From 9243d31452727befb47f564384ab891cd3660c49 Mon Sep 17 00:00:00 2001
From: Devon Carew <devoncarew@gmail.com>
Date: Thu, 18 Dec 2014 13:20:20 -0800
Subject: [PATCH] cover a branch

---
 test/usage_impl_test.dart | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/test/usage_impl_test.dart b/test/usage_impl_test.dart
index c71cccd..80b8690 100644
--- a/test/usage_impl_test.dart
+++ b/test/usage_impl_test.dart
@@ -48,6 +48,9 @@ void defineTests() {
       mock.setSessionValue('val', 'ue');
       mock.sendScreenView('bar');
       has(mock.last, 'val');
+      mock.setSessionValue('val', null);
+      mock.sendScreenView('baz');
+      hasnt(mock.last, 'val');
     });
   });