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Test Info: Warnings

<!DOCTYPE html>
<title>
Element#requestFullscreen() does not affect Screen sizes
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="../trusted-click.js"></script>
<body></body>
<script>
promise_test(async (t) => {
const screenWidth = window.screen.width;
const screenHeight = window.screen.height;
if ('onchange' in window.screen) {
window.screen.onchange = () => {
assert_equals(window.screen.width, screenWidth);
assert_equals(window.screen.height, screenHeight);
}
t.add_cleanup(() => { window.screen.onchange = null; });
}
// Await a test_driver or manual click, fullscreen promise, and change.
await Promise.all([trusted_request(), fullScreenChange()]);
t.add_cleanup(() => { document.exitFullscreen(); });
assert_not_equals(document.fullscreenElement, null);
// Ensure the screen size is unchanged during fullscreen.
assert_equals(window.screen.width, screenWidth);
assert_equals(window.screen.height, screenHeight);
}, "Screen size is unchanged during element fullscreen");
promise_test(async (t) => {
const screenWidth = window.screen.width;
const screenHeight = window.screen.height;
if ('onchange' in window.screen) {
window.screen.onchange = () => {
assert_equals(window.screen.width, screenWidth);
assert_equals(window.screen.height, screenHeight);
}
t.add_cleanup(() => { window.screen.onchange = null; });
}
// Await a test_driver or manual click to start tab content capture.
await trusted_click();
const stream = await navigator.mediaDevices.getDisplayMedia(
{video:{displaySurface:"browser"}, selfBrowserSurface:"include"});
const capabilities = stream.getVideoTracks()[0].getCapabilities();
assert_equals(capabilities.displaySurface, "browser");
t.add_cleanup(() => { stream.getTracks().forEach(t => t.stop()) });
// Await a test_driver or manual click, fullscreen promise, and change.
await Promise.all([trusted_request(), fullScreenChange()]);
t.add_cleanup(() => { document.exitFullscreen(); });
assert_not_equals(document.fullscreenElement, null);
// Ensure the screen size is unchanged during tab-capture fullscreen.
assert_equals(window.screen.width, screenWidth);
assert_equals(window.screen.height, screenHeight);
}, "Screen size is unchanged during tab-capture element fullscreen");
</script>