wpt/css/css-mixins/basic.html at 6f1be26ec00ebb294ec6766ad7614b47bfc87447 · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <title>CSS Mixins: Basic test</title>
    <link rel="help" href="https://drafts.csswg.org/css-mixins-1/#defining-mixins">
    <script src="/resources/testharness.js"></script>
    <script src="/resources/testharnessreport.js"></script>
    <style>
      @mixin --m1() {
        .cls {
          color: green;
        }
      }
      @mixin invalid-name() {
        .cls {
          color: red;
        }
      }
      @mixin missing-argument-list {
        .cls {
          color: red;
        }
      }
      @mixin --empty() {}
      div {
        @apply --m1;
        @apply invalid-name;
        @apply missing-argument-list;
        @apply --empty;
      }
    </style>
  </head>
  <body>
    <div><div class="cls" id="target">This text should be green.</div></div>
  <script>
    test(() => {
      let target = document.getElementById('target');
      assert_equals(getComputedStyle(target).color, 'rgb(0, 128, 0)');
    });
  </script>
  </body>
</html>