diff -r 000000000000 -r 6474c204b198 netwerk/test/unit/test_cache2-06-pb-mode.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/test/unit/test_cache2-06-pb-mode.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,41 @@
+function exitPB()
+{
+  var obsvc = Cc["@mozilla.org/observer-service;1"].
+    getService(Ci.nsIObserverService);
+  obsvc.notifyObservers(null, "last-pb-context-exited", null);
+}
+
+function run_test()
+{
+  do_get_profile();
+
+  // Store PB entry
+  asyncOpenCacheEntry("http://p1/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, LoadContextInfo.private,
+    new OpenCallback(NEW, "p1m", "p1d", function(entry) {
+      asyncOpenCacheEntry("http://p1/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, LoadContextInfo.private,
+        new OpenCallback(NORMAL, "p1m", "p1d", function(entry) {
+          // Check it's there
+          syncWithCacheIOThread(function() {
+            var storage = getCacheStorage("disk", LoadContextInfo.private);
+            storage.asyncVisitStorage(
+              new VisitCallback(1, 12, ["http://p1/"], function() {
+                // Simulate PB exit
+                exitPB();
+                // Check the entry is gone
+                storage.asyncVisitStorage(
+                  new VisitCallback(0, 0, [], function() {
+                    finish_cache2_test();
+                  }),
+                  true
+                );
+              }),
+              true
+            );
+          });
+        })
+      );
+    })
+  );
+
+  do_test_pending();
+}