<!DOCTYPE HTML><!-- webkit-test-runner [ jscOptions=--useSharedArrayBuffer=true ] -->
<html>
<head>
<title>Growable SharedArrayBuffers typed array should be serializable</title>
<script src="../../resources/js-test-pre.js"></script>
</head>
<body>
<script>
description("Growable SharedArrayBuffers typed array should be serializable");
window.jsTestIsAsync = true;

var arrayBuffer = new SharedArrayBuffer(36, { maxByteLength: 128 });
var int32AutoArray = new Int32Array(arrayBuffer, 4);

shouldBeTrue(`arrayBuffer.growable`);
shouldBe(`arrayBuffer.byteLength`, `36`);
shouldBe(`arrayBuffer.maxByteLength`, `128`);
shouldBe(`int32AutoArray.length`, `8`);
shouldBe(`int32AutoArray.byteOffset`, `4`);

async function createWorker(script)
{
    script += "self.postMessage('ready');";
    const blob = new Blob([script], { type: 'text/javascript' });
    const url = URL.createObjectURL(blob);
    const worker = new Worker(URL.createObjectURL(blob));
    await new Promise(resolve => worker.onmessage = () => {
        resolve();
    });
    URL.revokeObjectURL(url);
    return worker;
}

(async () => {
    const worker = await createWorker(`
        self.onmessage = (event) => {
            let data = event.data;
            self.postMessage(data);
        }
    `);

    const promise = new Promise(resolve => worker.onmessage = event => resolve(event.data));
    worker.postMessage(int32AutoArray);

    globalThis.result = await promise;
    shouldBeTrue(`result.buffer.growable`);
    shouldBe(`result.buffer.byteLength`, `36`);
    shouldBe(`result.buffer.maxByteLength`, `128`);
    shouldBe(`result.length`, `8`);
    shouldBe(`result.byteOffset`, `4`);
    result[0] = 42;
    shouldBe(`int32AutoArray[0]`, `42`);
    arrayBuffer.grow(128);
    shouldBe(`result.buffer.byteLength`, `128`);
    shouldBe(`result.buffer.maxByteLength`, `128`);
    shouldBe(`int32AutoArray.length`, `31`);
    shouldBe(`int32AutoArray.byteOffset`, `4`);
    shouldBe(`result.length`, `31`);
    shouldBe(`result.byteOffset`, `4`);
    finishJSTest();
})();
</script>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>