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<!DOCTYPE html>
<meta charset="utf-8" />
<meta viewport="width=device-width, initial-scale=1" />
<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 type="module">
import { makeCleanup } from "./resources/orientation-utils.js";
promise_test(async t => {
t.add_cleanup(makeCleanup());
await test_driver.bless("request full screen");
await document.documentElement.requestFullscreen();
const type = screen.orientation.type.startsWith("portrait") ? "portrait" : "landscape";
screen.orientation.onchange = t.unreached_func("change event should not be fired");
await screen.orientation.lock(type);
assert_true(screen.orientation.type.startsWith(type));
}, "Test that orientationchange event is not fired when the orientation does not change.");
promise_test(async t => {
t.add_cleanup(makeCleanup());
await test_driver.bless("request full screen");
await document.documentElement.requestFullscreen();
let orientations = [
'portrait',
'landscape',
];
if (screen.orientation.type.startsWith('portrait')) {
orientations = orientations.reverse();
}
const orientationWatcher = new EventWatcher(t, screen.orientation, 'change');
for (const orientation of orientations) {
// change event is fired before resolving promise by lock.
let lockPromise = screen.orientation.lock(orientation);
const result = await Promise.race([
lockPromise,
orientationWatcher.wait_for('change'),
]);
assert_true(result instanceof Event, "The event must be fired first.");
assert_true(screen.orientation.type.startsWith(orientation), "The orientation must match");
await lockPromise;
}
}, "Test that orientationchange event is fired when the orientation changes.");
</script>
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