1 files changed, 14 insertions, 0 deletions
diff --git a/modules/libpref/test/unit_ipc/test_initial_prefs.js b/modules/libpref/test/unit_ipc/test_initial_prefs.js
new file mode 100644
index 0000000000..9c5e8991cf
--- /dev/null
+++ b/modules/libpref/test/unit_ipc/test_initial_prefs.js
@@ -0,0 +1,14 @@
+function isParentProcess() {
+  return Services.appinfo.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT;
+}
+
+function run_test() {
+  if (!isParentProcess()) {
+    const pb = Services.prefs;
+    pb.setBoolPref("Test.IPC.bool", true);
+    pb.setIntPref("Test.IPC.int", 23);
+    pb.setCharPref("Test.IPC.char", "hey");
+
+    run_test_in_child("test_existing_prefs.js");
+  }
+}