diff -r 000000000000 -r 6474c204b198 mobile/android/tests/background/junit3/src/sync/helpers/ExpectBeginFailDelegate.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mobile/android/tests/background/junit3/src/sync/helpers/ExpectBeginFailDelegate.java	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+package org.mozilla.gecko.background.sync.helpers;
+
+import org.mozilla.gecko.sync.repositories.InvalidSessionTransitionException;
+
+public class ExpectBeginFailDelegate extends DefaultBeginDelegate {
+
+  @Override
+  public void onBeginFailed(Exception ex) {
+    if (!(ex instanceof InvalidSessionTransitionException)) {
+      performNotify("Expected InvalidSessionTransititionException but got ", ex);
+    }
+  }
+}