--- a/tests/test_util_queue.lua	Wed Jul 20 18:07:10 2016 +0200
+++ b/tests/test_util_queue.lua	Thu Jul 21 01:23:32 2016 +0800
@@ -46,6 +46,8 @@
 			assert_equal(q:pop(), i);
 			assert_is(q:push(i+1));
 		end
+		assert_equal(q:pop(), 1001);
+		assert_equal(q:count(), 0);
 	end
 
 	do