HTMLCollection-live-item-removal.html

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This WPT test may be referenced by the following Test IDs:
- /dom/collections/HTMLCollection-live-item-removal.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>HTMLCollection liveness during item removal</title>

<meta charset="utf-8">

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

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

<!-- Regression test for https://github.com/jsdom/jsdom/issues/1517 -->

<div id="container1">

  <div class="test">1</div>

  <div class="test">2</div>

  <div class="test">3</div>

  <div class="test">4</div>

</div>

<div id="container2">

  <div class="test2">1</div>

  <div class="test2">2</div>

  <div class="test2">3</div>

  <div class="test2">4</div>

</div>

<script>

"use strict";

test(() => {

  const container = document.getElementById("container1");

  const collection = container.getElementsByClassName("test");

  const processed = [];

  while (collection.length > 0) {

    const item = collection.item(0);

    assert_not_equals(item, null, "item(0) should not be null when length > 0");

    processed.push(item.textContent);

    item.parentNode.removeChild(item);

  assert_array_equals(processed, ["1", "2", "3", "4"], "All items should be processed in order");

}, "getElementsByClassName collection should update live when removing item(0)");

test(() => {

  const collection = document.body.getElementsByClassName("test2"); // Query from body

  const processed = [];

  while (collection.length > 0) {

    const item = collection.item(0);

    assert_not_equals(item, null, "item(0) should not be null when length > 0");

    processed.push(item.textContent);

    item.parentNode.removeChild(item);

  assert_array_equals(processed, ["1", "2", "3", "4"], "All items should be processed in order");

}, "document.body.getElementsByClassName collection should update live when removing item(0)");

</script>