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// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize
load(libdir + "asserts.js");
const TypedArrayLength = getSelfHostedValue("TypedArrayLength");
function testTypedArrayLength() {
let ab = new ArrayBuffer(100, {maxByteLength: 100});
let typedArrays = [
new Int8Array(ab),
new Int8Array(ab, 1),
new Int8Array(ab, 2),
new Int8Array(ab, 3),
];
for (let i = 0; i < 200; ++i) {
let ta = typedArrays[i & 3];
assertEq(TypedArrayLength(ta), 100 - (i & 3));
}
}
testTypedArrayLength();
function testTypedArrayLengthOutOfBounds() {
let ab = new ArrayBuffer(100, {maxByteLength: 100});
let typedArrays = [
new Int8Array(ab, 0, 10),
new Int8Array(ab, 1, 10),
new Int8Array(ab, 2, 10),
new Int8Array(ab, 3, 10),
];
// Resize to zero to make all views out-of-bounds.
ab.resize(0);
for (let i = 0; i < 200; ++i) {
let ta = typedArrays[i & 3];
assertThrowsInstanceOf(() => TypedArrayLength(ta), TypeError);
}
}
testTypedArrayLengthOutOfBounds();
function testTypedArrayLengthDetached() {
let ab = new ArrayBuffer(100, {maxByteLength: 100});
let typedArrays = [
new Int8Array(ab, 0, 10),
new Int8Array(ab, 1, 10),
new Int8Array(ab, 2, 10),
new Int8Array(ab, 3, 10),
];
// Detach the buffer.
ab.transfer();
for (let i = 0; i < 200; ++i) {
let ta = typedArrays[i & 3];
assertEq(TypedArrayLength(ta), 0);
}
}
testTypedArrayLengthDetached();
function testTypedArrayLengthWithShared() {
let ab = new SharedArrayBuffer(100, {maxByteLength: 100});
let typedArrays = [
new Int8Array(ab),
new Int8Array(ab, 1),
new Int8Array(ab, 2),
new Int8Array(ab, 3),
];
for (let i = 0; i < 200; ++i) {
let ta = typedArrays[i & 3];
assertEq(TypedArrayLength(ta), 100 - (i & 3));
}
}
testTypedArrayLengthWithShared();