wpt/css/css-cascade/scope-implicit.html at 54cd00c2757b2fa42e3bc36e8e0aaefbe152b8e4 · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<title>@scope - implicit scope root</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<main id=main></main>

<template id=test_basic>
  <div>
    <style>
      @scope {
        .a { z-index:1; }
      }
    </style>
    <div id=inner class=a></div>
  </div>
  <div id=outer class=a></div>
</template>
<script>
test((t) => {
  t.add_cleanup(() => main.replaceChildren());
  main.append(test_basic.content.cloneNode(true));

  assert_equals(getComputedStyle(inner).zIndex, '1');
  assert_equals(getComputedStyle(outer).zIndex, 'auto');
}, '@scope without prelude implicitly scopes to parent of owner node');
</script>

<template id=test_scope_pseudo>
  <div>
    <div></div>
  </div>
  <div>
    <div id=root>
      <style>
        @scope {
          :scope { z-index:1; }
        }
      </style>
      <div>
        <div></div>
      </div>
    </div>
  </div>
  <div>
    <div></div>
  </div>
</template>
<script>
test((t) => {
  t.add_cleanup(() => main.replaceChildren());
  main.append(test_scope_pseudo.content.cloneNode(true));

  assert_equals(getComputedStyle(root).zIndex, '1');

  // Only #root should be affected.
  for (let div of main.querySelectorAll('div:not(#root)')) {
    assert_equals(getComputedStyle(div).zIndex, 'auto');
  }
}, ':scope can style implicit root');
</script>

<template id=test_duplicate>
  <div>
    <style>
      @scope {
        .a { z-index:1; }
      }
    </style>
    <div id=first class=a></div>
  </div>
  <div>
    <style>
      @scope {
        .a { z-index:1; }
      }
    </style>
    <div id=second class=a></div>
  </div>
  <div id=outer class=a></div>
</template>
<script>
test((t) => {
  t.add_cleanup(() => main.replaceChildren());
  main.append(test_duplicate.content.cloneNode(true));

  assert_equals(getComputedStyle(first).zIndex, '1');
  assert_equals(getComputedStyle(second).zIndex, '1');
  assert_equals(getComputedStyle(outer).zIndex, 'auto');
}, '@scope works with two identical stylesheets');
</script>