Adding upstream version 115.7.0esr.upstream/115.7.0esr

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 27 insertions, 0 deletions

diff --git a/js/xpconnect/tests/browser/browser_freeze_builtins.js b/js/xpconnect/tests/browser/browser_freeze_builtins.js
new file mode 100644
index 0000000000..905224094e
--- /dev/null
+++ b/js/xpconnect/tests/browser/browser_freeze_builtins.js
@@ -0,0 +1,27 @@
+/* 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/.
+ */
+
+function checkCtor(global, name, description) {
+  ok(Object.isFrozen(global[name]), `${description} ${name} is frozen`);
+  ok(
+    Object.isSealed(global[name].prototype),
+    `${description} ${name}.prototype is sealed`
+  );
+
+  let descr = Object.getOwnPropertyDescriptor(global, name);
+  ok(!descr.configurable, `${description} ${name} should be non-configurable`);
+  ok(!descr.writable, `${description} ${name} should not be writable`);
+}
+
+function checkGlobal(global, description) {
+  checkCtor(global, "Object", description);
+  checkCtor(global, "Array", description);
+  checkCtor(global, "Function", description);
+}
+
+add_task(async function () {
+  let systemGlobal = Cu.getGlobalForObject(Services);
+  checkGlobal(systemGlobal, "system global");
+});