Fix namespace of tests/cache/

tests/lib/cache/cappedmemorycache.php

@@ -29,7 +29,7 @@ namespace Test\Cache;
  *
  * @package Test\Cache
  */
-class CappedMemoryCache extends \Test_Cache {
+class CappedMemoryCache extends TestCache {
 	public function setUp() {
 		parent::setUp();
 		$this->instance = new \OC\Cache\CappedMemoryCache();

tests/lib/cache/filecache.php

@@ -29,7 +29,7 @@ namespace Test\Cache;
  *
  * @package Test\Cache
  */
-class FileCache extends \Test_Cache {
+class FileCache extends TestCache {
 	/**
 	 * @var string
 	 * */

tests/lib/cache/testcache.php

@@ -6,7 +6,9 @@
  * See the COPYING-README file.
  */
 
-abstract class Test_Cache extends \Test\TestCase {
+namespace Test\Cache;
+
+abstract class TestCache extends \Test\TestCase {
 	/**
 	 * @var \OCP\ICache cache;
 	 */

tests/lib/memcache/cache.php

@@ -9,7 +9,7 @@
 
 namespace Test\Memcache;
 
-abstract class Cache extends \Test_Cache {
+abstract class Cache extends \Test\Cache\TestCache {
 	/**
 	 * @var \OCP\IMemcache cache;
 	 */