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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/splice-species-changes-length.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/splice-species-changes-length.js | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/splice-species-changes-length.js b/js/src/tests/non262/Array/splice-species-changes-length.js new file mode 100644 index 0000000000..0e4ed32b01 --- /dev/null +++ b/js/src/tests/non262/Array/splice-species-changes-length.js @@ -0,0 +1,48 @@ +// Case 1: splice() removes an element from the array. +{ + let array = []; + array.push(0, 1, 2); + + array.constructor = { + [Symbol.species]: function(n) { + // Increase the initialized length of the array. + array.push(3, 4, 5); + + // Make the length property non-writable. + Object.defineProperty(array, "length", {writable: false}); + + return new Array(n); + } + } + + assertThrowsInstanceOf(() => Array.prototype.splice.call(array, 0, 1), TypeError); + + assertEq(array.length, 6); + assertEqArray(array, [1, 2, /* hole */, 3, 4, 5]); +} + +// Case 2: splice() adds an element to the array. +{ + let array = []; + array.push(0, 1, 2); + + array.constructor = { + [Symbol.species]: function(n) { + // Increase the initialized length of the array. + array.push(3, 4, 5); + + // Make the length property non-writable. + Object.defineProperty(array, "length", {writable: false}); + + return new Array(n); + } + } + + assertThrowsInstanceOf(() => Array.prototype.splice.call(array, 0, 0, 123), TypeError); + + assertEq(array.length, 6); + assertEqArray(array, [123, 0, 1, 2, 4, 5]); +} + +if (typeof reportCompare === "function") + reportCompare(true, true); |