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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/Symbol/enumeration.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/Symbol/enumeration.js | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/js/src/tests/non262/Symbol/enumeration.js b/js/src/tests/non262/Symbol/enumeration.js new file mode 100644 index 0000000000..de993d69a7 --- /dev/null +++ b/js/src/tests/non262/Symbol/enumeration.js @@ -0,0 +1,52 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +// for-in loops skip properties with symbol keys, even enumerable properties. +var obj = {}; +obj[Symbol.for("moon")] = "sun"; +obj[Symbol("asleep")] = "awake"; +obj[Symbol.iterator] = "List"; +for (var x in obj) + throw "FAIL: " + String(x); + +// This includes inherited properties. +var obj2 = Object.create(obj); +for (var x in obj2) + throw "FAIL: " + String(x); + +// The same goes for proxies. +var p = new Proxy(obj, {}); +for (var x in p) + throw "FAIL: " + String(x); +var p2 = new Proxy(obj2, {}); +for (var x in p2) + throw "FAIL: " + String(x); + +// Object.keys() and .getOwnPropertyNames() also skip symbols. +assertEq(Object.keys(obj).length, 0); +assertEq(Object.keys(p).length, 0); +assertEq(Object.keys(obj2).length, 0); +assertEq(Object.keys(p2).length, 0); +assertEq(Object.getOwnPropertyNames(obj).length, 0); +assertEq(Object.getOwnPropertyNames(p).length, 0); +assertEq(Object.getOwnPropertyNames(obj2).length, 0); +assertEq(Object.getOwnPropertyNames(p2).length, 0); + +// Test interaction of Object.keys(), proxies, and symbol property keys. +var log = []; +var h = { + ownKeys: (t) => { + log.push("ownKeys"); + return ["a", "0", Symbol.for("moon"), Symbol("asleep"), Symbol.iterator]; + }, + getOwnPropertyDescriptor: (t, key) => { + log.push("gopd", key); + return {configurable: true, enumerable: true, value: 0, writable: true}; + } +}; +p = new Proxy({}, h); +assertDeepEq(Object.keys(p), ["a", "0"]); +assertDeepEq(log, ["ownKeys", "gopd", "a", "gopd", "0"]); + +if (typeof reportCompare === "function") + reportCompare(0, 0); |