diff --git a/test/helpers.js b/test/helpers.js
index 7925751..292c041 100644
--- a/test/helpers.js
+++ b/test/helpers.js
@@ -32,6 +32,15 @@ module.exports.testLevels = function (transport, assertMsg, assertFn) {
   primmetadatatest[assertMsg] = assertFn;
   tests['when passed primitive metadata'] = primmetadatatest;
 
+  var nummetadatatest = {
+    topic: function () {
+      transport.log('info', 'test message', 123456789, this.callback.bind(this, null));
+    }
+  };
+
+  nummetadatatest[assertMsg] = assertFn;
+  tests['when passed numeric metadata'] = nummetadatatest;
+
 // circular references aren't supportded by regular JSON, and it's not supported
 // by node-loggly-bulk. I'm omitting it for now. If it wants to be fixed, then
 // node-loggly-bulk needs an update.