1 files changed, 3 insertions, 13 deletions
diff --git a/tests/lib/cache.php b/tests/lib/cache.php
index 9ada0accc21..08653d4a310 100644
--- a/tests/lib/cache.php
+++ b/tests/lib/cache.php
@@ -13,7 +13,9 @@ abstract class Test_Cache extends UnitTestCase {
 	protected $instance;
 
 	public function tearDown() {
-		$this->instance->clear();
+		if($this->instance){
+			$this->instance->clear();
+		}
 	}
 
 	function testSimple() {
@@ -64,16 +66,4 @@ abstract class Test_Cache extends UnitTestCase {
 		$this->assertFalse($this->instance->hasKey('2_value1'));
 		$this->assertFalse($this->instance->hasKey('3_value1'));
 	}
-
-	function testTTL() {
-		$value='foobar';
-		$this->instance->set('value1',$value,1);
-		$value2='foobar';
-		$this->instance->set('value2',$value2);
-		sleep(2);
-		$this->assertFalse($this->instance->hasKey('value1'));
-		$this->assertNull($this->instance->get('value1'));
-		$this->assertTrue($this->instance->hasKey('value2'));
-		$this->assertEqual($value2,$this->instance->get('value2'));
-	}
 }