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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/xpconnect/tests/mochitest/test_weakRefs.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/xpconnect/tests/mochitest/test_weakRefs.html')
| -rw-r--r-- | js/xpconnect/tests/mochitest/test_weakRefs.html | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/js/xpconnect/tests/mochitest/test_weakRefs.html b/js/xpconnect/tests/mochitest/test_weakRefs.html new file mode 100644 index 0000000000..331bb9bb69 --- /dev/null +++ b/js/xpconnect/tests/mochitest/test_weakRefs.html @@ -0,0 +1,80 @@ +<!DOCTYPE HTML> +<html> + <head> + <meta charset="utf-8"> + <title>Test WeakRef works in the browser</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script type="application/javascript"> + let wr1, wr2, wr3, wr4; + + function go() { + SimpleTest.waitForExplicitFinish(); + + // 1. WeakRef with JS target. + wr1 = new WeakRef({}); + + // 2. WeakRef with DOM object target (without preserved wrapper). + wr2 = new WeakRef(document.createElement("div")); + + // 3. WeakRef with DOM object target (with preserved wrapper). + let object = document.createElement("div"); + object.someProperty = true; + wr3 = new WeakRef(object); + object = null + + // 4. WeakRef with reachable DOM object target without preserved wrapper. + document.body.appendChild(document.createElement("div")); + wr4 = new WeakRef(document.body.lastChild); + + // WeakRef should keep the target in the current task. + isnot(wr1.deref(), undefined, "deref() should return its target."); + isnot(wr2.deref(), undefined, "deref() should return its target."); + isnot(wr3.deref(), undefined, "deref() should return its target."); + isnot(wr4.deref(), undefined, "deref() should return its target."); + + // WeakRef should keep the target until the end of current task, which + // includes promise microtasks. + Promise.resolve().then(() => { + isnot(wr1.deref(), undefined, "deref() should return its target."); + isnot(wr2.deref(), undefined, "deref() should return its target."); + isnot(wr3.deref(), undefined, "deref() should return its target."); + isnot(wr4.deref(), undefined, "deref() should return its target."); + }); + + // setTimeout will call its callback in a new task. + setTimeout(task2, 0); + } + + function task2() { + // Trigger a full GC/CC/GC cycle to collect WeakRef targets. + SpecialPowers.DOMWindowUtils.garbageCollect(); + SpecialPowers.DOMWindowUtils.cycleCollect(); + SpecialPowers.DOMWindowUtils.garbageCollect(); + + is(wr1.deref(), undefined, "deref() should return undefined."); + is(wr2.deref(), undefined, "deref() should return undefined."); + is(wr3.deref(), undefined, "deref() should return undefined."); + isnot(wr4.deref(), undefined, "deref() should return its target."); + + // setTimeout will call its callback in a new task. + setTimeout(task3, 0); + } + + function task3() { + document.body.removeChild(document.body.lastChild); + + SpecialPowers.DOMWindowUtils.garbageCollect(); + SpecialPowers.DOMWindowUtils.cycleCollect(); + SpecialPowers.DOMWindowUtils.garbageCollect(); + + is(wr1.deref(), undefined, "deref() should return undefined."); + is(wr2.deref(), undefined, "deref() should return undefined."); + is(wr3.deref(), undefined, "deref() should return undefined."); + is(wr4.deref(), undefined, "deref() should return undefined."); + + SimpleTest.finish(); + } + </script> + </head> + <body onload="go()"></body> +</html> |