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chromium/third_party/blink/web_tests/external/wpt/css/selectors/invalidation/not-001.html 

<!DOCTYPE html>
<title>CSS Selectors Invalidation: complex :not()</title>
<link rel="help" href="https://drafts.csswg.org/selectors-4/#negation">
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:[email protected]">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
  * {
    color: yellow;
  }
  :not(.b ~ *) {
    color: green;
  }
</style>
<div id="b">
</div>
<div class="c">
</div>
<div class="d">
</div>
<script>
  var black = "rgb(0, 0, 0)";
  var blue = "rgb(0, 0, 255)";
  var green = "rgb(0, 128, 0)";
  var red = "rgb(255, 0, 0)";
  var yellow = "rgb(255, 255, 0)";

  test(() => {
    assert_equals(getComputedStyle(document.querySelector("#b")).color, green);
    assert_equals(getComputedStyle(document.querySelector(".c")).color, green);
    assert_equals(getComputedStyle(document.querySelector(".d")).color, green);
  }, "precondition");

  test(() => {
    document.getElementById("b").className = "b";
    assert_equals(getComputedStyle(document.querySelector("#b")).color, green);
    assert_equals(getComputedStyle(document.querySelector(".c")).color, yellow);
    assert_equals(getComputedStyle(document.querySelector(".d")).color, yellow);
  }, "Invalidation of sibling combinators in :not()");
</script>