<!DOCTYPE html>
<meta name="timeout" content="long">
<title>Window Management test: target-screen element.requestFullscreen()</title>
<link rel="help" href="https://w3c.github.io/window-management/">
Tests use of multi-screen details to move fullscreen between screens.<br>
The host device must have 2+ screens to yield meaningful results.<br><br>
<ul id="list"></ul>
<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/helpers.js"></script>
<script>
'use strict';

promise_test(async test => {
  await setUpWindowManagement(test);
  const originalScreen = window.screenDetails.currentScreen;
  // Request fullscreen on the current screen; the window should stay there.
  await buttonClick(test, `Request fullscreen on '${originalScreen.label}'`);
  await document.documentElement.requestFullscreen({ screen: originalScreen });
  await assertWindowOnScreen(window, originalScreen);
  assert_true(!!document.fullscreenElement);

  for (const s of window.screenDetails.screens) {
    // Request fullscreen on screen `s`; `window` should move there.
    await buttonClick(test, `Request fullscreen on '${s.label}'`);
    await document.documentElement.requestFullscreen({ screen: s });
    await assertWindowOnScreen(window, s);
    assert_true(!!document.fullscreenElement);
  }

  // Exit fullscreen; `window` should move back to `originalScreen`.
  await buttonClick(test, `Exit fullscreen`);
  await document.exitFullscreen();
  await assertWindowOnScreen(window, originalScreen);
  assert_false(!!document.fullscreenElement);
}, 'Use multi-screen details to move fullscreen between screens');
</script>