Cache / BackendChainTest.php

diff --git a/web/core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php b/web/core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php
new file mode 100644 (file)
index 0000000..72c0de9
--- /dev/null
+++ b/web/core/tests/Drupal/KernelTests/Core/Cache/BackendChainTest.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace Drupal\KernelTests\Core\Cache;
+
+use Drupal\Core\Cache\BackendChain;
+use Drupal\Core\Cache\MemoryBackend;
+
+/**
+ * Unit test of the backend chain using the generic cache unit test base.
+ *
+ * @group Cache
+ */
+class BackendChainTest extends GenericCacheBackendUnitTestBase {
+
+  protected function createCacheBackend($bin) {
+    $chain = new BackendChain($bin);
+
+    // 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;
+  }
+
+}