xrSession_prevent_multiple_exclusive.https.html
<!DOCTYPE html>
<body>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="resources/webxr_util.js"></script>
<canvas></canvas>
<script>
xr_promise_test(
"Test prevention of multiple simultaneous immersive sessions",
(t) => {
return XRTest.simulateDeviceConnection({ supportsImmersive:true })
.then( (controller) => { return navigator.xr.requestDevice() })
.then( (device) => new Promise((resolve) => {
XRTest.simulateUserActivation( () => {
resolve(device.requestSession({ immersive: true })
.then( (session) => new Promise((resolve) => {
XRTest.simulateUserActivation( () => {
// Requesting a second immersive session from a device that already
// has an active immersive session should fail. Immersive sessions
// should take up the users entire view, and therefore it should
// be impossible for a user to be engaged with more than one.
resolve(promise_rejects(
t,
"InvalidStateError",
device.requestSession({ immersive: true })
).then( () => {
// End the immersive session and try again. Now the immersive
// session creation should succeed.
return session.end().then( () => new Promise((resolve) => {
XRTest.simulateUserActivation( () => {
resolve(device.requestSession({ immersive: true }));
});
}));
}));
});
})));
});
}));
});
</script>
</body>
