invalidation-001.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-nesting/invalidation-001.html - WPT Dashboard Interop Dashboard

<!doctype html>

<title>CSS Selectors nested invalidation on changed parent</title>

<link rel="author" title="Steinar H. Gunderson" href="mailto:sesse@chromium.org">

<link rel="help" href="https://drafts.csswg.org/css-nesting-1/">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<style>

  .b {

    color: red;

  .a {

    & .b {

      color: green;

</style>

<div id="container">

  <div id="child" class="b">

    Test passes if color is green.

  </div>

</div>

<script>

  test(() => {

    let container = document.getElementById('container');

    let child = document.getElementById('child');

    assert_equals(getComputedStyle(child).color, 'rgb(255, 0, 0)');

    container.classList.add('a');

    assert_equals(getComputedStyle(child).color, 'rgb(0, 128, 0)');

});

</script>