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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/tests/non262/extensions/proxy-array-target-length-definition.js | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/tests/non262/extensions/proxy-array-target-length-definition.js')
-rw-r--r-- | js/src/tests/non262/extensions/proxy-array-target-length-definition.js | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/proxy-array-target-length-definition.js b/js/src/tests/non262/extensions/proxy-array-target-length-definition.js new file mode 100644 index 0000000000..c573c4ba08 --- /dev/null +++ b/js/src/tests/non262/extensions/proxy-array-target-length-definition.js @@ -0,0 +1,55 @@ +/* + * Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ + */ + +var gTestfile = 'proxy-array-target-length-definition.js'; +var BUGNUMBER = 905947; +var summary = + "Redefining an array's |length| property when redefining the |length| " + + "property on a proxy with an array as target"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +var arr = []; +var p = new Proxy(arr, {}); + +function assertThrowsTypeError(f) +{ + try { + f(); + assertEq(false, true, "Must have thrown"); + } catch (e) { + assertEq(e instanceof TypeError, true, "Must have thrown TypeError"); + } +} + +// Redefining non-configurable length should throw a TypeError +assertThrowsTypeError(function () { Object.defineProperty(p, "length", { value: 17, configurable: true }); }); + +// Same here. +assertThrowsTypeError(function () { Object.defineProperty(p, "length", { value: 42, enumerable: true }); }); + +// Check the property went unchanged. +var pd = Object.getOwnPropertyDescriptor(p, "length"); +assertEq(pd.value, 0); +assertEq(pd.writable, true); +assertEq(pd.enumerable, false); +assertEq(pd.configurable, false); + +var ad = Object.getOwnPropertyDescriptor(arr, "length"); +assertEq(ad.value, 0); +assertEq(ad.writable, true); +assertEq(ad.enumerable, false); +assertEq(ad.configurable, false); + +/******************************************************************************/ + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("Tests complete"); |