From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- js/xpconnect/tests/unit/test_js_weak_references.js | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 js/xpconnect/tests/unit/test_js_weak_references.js (limited to 'js/xpconnect/tests/unit/test_js_weak_references.js') diff --git a/js/xpconnect/tests/unit/test_js_weak_references.js b/js/xpconnect/tests/unit/test_js_weak_references.js new file mode 100644 index 0000000000..2603f24ee2 --- /dev/null +++ b/js/xpconnect/tests/unit/test_js_weak_references.js @@ -0,0 +1,45 @@ +/* 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/. */ + +/* See https://bugzilla.mozilla.org/show_bug.cgi?id=317304 */ + +function run_test() +{ + // Bug 712649: Calling getWeakReference(null) should work. + try { + var nullWeak = Cu.getWeakReference(null); + Assert.ok(nullWeak.get() === null); + } catch (e) { + Assert.ok(false); + } + + var obj = { num: 5, str: 'foo' }; + var weak = Cu.getWeakReference(obj); + + Assert.ok(weak.get() === obj); + Assert.ok(weak.get().num == 5); + Assert.ok(weak.get().str == 'foo'); + + // Force garbage collection + Cu.forceGC(); + + // obj still references the object, so it should still be accessible via weak + Assert.ok(weak.get() === obj); + Assert.ok(weak.get().num == 5); + Assert.ok(weak.get().str == 'foo'); + + // Clear obj's reference to the object and force garbage collection. To make + // sure that there are no instances of obj stored in the registers or on the + // native stack and the conservative GC would not find it we force the same + // code paths that we used for the initial allocation. + obj = { num: 6, str: 'foo2' }; + var weak2 = Cu.getWeakReference(obj); + Assert.ok(weak2.get() === obj); + + Cu.forceGC(); + + // The object should have been garbage collected and so should no longer be + // accessible via weak + Assert.ok(weak.get() === null); +} -- cgit v1.2.3