diff -r 000000000000 -r 6474c204b198 testing/mochitest/tests/browser/browser_sanityException2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing/mochitest/tests/browser/browser_sanityException2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function test() {
+  waitForExplicitFinish();
+  ok(true, "ok called");
+  executeSoon(function() {
+    expectUncaughtException();
+    throw "this is a deliberately thrown exception";
+  });
+  executeSoon(function() {
+    finish();
+  });
+}