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<!DOCTYPE HTML>
<meta charset="utf-8">
<title>Test for bug 1639328</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<style>
/* To ensure that they're all in the viewport when displayed */
iframe {
width: 10px;
height: 10px;
}
</style>
<iframe id="http" src="https://example.com/tests/dom/base/test/file_bug1639328.html"></iframe>
<iframe id="https" src="https://example.com/tests/dom/base/test/file_bug1639328.html"></iframe>
<iframe id="same-origin" src="file_bug1639328.html"></iframe>
<iframe id="display-none-http" style="display: none" src="https://example.com/tests/dom/base/test/file_bug1639328.html"></iframe>
<iframe id="display-none-https" style="display: none" src="https://example.com/tests/dom/base/test/file_bug1639328.html"></iframe>
<iframe id="display-none-same-origin" style="display: none" src="file_bug1639328.html"></iframe>
<script>
SimpleTest.waitForExplicitFinish();
function getOneMessage(frame) {
info(`querying ${frame.src} (${frame.id})`);
let resolve;
let promise = new Promise(r => { resolve = r; });
window.addEventListener("message", function(e) {
info("got " + JSON.stringify(e.data));
resolve(e.data);
}, { once: true });
frame.contentWindow.postMessage("ping", "*");
return promise;
}
async function ticks(n) {
for (let i = 0; i < n; ++i) {
await new Promise(resolve => requestAnimationFrame(resolve));
}
}
async function checkFrame(frame, shouldThrottle) {
let message = null;
do {
if (message) {
await ticks(2);
}
message = await getOneMessage(frame);
} while (message.throttledFrameRequests != shouldThrottle);
is(message.throttledFrameRequests, shouldThrottle, frame.id);
}
onload = async function() {
await SimpleTest.promiseFocus(window);
await ticks(2);
is(SpecialPowers.DOMWindowUtils.effectivelyThrottlesFrameRequests, false, "Should not be throttling main page");
for (let frame of document.querySelectorAll("iframe")) {
let shouldThrottle = frame.style.display == "none";
await checkFrame(frame, shouldThrottle);
info("Switching display of " + frame.id);
frame.style.display = shouldThrottle ? "" : "none";
await checkFrame(frame, !shouldThrottle);
info("And switching display back for " + frame.id);
frame.style.display = shouldThrottle ? "none" : "";
await checkFrame(frame, shouldThrottle);
}
SimpleTest.finish();
};
</script>
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