diff --git a/Psr/Log/Test/LoggerInterfaceTest.php b/Psr/Log/Test/LoggerInterfaceTest.php
index a0391a5..4b861c3 100644
--- a/Psr/Log/Test/LoggerInterfaceTest.php
+++ b/Psr/Log/Test/LoggerInterfaceTest.php
@@ -101,6 +101,9 @@ public function testObjectCastToString()
 
     public function testContextCanContainAnything()
     {
+        $closed = fopen('php://memory', 'r');
+        fclose($closed);
+
         $context = array(
             'bool' => true,
             'null' => null,
@@ -110,6 +113,7 @@ public function testContextCanContainAnything()
             'nested' => array('with object' => new DummyTest),
             'object' => new \DateTime,
             'resource' => fopen('php://memory', 'r'),
+            'closed' => $closed,
         );
 
         $this->getLogger()->warning('Crazy context data', $context);