LayoutTests/fast/mediastream/screencapture-user-gesture.html

<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
promise_test(() => {
    let promise;
    internals.withUserGesture(() => {
        promise = navigator.mediaDevices.getDisplayMedia();
    });
    return promise;
}, "Allow getDisplayMedia call in case of user gesture");

promise_test(() => {
    let promise;
    internals.withUserGesture(() => {
        const promise1 = navigator.mediaDevices.getDisplayMedia({video : true});
        const promise2 = navigator.mediaDevices.getDisplayMedia({video : true}).then(() => {
            return Promise.reject("Second promise should reject");
        }, () => {
            return "Second promise rejected";
        });
        promise = Promise.all([promise1, promise2]);
    });
    return promise;
}, "Disallow getDisplayMedia calls in case of user gesture if not the first call");


promise_test((test) => {
    return promise_rejects_dom(test, "InvalidAccessError", navigator.mediaDevices.getDisplayMedia({video : true}));
}, "Deny getDisplayMedia call if no user gesture");
</script>