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Test Info: Warnings

<!DOCTYPE html>
<title>View Transitions: @view-transition opt-in programmatically.</title>
<link rel="author" href="mailto:bokan@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style id="vt-style">
@view-transition {
navigation: none;
}
</style>
<script>
function optIn() {
document.querySelector("#vt-style").innerHTML = `@view-transition { navigation: auto }`;
}
const params = new URLSearchParams(location.search);
optIn();
// This file includes 3 modes: test, old, new.
// "test" is where testharness runs. "old" -> "new" is where the view transition takes place.
switch (params.get("mode") || "test") {
case "test":
promise_test(async t => {
const event = await new Promise(resolve => {
window.did_reveal = e => { resolve(e) };
const popup = window.open("?mode=old");
t.add_cleanup(() => popup.close());
});
assert_not_equals(event.viewTransition, null, "ViewTransition must be triggered.");
});
break;
case "old":
onload = () => requestAnimationFrame(() => requestAnimationFrame(() => {
location.replace('?mode=new');
}));
break;
case "new":
onpagereveal = e => window.opener.did_reveal(e);
}
</script>
<body>
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</body>