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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /js/src/tests/non262/Array/concat-proxy.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | js/src/tests/non262/Array/concat-proxy.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/concat-proxy.js b/js/src/tests/non262/Array/concat-proxy.js new file mode 100644 index 0000000000..ab733e2f10 --- /dev/null +++ b/js/src/tests/non262/Array/concat-proxy.js @@ -0,0 +1,25 @@ +var BUGNUMBER = 1287520; +var summary = 'Array.prototype.concat should check HasProperty everytime for non-dense array'; + +print(BUGNUMBER + ": " + summary); + +var a = [1, 2, 3]; +a.constructor = { + [Symbol.species]: function(...args) { + var p = new Proxy(new Array(...args), { + defineProperty(target, propertyKey, receiver) { + if (propertyKey === "0") delete a[1]; + return Reflect.defineProperty(target, propertyKey, receiver); + } + }); + return p; + } +}; + +var p = a.concat(); +assertEq(0 in p, true); +assertEq(1 in p, false); +assertEq(2 in p, true); + +if (typeof reportCompare === "function") + reportCompare(true, true); |