Refactoring DBA-mocking tests

- Reducing DB-dependencies
- Creating DB-cache mocks
- Creating DB-lock mocks
- Switching to mocked dependencies for Cache/Lock/App

tests/src/Core/Cache/MemcachedCacheDriverTest.php

@@ -3,19 +3,19 @@
 
 namespace Friendica\Test\src\Core\Cache;
 
-/**
- * @runTestsInSeparateProcesses
- * @preserveGlobalState disabled
- */
 use Friendica\Core\Cache\CacheDriverFactory;
 
 /**
+ * @runTestsInSeparateProcesses
+ * @preserveGlobalState disabled
  * @requires extension memcached
  */
 class MemcachedCacheDriverTest extends MemoryCacheTest
 {
 	protected function getInstance()
 	{
+		$this->mockConfigGet('system', 'memcached_hosts', [0 => 'localhost, 11211']);
+
 		$this->cache = CacheDriverFactory::create('memcached');
 		return $this->cache;
 	}