diff -r 000000000000 -r 6474c204b198 testing/mochitest/tests/browser/browser_sanityException.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing/mochitest/tests/browser/browser_sanityException.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+function test() {
+  ok(true, "ok called");
+  expectUncaughtException();
+  throw "this is a deliberately thrown exception";
+}