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// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize
// Test TypedArray constructor when called with resizable ArrayBuffers.
function testArrayBuffer() {
function test() {
var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < 200; ++i) {
var ta = new Int32Array(ab);
assertEq(ta.length, 4);
// Ensure auto-length tracking works correctly.
ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 5);
ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 2);
// Reset to original length.
ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testArrayBuffer();
function testArrayBufferAndByteOffset() {
function test() {
var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < 200; ++i) {
var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 3);
// Ensure auto-length tracking works correctly.
ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 4);
ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 1);
// Reset to original length.
ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testArrayBufferAndByteOffset();
function testArrayBufferAndByteOffsetAndLength() {
function test() {
var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < 200; ++i) {
var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT, 2);
assertEq(ta.length, 2);
// Ensure length doesn't change when resizing the buffer.
ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 2);
// Returns zero when the TypedArray get out-of-bounds.
ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 0);
// Reset to original length.
ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testArrayBufferAndByteOffsetAndLength();
function testWrappedArrayBuffer() {
var g = newGlobal();
function test() {
var ab = new g.ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
for (var i = 0; i < 200; ++i) {
var ta = new Int32Array(ab);
assertEq(ta.length, 4);
// Ensure auto-length tracking works correctly.
ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 5);
ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
assertEq(ta.length, 2);
// Reset to original length.
ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
}
}
for (var i = 0; i < 2; ++i) {
test();
}
}
testWrappedArrayBuffer();