mozilla-central: testing/web-platform/tests/css/css-values/viewport-units-media-queries.html@9ccc6a2267cbf69c621fec973bd28573c2a45a1f

Bug 1966586 - Reuse other browser windows when opening _blank links in Taskbar Tabs windows. r=nrishel This doesn't affect other tab additions, nor does it stop the tab bar from appearing altogether. The idea is that _if_ another tab is somehow made, the user should see it; but we should not create new tabs if we can avoid it. This also adds tests for opening URIs in popups and taskbar tabs to make it less likely that this breaks in future. Differential Revision: https://phabricator.services.mozilla.com/D253726

<!DOCTYPE html>
<title>Viewport units in @media</title>
<link rel="help" href="https://drafts.csswg.org/css-values-4/#viewport-relative-lengths">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>

<style>
  iframe {
    width: 200px;
    height: 100px;
  }
</style>

<iframe id=iframe></iframe>

<script>

const doc = iframe.contentDocument;
const win = iframe.contentWindow;

function test_media_query(feature, result, description) {
  test((t) => {
    t.add_cleanup(() => { doc.body.innerHTML = ''; })
    doc.body.innerHTML = `
      <style>
        body {
          color: red;
        }
        @media (${feature}) {
          body {
            color: green;
          }
        }
      </style>
      `;
    assert_equals(win.getComputedStyle(doc.body).color, result);
  }, description);
}

function test_media_query_applies(feature) {
  test_media_query(feature, 'rgb(0, 128, 0)', `@media(${feature}) applies`);
}

function test_media_query_does_not_apply(feature) {
  test_media_query(feature, 'rgb(255, 0, 0)', `@media(${feature}) does not apply`);
}

test_media_query_applies('width:100vw');
test_media_query_applies('width:100vi');
test_media_query_applies('width:100vmax');
test_media_query_applies('width:100svw');
test_media_query_applies('width:100svi');
test_media_query_applies('width:100svmax');
test_media_query_applies('width:100lvw');
test_media_query_applies('width:100lvi');
test_media_query_applies('width:100lvmax');
test_media_query_applies('width:100dvw');
test_media_query_applies('width:100dvi');
test_media_query_applies('width:100dvmax');

test_media_query_applies('height:100vh');
test_media_query_applies('height:100vb');
test_media_query_applies('height:100vmin');
test_media_query_applies('height:100svh');
test_media_query_applies('height:100svb');
test_media_query_applies('height:100svmin');
test_media_query_applies('height:100lvh');
test_media_query_applies('height:100lvb');
test_media_query_applies('height:100lvmin');
test_media_query_applies('height:100dvh');
test_media_query_applies('height:100dvb');
test_media_query_applies('height:100dvmin');

test_media_query_does_not_apply('width:90vw');
test_media_query_does_not_apply('height:90vh');

</script>

author	Duncan McIntosh <dmcintosh@mozilla.com>
	Wed, 09 Jul 2025 19:42:02 +0000 (5 hours ago)
changeset 795924	9ccc6a2267cbf69c621fec973bd28573c2a45a1f
parent 608958	e1324f6b56d0cf65b60bfcf4d63e34bd0ac5fa7c
permissions	-rw-r--r--