Rename *CacheDriver to *Cache because they don't act as driver anymore

tests/src/Core/Cache/APCuCacheTest.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Friendica\Test\src\Core\Cache;
+
+use Friendica\Core\Cache\APCuCache;
+
+class APCuCacheTest extends MemoryCacheTest
+{
+	protected function setUp()
+	{
+		if (!APCuCache::isAvailable()) {
+			$this->markTestSkipped('APCu is not available');
+		}
+
+		parent::setUp();
+	}
+
+	protected function getInstance()
+	{
+		$this->cache = new APCuCache('localhost');
+		return $this->cache;
+	}
+
+	public function tearDown()
+	{
+		$this->cache->clear(false);
+		parent::tearDown();
+	}
+}