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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/array-length-protochange.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/array-length-protochange.js')
-rw-r--r-- | js/src/tests/non262/extensions/array-length-protochange.js | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/tests/non262/extensions/array-length-protochange.js b/js/src/tests/non262/extensions/array-length-protochange.js new file mode 100644 index 0000000000..aeec8e9a22 --- /dev/null +++ b/js/src/tests/non262/extensions/array-length-protochange.js @@ -0,0 +1,35 @@ +// Any copyright is dedicated to the Public Domain. +// http://creativecommons.org/licenses/publicdomain/ + +//----------------------------------------------------------------------------- +var BUGNUMBER = 548671; +var summary = + "Don't use a shared-permanent inherited property to implement " + + "[].length or (function(){}).length"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +var a = [1, 2, 3]; +a.__proto__ = null; +reportCompare("length" in a, true, "length should be own property of array"); +reportCompare(Object.hasOwnProperty.call(a, "length"), true, + "length should be own property of array"); +reportCompare(a.length, 3, "array length should be 3"); + +var a = [], b = []; +b.__proto__ = a; +reportCompare(b.hasOwnProperty("length"), true, + "length should be own property of array"); +b.length = 42; +reportCompare(b.length, 42, "should have mutated b's (own) length"); +reportCompare(a.length, 0, "should not have mutated a's (own) length"); + + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("All tests passed!"); |