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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/object/defineProperty-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/object/defineProperty-proxy.js | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/non262/object/defineProperty-proxy.js b/js/src/tests/non262/object/defineProperty-proxy.js new file mode 100644 index 0000000000..b5ece940bc --- /dev/null +++ b/js/src/tests/non262/object/defineProperty-proxy.js @@ -0,0 +1,54 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ */ + +// Test details of the implementation of ToPropertyDescriptor exposed to scripts +// thanks to scriptable proxies. + +// A LoggingProxy object logs certain operations performed on it. +var log = []; +function LoggingProxy(target) { + return new Proxy(target, { + has: function (t, id) { + log.push("has " + id); + return id in t; + }, + get: function (t, id) { + log.push("get " + id); + return t[id]; + } + }); +} + +// Tragically, we use separate code to implement Object.defineProperty on +// arrays and on proxies. So run the test three times. +var testSubjects = [ + {}, + [], + new Proxy({}, {}) +]; + +for (var obj of testSubjects) { + log = []; + + // Object.defineProperty is one public method that performs a + // ToPropertyDescriptor call. + Object.defineProperty(obj, "x", new LoggingProxy({ + enumerable: true, + configurable: true, + value: 3, + writable: true + })); + + // It should have performed exactly these operations on the proxy, in this + // order. See ES6 rev 24 (2014 April 27) 6.2.4.5 ToPropertyDescriptor. + assertDeepEq(log, [ + "has enumerable", "get enumerable", + "has configurable", "get configurable", + "has value", "get value", + "has writable", "get writable", + "has get", + "has set" + ]); +} + +reportCompare(0, 0); |