test_fullscreen_meta_viewport.html

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<!doctype html>

<title>Test for Bug 545812</title>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>

<script src="/tests/SimpleTest/EventUtils.js"></script>

<script>

SimpleTest.waitForExplicitFinish();

(async function() {

  await SpecialPowers.pushPrefEnv({

    set: [["dom.meta-viewport.enabled", true]]

});

  let win = window.open("file_fullscreen_meta_viewport.html", "", "width=500,height=500,scrollbars=yes");

  await SimpleTest.promiseFocus(win);

  is(win.innerWidth, 980, "Meta viewport should be in effect");

  let element = win.document.querySelector("#player");

  await SpecialPowers.wrap(element).requestFullscreen();

  ok(win.document.fullscreen, "Window should be in fullscreen");

  is(win.document.fullscreenElement, element, "#player should be the fullscreen element");

  is(win.innerWidth, screen.width, "Should be fullscreen (w)");

  is(win.innerHeight, screen.height, "Should be fullscreen (h)");

  is(element.clientWidth, win.innerWidth, "Element should fill the viewport vertically");

  is(element.clientHeight, win.innerHeight, "Element should fill the viewport vertically");

  SpecialPowers.wrap(win.document).exitFullscreen();

  win.close();

  SimpleTest.finish();

}())

</script>