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<!DOCTYPE html>
<html>
<title>View transitions: Transition in a hidden page</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<meta name="timeout" content="long">
<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="resources/webxr_util.js"></script>
<script src="resources/webxr_test_constants.js"></script>
<script src="../page-visibility/resources/window_state_context.js"></script>
<script>
let watcherDone = new Event("watcherdone");
let fakeDeviceInitParams = TRACKED_IMMERSIVE_DEVICE;
let testName = "Ensures that the XRSession's visibilityState is correctly "
+ "reported and that the associated visibilitychange event fires for "
+ "non-immersive sessions.";
promise_test(
async (setup) => {
xr_session_promise_test(
testName,
(session, fakeDeviceController, t) => {
let wsc = null;
let eventWatcher = new EventWatcher(
t, session, ["visibilitychange", "watcherdone"]);
let eventPromise = eventWatcher.wait_for(
["visibilitychange", "visibilitychange", "watcherdone"]);
async function showDocument() {
await wsc.restore();
}
async function hideDocument() {
wsc = window_state_context(t);
await wsc.minimize();
}
function onSessionVisibilityChangeVisible(event) {
t.step( () => {
assert_equals(session.visibilityState, "visible");
});
t.step_timeout(()=>{
session.dispatchEvent(watcherDone);
}, 300);
}
function onSessionVisibilityChangeHidden(event) {
t.step( () => {
assert_equals(session.visibilityState, "hidden");
});
session.removeEventListener("visibilitychange", onSessionVisibilityChangeHidden, false);
session.addEventListener("visibilitychange", onSessionVisibilityChangeVisible, false);
showDocument();
}
assert_equals(session.visibilityState, "visible");
session.addEventListener("visibilitychange", onSessionVisibilityChangeHidden, false);
hideDocument();
return eventPromise;
},
fakeDeviceInitParams, 'inline'
);
},
"setup"
);
</script>
</body>
</html>
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