lock-unlock-check.html | Explore in Territory

<!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 {
    attachIframe,
    getOppositeOrientation,
    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 eventPromise = new Promise((res, rej) => {
      screen.orientation.addEventListener(
        "change",
        () => {
          screen.orientation
            .lock(getOppositeOrientation())
            .then(res)
            .catch(rej);
        },
        { once: true }
      );
    });
    const lockPromise = screen.orientation.lock(getOppositeOrientation());
    await Promise.all([eventPromise, lockPromise]);
  }, "Re-locking the screen orientation after a change event fires must not abort");

  promise_test(async (t) => {
    t.add_cleanup(makeCleanup());
    await test_driver.bless("request full screen");
    await document.documentElement.requestFullscreen();
    const eventPromise = new Promise((res) => {
      screen.orientation.addEventListener(
        "change",
        () => {
          screen.orientation.unlock();
          res();
        },
        { once: true }
      );
    });
    const lockPromise = screen.orientation.lock(getOppositeOrientation());
    await Promise.all([eventPromise, lockPromise]);
  }, "Unlocking the screen orientation after a change event must not abort");
</script>
chromium/third_party/blink/web_tests/external/wpt/screen-orientation/lock-unlock-check.html
