graceful teardown of cache

diff --git a/tests/lib/files/cache/cache.php b/tests/lib/files/cache/cache.php
index f272655925b6633fdf7a4226f9f70140e8001c63..527c1d1b2a13c84092ab68175393dedb7b5f4698 100644 (file)
--- a/tests/lib/files/cache/cache.php
+++ b/tests/lib/files/cache/cache.php
@@ -348,7 +348,9 @@ class Cache extends \PHPUnit_Framework_TestCase {
        }
 
        public function tearDown() {
-               $this->cache->clear();
+               if ($this->cache) {
+                       $this->cache->clear();
+               }
        }
 
        public function setUp() {