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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-%typedarray%.prototype.copywithin
description: Return abrupt when "this" value fails buffer boundary checks
includes: [testBigIntTypedArray.js]
features: [ArrayBuffer, BigInt, TypedArray, arrow-function, resizable-arraybuffer]
---*/
assert.sameValue(
typeof TypedArray.prototype.copyWithin,
'function',
'implements TypedArray.prototype.copyWithin'
);
assert.sameValue(
typeof ArrayBuffer.prototype.resize,
'function',
'implements ArrayBuffer.prototype.resize'
);
testWithBigIntTypedArrayConstructors(TA => {
var BPE = TA.BYTES_PER_ELEMENT;
var ab = new ArrayBuffer(BPE * 4, {maxByteLength: BPE * 5});
var array = new TA(ab, BPE, 2);
try {
ab.resize(BPE * 5);
} catch (_) {}
// no error following grow:
array.copyWithin(0, 0);
try {
ab.resize(BPE * 3);
} catch (_) {}
// no error following shrink (within bounds):
array.copyWithin(0, 0);
var expectedError;
try {
ab.resize(BPE * 2);
// If the preceding "resize" operation is successful, the typed array will
// be out out of bounds, so the subsequent prototype method should produce
// a TypeError due to the semantics of ValidateTypedArray.
expectedError = TypeError;
} catch (_) {
// The host is permitted to fail any "resize" operation at its own
// discretion. If that occurs, the copyWithin operation should complete
// successfully.
expectedError = Test262Error;
}
assert.throws(expectedError, () => {
array.copyWithin(0, 0);
throw new Test262Error('copyWithin completed successfully');
});
});
reportCompare(0, 0);
|
