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// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options
// 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-array.prototype.reduceright
description: TypedArray instance buffer can be resized during iteration
includes: [testTypedArray.js, compareArray.js]
features: [TypedArray, resizable-arraybuffer]
---*/
testWithTypedArrayConstructors(function(TA) {
var BPE = TA.BYTES_PER_ELEMENT;
var buffer = new ArrayBuffer(BPE * 3, {maxByteLength: BPE * 3});
var sample = new TA(buffer);
var expectedPrevsShrink, expectedNextsShrink, expectedIndicesShrink, expectedArraysShrink;
var expectedPrevsGrow, expectedNextsGrow, expectedIndicesGrow, expectedArraysGrow;
var prevs, nexts, indices, arrays, result;
prevs = [];
nexts = [];
indices = [];
arrays = [];
result = Array.prototype.reduceRight.call(sample, function(prev, next, index, array) {
if (prevs.length === 0) {
try {
buffer.resize(BPE);
expectedPrevsShrink = [262, 2];
expectedNextsShrink = [0, 0];
expectedIndicesShrink = [2, 0];
expectedArraysShrink = [sample, sample];
expectedPrevsGrow = [262];
expectedNextsGrow = [0];
expectedIndicesGrow = [0];
expectedArraysGrow = [sample];
} catch (_) {
expectedPrevsShrink = expectedPrevsGrow = [262, 2, 1];
expectedNextsShrink = expectedNextsGrow = [0, 0, 0];
expectedIndicesShrink = expectedIndicesGrow = [2, 1, 0];
expectedArraysShrink = expectedArraysGrow = [sample, sample, sample];
}
}
prevs.push(prev);
nexts.push(next);
indices.push(index);
arrays.push(array);
return index;
}, 262);
assert.compareArray(prevs, expectedPrevsShrink, 'prevs (shrink)');
assert.compareArray(nexts, expectedNextsShrink, 'nexts (shrink)');
assert.compareArray(indices, expectedIndicesShrink, 'indices (shrink)');
assert.compareArray(arrays, expectedArraysShrink, 'arrays (shrink)');
assert.sameValue(result, 0, 'result (shrink)');
prevs = [];
nexts = [];
indices = [];
arrays = [];
result = Array.prototype.reduceRight.call(sample, function(prev, next, index, array) {
if (prevs.length === 0) {
try {
buffer.resize(3 * BPE);
} catch (_) {}
}
prevs.push(prev);
nexts.push(next);
indices.push(index);
arrays.push(array);
return index;
}, 262);
assert.compareArray(prevs, expectedPrevsGrow, 'prevs (grow)');
assert.compareArray(nexts, expectedNextsGrow, 'nexts (grow)');
assert.compareArray(indices, expectedIndicesGrow, 'indices (grow)');
assert.compareArray(arrays, expectedArraysGrow, 'arrays (grow)');
assert.sameValue(result, expectedIndicesGrow[expectedIndicesGrow.length - 1], 'result (grow)');
});
reportCompare(0, 0);
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