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// |reftest| skip -- resizable-arraybuffer is not supported
// Copyright (C) 2021 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-integer-indexed-exotic-objects-ownpropertykeys
description: returned keys reflect resized ArrayBuffer for a dynamically-sized TypedArray
info: |
9.4.5.6 [[OwnPropertyKeys]] ()
...
3. Let getBufferByteLength be !
MakeIdempotentArrayBufferByteLengthGetter(SeqCst).
4. Let len be IntegerIndexedObjectLength(O, getBufferByteLength).
5. For each integer i starting with 0 such that i < len, in ascending order,
a. Add ! ToString(i) as the last element of keys.
...
includes: [testTypedArray.js]
features: [Reflect, TypedArray, resizable-arraybuffer]
---*/
// If the host chooses to throw as allowed by the specification, the observed
// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
// has not been implemented. The following assertion prevents this test from
// passing in runtimes which have not implemented the method.
assert.sameValue(typeof ArrayBuffer.prototype.resize, "function");
testWithTypedArrayConstructors(function(TA) {
var BPE = TA.BYTES_PER_ELEMENT;
var ab = new ArrayBuffer(BPE * 4, {maxByteLength: BPE * 5});
var array = new TA(ab, BPE);
var expected = "0,1,2";
assert.sameValue(Reflect.ownKeys(array).join(","), expected, "initial");
try {
ab.resize(BPE * 5);
expected = "0,1,2,3";
} catch (_) {}
assert.sameValue(Reflect.ownKeys(array).join(","), expected, "following grow");
try {
ab.resize(BPE * 3);
expected = "0,1";
} catch (_) {}
assert.sameValue(
Reflect.ownKeys(array).join(","), expected, "following shrink (within bounds)"
);
try {
ab.resize(BPE);
expected = "";
} catch (_) {}
assert.sameValue(
Reflect.ownKeys(array).join(","), expected, "following shrink (on boundary)"
);
try {
ab.resize(0);
expected = "";
} catch (_) {}
assert.sameValue(
Reflect.ownKeys(array).join(","), expected, "following shrink (out of bounds)"
);
});
reportCompare(0, 0);
|
