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// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize
const TypedArrayByteOffset = getSelfHostedValue("TypedArrayByteOffset");
function testTypedArrayByteOffset() {
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(TypedArrayByteOffset(ta), i & 3);
}
}
testTypedArrayByteOffset();
function testTypedArrayByteOffsetOutOfBounds() {
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];
assertEq(TypedArrayByteOffset(ta), i & 3);
}
}
testTypedArrayByteOffsetOutOfBounds();
function testTypedArrayByteOffsetDetached() {
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(TypedArrayByteOffset(ta), 0);
}
}
testTypedArrayByteOffsetDetached();
function testTypedArrayByteOffsetWithShared() {
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(TypedArrayByteOffset(ta), i & 3);
}
}
testTypedArrayByteOffsetWithShared();