tyler.durden
/
test262
mirror of https://github.com/tc39/test262.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Update Object.freeze tests for resizable TypedArrays 

Object.freeze will always throw on variable-length TAs with this
has-consensus PR: https://github.com/tc39/ecma262/pull/3453
This commit is contained in:
Shu-yu Guo 2024-11-13 10:46:21 -08:00 committed by Philip Chimento
parent 901dd6e920
commit dacf5ff845
1 changed files with 16 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
test/built-ins/Object/freeze/typedarray-backed-by-resizable-buffer.js
View File

@ -5,12 +5,11 @@
esid: sec-object.freeze
description: >
Object.freeze throws on non-0-length TypedArrays backed by resizable
buffers but do not throw on 0-length ones
buffers
features: [resizable-arraybuffer]
includes: [resizableArrayBufferUtils.js]
---*/
// Freezing non-OOB non-zero-length TAs throws.
for (let ctor of ctors) {
const rab = CreateResizableArrayBuffer(4 * ctor.BYTES_PER_ELEMENT, 8 * ctor.BYTES_PER_ELEMENT);
const fixedLength = new ctor(rab, 0, 4);
@ -36,9 +35,15 @@ for (let ctor of ctors) {
const fixedLength = new ctor(rab, 0, 0);
const fixedLengthWithOffset = new ctor(rab, 2 * ctor.BYTES_PER_ELEMENT, 0);
const lengthTrackingWithOffset = new ctor(rab, 4 * ctor.BYTES_PER_ELEMENT);
assert.throws(TypeError, () => {
Object.freeze(fixedLength);
});
assert.throws(TypeError, () => {
Object.freeze(fixedLengthWithOffset);
});
assert.throws(TypeError, () => {
Object.freeze(lengthTrackingWithOffset);
});
}
// If the buffer has been resized to make length-tracking TAs zero-length,
// freezing them also doesn't throw.
@ -47,7 +52,11 @@ for (let ctor of ctors) {
const lengthTracking = new ctor(rab);
const lengthTrackingWithOffset = new ctor(rab, 2 * ctor.BYTES_PER_ELEMENT);
rab.resize(2 * ctor.BYTES_PER_ELEMENT);
assert.throws(TypeError, () => {
Object.freeze(lengthTrackingWithOffset);
});
rab.resize(0 * ctor.BYTES_PER_ELEMENT);
assert.throws(TypeError, () => {
Object.freeze(lengthTracking);
});
}