Issue #2113169 by damiankloip, Xano, sun, catch: Memory backend defined as a...

Issue #2113169 by damiankloip, Xano, sun, catch: Memory backend defined as a service in core.services.yml.

core/core.services.yml

@@ -7,8 +7,6 @@ services:
   cache.backend.database:
     class: Drupal\Core\Cache\DatabaseBackendFactory
     arguments: ['@database']
-  cache.backend.memory:
-    class: Drupal\Core\Cache\MemoryBackendFactory
   cache.bootstrap:
     class: Drupal\Core\Cache\CacheBackendInterface
     tags:

core/modules/simpletest/lib/Drupal/simpletest/DrupalUnitTestBase.php

@@ -222,7 +222,7 @@ public function containerBuild(ContainerBuilder $container) {
     $this->container->setParameter('language.default_values', Language::$defaultValues);
 
     $container->register('lock', 'Drupal\Core\Lock\NullLockBackend');
-    $this->settingsSet('cache', array('default' => 'cache.backend.memory'));
+    $container->register('cache_factory', 'Drupal\Core\Cache\MemoryBackendFactory');
 
     $container
       ->register('config.storage', 'Drupal\Core\Config\FileStorage')

core/modules/system/lib/Drupal/system/Tests/DrupalKernel/DrupalKernelTest.php

@@ -39,8 +39,6 @@ function setUp() {
       'directory' => DRUPAL_ROOT . '/' . $this->public_files_directory . '/php',
       'secret' => drupal_get_hash_salt(),
     )));
-    // Use a non-persistent cache to avoid queries to non-existing tables.
-    $this->settingsSet('cache', array('default' => 'cache.backend.memory'));
   }
 
   /**