not-pseudo-containing-sibling-relationship-in-has.html

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This WPT test may be referenced by the following Test IDs:
- /css/selectors/invalidation/not-pseudo-containing-sibling-relationship-in-has.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>CSS Selectors Test: :has(:not()) invalidation for sibling change</title>

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

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

<link rel="help" href="https://drafts.csswg.org/selectors/#relational">

<style>

  #test-container > div { background-color: green; }

  #target1:has(:not(.item, :nth-child(3))) { background-color: red; }

  #target2:has(:not(.item, :nth-last-child(3))) { background-color: red; }

</style>

<div id="test-container">

  <div id="target1">

    <div class="item"></div>

    <div id="item1">This text should have a green background</div>

  </div>

  <div id="target2">

    <div id="item2">This text should have a green background</div>

    <div class="item"></div>

  </div>

</div>

<script>

  test(() => {

    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(255, 0, 0)");

    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(255, 0, 0)");

  }, "Initially red");

  function insertDivItemBefore(item) {

    let div = document.createElement("div");

    div.classList.add("item");

    item.parentElement.insertBefore(div, item);

  function insertDivItemAfter(item) {

    let div = document.createElement("div");

    div.classList.add("item");

    item.parentElement.append(div, item.nextSibling);

  test(() => {

    insertDivItemBefore(item1);

    assert_equals(getComputedStyle(target1).backgroundColor, "rgb(0, 128, 0)");

  }, ":nth-child() enclosed by :not() matching after insertion");

  test(() => {

    insertDivItemAfter(item2);

    assert_equals(getComputedStyle(target2).backgroundColor, "rgb(0, 128, 0)");

  }, ":nth-last-child() enclosed by :not() matching after insertion");

</script>