1 files changed, 117 insertions, 0 deletions
diff --git a/testing/web-platform/tests/dom/nodes/Node-childNodes.html b/testing/web-platform/tests/dom/nodes/Node-childNodes.html
new file mode 100644
index 0000000000..0d38df37b2
--- /dev/null
+++ b/testing/web-platform/tests/dom/nodes/Node-childNodes.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Node.childNodes</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=author title="Tim Taubert" href="mailto:ttaubert@mozilla.com">
+<link rel=author title="Ms2ger" href="mailto:Ms2ger@gmail.com">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<div style="display: none">
+  <ul id='test'><li>1</li><li>2</li><li>3</li><li>4</li></ul>
+</div>
+<script>
+test(function() {
+  var element = document.createElement("p");
+  assert_equals(element.childNodes, element.childNodes);
+}, "Caching of Node.childNodes");
+
+var check_parent_node = function(node) {
+  assert_array_equals(node.childNodes, []);
+
+  var children = node.childNodes;
+  var child = document.createElement("p");
+  node.appendChild(child);
+  assert_equals(node.childNodes, children);
+  assert_array_equals(children, [child]);
+  assert_equals(children.item(0), child);
+
+  var child2 = document.createComment("comment");
+  node.appendChild(child2);
+  assert_array_equals(children, [child, child2]);
+  assert_equals(children.item(0), child);
+  assert_equals(children.item(1), child2);
+
+  assert_false(2 in children);
+  assert_equals(children[2], undefined);
+  assert_equals(children.item(2), null);
+};
+
+test(function() {
+  check_parent_node(document.createElement("p"));
+}, "Node.childNodes on an Element.");
+
+test(function() {
+  check_parent_node(document.createDocumentFragment());
+}, "Node.childNodes on a DocumentFragment.");
+
+test(function() {
+  check_parent_node(new Document());
+}, "Node.childNodes on a Document.");
+
+test(function() {
+  var node = document.createElement("div");
+  var kid1 = document.createElement("p");
+  var kid2 = document.createTextNode("hey");
+  var kid3 = document.createElement("span");
+  node.appendChild(kid1);
+  node.appendChild(kid2);
+  node.appendChild(kid3);
+
+  var list = node.childNodes;
+  assert_array_equals([...list], [kid1, kid2, kid3]);
+
+  var keys = list.keys();
+  assert_false(keys instanceof Array);
+  keys = [...keys];
+  assert_array_equals(keys, [0, 1, 2]);
+
+  var values = list.values();
+  assert_false(values instanceof Array);
+  values = [...values];
+  assert_array_equals(values, [kid1, kid2, kid3]);
+
+  var entries = list.entries();
+  assert_false(entries instanceof Array);
+  entries = [...entries];
+  assert_equals(entries.length, keys.length);
+  assert_equals(entries.length, values.length);
+  for (var i = 0; i < entries.length; ++i) {
+    assert_array_equals(entries[i], [keys[i], values[i]]);
+  }
+
+  var cur = 0;
+  var thisObj = {};
+  list.forEach(function(value, key, listObj) {
+    assert_equals(listObj, list);
+    assert_equals(this, thisObj);
+    assert_equals(value, values[cur]);
+    assert_equals(key, keys[cur]);
+    cur++;
+  }, thisObj);
+  assert_equals(cur, entries.length);
+
+  assert_equals(list[Symbol.iterator], Array.prototype[Symbol.iterator]);
+  assert_equals(list.keys, Array.prototype.keys);
+  if (Array.prototype.values) {
+    assert_equals(list.values, Array.prototype.values);
+  }
+  assert_equals(list.entries, Array.prototype.entries);
+  assert_equals(list.forEach, Array.prototype.forEach);
+}, "Iterator behavior of Node.childNodes");
+
+
+test(() => {
+  var node = document.getElementById("test");
+  var children = node.childNodes;
+  assert_true(children instanceof NodeList);
+  var li = document.createElement("li");
+  assert_equals(children.length, 4);
+
+  node.appendChild(li);
+  assert_equals(children.length, 5);
+
+  node.removeChild(li);
+  assert_equals(children.length, 4);
+}, "Node.childNodes should be a live collection");
+</script>