1 files changed, 54 insertions, 0 deletions
diff --git a/testing/marionette/harness/marionette_harness/tests/unit/test_prefs_enforce.py b/testing/marionette/harness/marionette_harness/tests/unit/test_prefs_enforce.py
new file mode 100644
index 0000000000..609bed0527
--- /dev/null
+++ b/testing/marionette/harness/marionette_harness/tests/unit/test_prefs_enforce.py
@@ -0,0 +1,54 @@
+# 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 six
+
+from marionette_harness import MarionetteTestCase
+
+
+class TestEnforcePreferences(MarionetteTestCase):
+    def setUp(self):
+        super(TestEnforcePreferences, self).setUp()
+        self.marionette.set_context("chrome")
+
+    def tearDown(self):
+        self.marionette.restart(in_app=False, clean=True)
+
+        super(TestEnforcePreferences, self).tearDown()
+
+    def enforce_prefs(self, prefs=None):
+        test_prefs = {
+            "marionette.test.bool": True,
+            "marionette.test.int": 3,
+            "marionette.test.string": "testing",
+        }
+
+        self.marionette.enforce_gecko_prefs(prefs or test_prefs)
+
+    def test_preferences_are_set(self):
+        self.enforce_prefs()
+        self.assertTrue(self.marionette.get_pref("marionette.test.bool"))
+        self.assertEqual(self.marionette.get_pref("marionette.test.string"), "testing")
+        self.assertEqual(self.marionette.get_pref("marionette.test.int"), 3)
+
+    def test_change_enforced_preference(self):
+        self.enforce_prefs()
+        self.assertTrue(self.marionette.get_pref("marionette.test.bool"))
+
+        self.enforce_prefs({"marionette.test.bool": False})
+        self.assertFalse(self.marionette.get_pref("marionette.test.bool"))
+
+    def test_restart_with_clean_profile_after_enforce_prefs(self):
+        self.enforce_prefs()
+        self.assertTrue(self.marionette.get_pref("marionette.test.bool"))
+
+        self.marionette.restart(in_app=False, clean=True)
+        self.assertEqual(self.marionette.get_pref("marionette.test.bool"), None)
+
+    def test_restart_preserves_requested_capabilities(self):
+        self.marionette.delete_session()
+        self.marionette.start_session(capabilities={"test:fooBar": True})
+
+        self.enforce_prefs()
+        self.assertEqual(self.marionette.session.get("test:fooBar"), True)