--- jsr166/src/test/tck/PriorityBlockingQueueTest.java	2013/05/30 03:28:55	1.52
+++ jsr166/src/test/tck/PriorityBlockingQueueTest.java	2014/11/23 22:27:06	1.53
@@ -716,4 +716,19 @@ public class PriorityBlockingQueueTest e
         }
     }
 
+    /**
+     * remove(null), contains(null) always return false
+     */
+    public void testNeverContainsNull() {
+        Collection<?>[] qs = {
+            new PriorityBlockingQueue<Object>(),
+            populatedQueue(2),
+        };
+
+        for (Collection<?> q : qs) {
+            assertFalse(q.contains(null));
+            assertFalse(q.remove(null));
+        }
+    }
+
 }