From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- js/src/tests/non262/Array/concat-proxy.js | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) create mode 100644 js/src/tests/non262/Array/concat-proxy.js (limited to 'js/src/tests/non262/Array/concat-proxy.js') 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); -- cgit v1.2.3