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/Symbol/for-in-order.js | 33 ++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 js/src/tests/non262/Symbol/for-in-order.js (limited to 'js/src/tests/non262/Symbol/for-in-order.js') diff --git a/js/src/tests/non262/Symbol/for-in-order.js b/js/src/tests/non262/Symbol/for-in-order.js new file mode 100644 index 0000000000..7d1f234305 --- /dev/null +++ b/js/src/tests/non262/Symbol/for-in-order.js @@ -0,0 +1,33 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +// ES6 does not specify enumeration order, but implementations mostly retain +// property insertion order -- and must, for web compatibility. This test checks +// that symbol-keyed properties do not interfere with that order. + +var obj = {}; +obj[Symbol("moon")] = 0; +obj.x = 1; +obj[Symbol.for("y")] = 2 +obj.y = 3; +obj[Symbol.iterator] = function* () { yield 4; }; +obj.z = 5; +Object.prototype[Symbol.for("comet")] = 6; + +var keys = []; +for (var k in obj) + keys.push(k); +assertDeepEq(keys, ["x", "y", "z"]); +assertDeepEq(Object.keys(obj), ["x", "y", "z"]); + +// Test with more properties. +for (var i = 0; i < 1000; i++) + obj[Symbol(i)] = i; +obj.w = 1000; +keys = [] +for (var k in obj) + keys.push(k); +assertDeepEq(keys, ["x", "y", "z", "w"]); + +if (typeof reportCompare === "function") + reportCompare(0, 0); -- cgit v1.2.3