1 files changed, 37 insertions, 0 deletions
diff --git a/dom/workers/test/marionette/test_service_workers_disabled.py b/dom/workers/test/marionette/test_service_workers_disabled.py
new file mode 100644
index 0000000000..deed164242
--- /dev/null
+++ b/dom/workers/test/marionette/test_service_workers_disabled.py
@@ -0,0 +1,37 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+import sys
+
+# Add this directory to the import path.
+sys.path.append(os.path.dirname(__file__))
+
+from service_worker_utils import MarionetteServiceWorkerTestCase
+
+
+class ServiceWorkersDisabledTestCase(MarionetteServiceWorkerTestCase):
+    def setUp(self):
+        super(ServiceWorkersDisabledTestCase, self).setUp()
+        self.install_service_worker("serviceworker/install_serviceworker.html")
+
+    def tearDown(self):
+        self.marionette.restart(in_app=False, clean=True)
+        super(ServiceWorkersDisabledTestCase, self).tearDown()
+
+    def test_service_workers_disabled_at_startup(self):
+        # self.marionette.set_pref sets preferences after startup.  Using it
+        # here causes intermittent failures.
+        self.marionette.instance.profile.set_preferences(
+            {
+                "dom.serviceWorkers.enabled": False,
+            }
+        )
+
+        self.marionette.restart()
+
+        self.assertFalse(
+            self.is_service_worker_registered,
+            "Service worker registration should have been purged",
+        )