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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/Array/length-truncate-nonconfigurable.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/Array/length-truncate-nonconfigurable.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/length-truncate-nonconfigurable.js b/js/src/tests/non262/Array/length-truncate-nonconfigurable.js new file mode 100644 index 0000000000..e9a66fe0ac --- /dev/null +++ b/js/src/tests/non262/Array/length-truncate-nonconfigurable.js @@ -0,0 +1,48 @@ +/* + * Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ + * Contributor: + * Jeff Walden <jwalden+code@mit.edu> + */ + +//----------------------------------------------------------------------------- +var BUGNUMBER = 858381; +var summary = + "Array length redefinition behavior with non-configurable elements"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +var arr = [0, 1, 2]; +Object.defineProperty(arr, 1, { configurable: false }); + +try +{ + Object.defineProperty(arr, "length", { value: 0, writable: false }); +} +catch (e) +{ + assertEq(e instanceof TypeError, true, + "must throw TypeError when array truncation would have to remove " + + "non-configurable elements"); +} + +assertEq(arr.length, 2, "length is highest remaining index plus one"); + +var desc = Object.getOwnPropertyDescriptor(arr, "length"); +assertEq(desc !== undefined, true); + +assertEq(desc.value, 2); +assertEq(desc.writable, false); +assertEq(desc.enumerable, false); +assertEq(desc.configurable, false); + +/******************************************************************************/ + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("Tests complete"); |