diff -r 000000000000 -r 6474c204b198 netwerk/test/unit/test_cache2-14-concurent-readers.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/test/unit/test_cache2-14-concurent-readers.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,31 @@
+function run_test()
+{
+  do_get_profile();
+
+  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
+    new OpenCallback(NEW, "x1m", "x1d", function(entry) {
+      // nothing to do here, we expect concurent callbacks to get
+      // all notified, then the test finishes
+    })
+  );
+
+  var mc = new MultipleCallbacks(3, finish_cache2_test);
+
+  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
+    new OpenCallback(NORMAL, "x1m", "x1d", function(entry) {
+      mc.fired();
+    })
+  );
+  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
+    new OpenCallback(NORMAL, "x1m", "x1d", function(entry) {
+      mc.fired();
+    })
+  );
+  asyncOpenCacheEntry("http://x/", "disk", Ci.nsICacheStorage.OPEN_NORMALLY, null,
+    new OpenCallback(NORMAL, "x1m", "x1d", function(entry) {
+      mc.fired();
+    })
+  );
+
+  do_test_pending();
+}