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<!DOCTYPE html>
<!-- Based on similar tests in html/infrastructure/safe-passing-of-structured-data/shared-array-buffers/ -->
<meta charset="utf-8">
<title>Structured cloning of WebAssembly.Module: BroadcastChannel within the same agent cluster</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="./resources/test-incrementer.js"></script>
<div id="log"></div>
<script>
"use strict";
promise_test(t => {
return createWasmModule().then(module => {
let loadedIframes = 0;
return Promise.all([
createIFrame("resources/broadcastchannel-iframe.html"),
createIFrame("resources/broadcastchannel-iframe.html"),
createIFrame("resources/broadcastchannel-iframe.html")
]).then(() => {
const thisIframe = loadedIframes++;
const channel = new BroadcastChannel("channel name");
return new Promise(resolve => {
let soFar = 0;
channel.onmessage = t.step_func(msg => {
if (msg.module) {
// We only care about "broadcasts" from the workers.
return;
}
let {i, result} = msg.data;
assert_in_array(i, [0, 1, 2], "Any message events must come from expected sources");
assert_equals(result, i + 1, `iframe ${i} must return ${i+1}`);
++soFar;
if (soFar === 3) {
resolve();
}
});
channel.postMessage({ module, i: thisIframe });
});
});
});
});
function createIFrame(src) {
return new Promise((resolve, reject) => {
const iframe = document.createElement("iframe");
iframe.src = src;
iframe.onload = () => resolve(iframe);
iframe.onerror = () => reject(`iframe with URL ${src} failed to load`);
document.body.appendChild(iframe);
});
}
</script>
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