diff -r 000000000000 -r 6474c204b198 testing/mozbase/mozrunner/tests/test_states.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing/mozbase/mozrunner/tests/test_states.py	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,22 @@
+#!/usr/bin/env python
+
+import os
+from time import sleep
+import unittest
+
+import mozrunner
+
+import mozrunnertest
+
+
+class MozrunnerStatesTestCase(mozrunnertest.MozrunnerTestCase):
+
+    def test_errors_before_start(self):
+        """Bug 965714: Not started errors before start() is called"""
+
+        def test_returncode():
+            return self.runner.returncode
+
+        self.assertRaises(mozrunner.RunnerNotStartedError, self.runner.is_running)
+        self.assertRaises(mozrunner.RunnerNotStartedError, test_returncode)
+        self.assertRaises(mozrunner.RunnerNotStartedError, self.runner.wait)