1 files changed, 13 insertions, 0 deletions
diff --git a/toolkit/mozapps/webextensions/test/browser/browser_system_addons_are_e10s.js b/toolkit/mozapps/webextensions/test/browser/browser_system_addons_are_e10s.js
new file mode 100644
index 000000000..37ab76542
--- /dev/null
+++ b/toolkit/mozapps/webextensions/test/browser/browser_system_addons_are_e10s.js
@@ -0,0 +1,13 @@
+"use strict";
+
+add_task(function* test_enabled() {
+  let addons = yield new Promise(resolved => AddonManager.getAllAddons(resolved));
+  for (let addon of addons) {
+    if (addon.isSystem) {
+      ok(addon.multiprocessCompatible,
+         `System addon ${addon.id} is not marked as multiprocess compatible`);
+      ok(!addon.unpack,
+         `System add-on ${addon.id} isn't a packed add-on.`);
+    }
+  }
+});