<!DOCTYPE html>
<meta charset="utf-8">
<head>
<title>Node.prototype.isConnected</title>
<link rel=help href="https://dom.spec.whatwg.org/#dom-node-isconnected">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
"use strict";
test(function() {
var nodes = [document.createElement("div"),
document.createElement("div"),
document.createElement("div")];
checkNodes([], nodes);
// Append nodes[0].
document.body.appendChild(nodes[0]);
checkNodes([nodes[0]],
[nodes[1], nodes[2]]);
// Append nodes[1] and nodes[2] together.
nodes[1].appendChild(nodes[2]);
checkNodes([nodes[0]],
[nodes[1], nodes[2]]);
nodes[0].appendChild(nodes[1]);
checkNodes(nodes, []);
// Remove nodes[2].
nodes[2].remove();
checkNodes([nodes[0], nodes[1]],
[nodes[2]]);
// Remove nodes[0] and nodes[1] together.
nodes[0].remove();
checkNodes([], nodes);
}, "Test with ordinary child nodes");
test(function() {
var nodes = [document.createElement("iframe"),
document.createElement("iframe"),
document.createElement("iframe"),
document.createElement("iframe"),
document.createElement("div")];
var frames = [nodes[0],
nodes[1],
nodes[2],
nodes[3]];
checkNodes([], nodes);
// Since we cannot append anything to the contentWindow of an iframe before it
// is appended to the main DOM tree, we append the iframes one after another.
document.body.appendChild(nodes[0]);
checkNodes([nodes[0]],
[nodes[1], nodes[2], nodes[3], nodes[4]]);
frames[0].contentDocument.body.appendChild(nodes[1]);
checkNodes([nodes[0], nodes[1]],
[nodes[2], nodes[3], nodes[4]]);
frames[1].contentDocument.body.appendChild(nodes[2]);
checkNodes([nodes[0], nodes[1], nodes[2]],
[nodes[3], nodes[4]]);
frames[2].contentDocument.body.appendChild(nodes[3]);
checkNodes([nodes[0], nodes[1], nodes[2], nodes[3]],
[nodes[4]]);
frames[3].contentDocument.body.appendChild(nodes[4]);
checkNodes(nodes, []);
frames[3].remove();
// Since node[4] is still under the doument of frame[3], it's still connected.
checkNodes([nodes[0], nodes[1], nodes[2], nodes[4]],
[nodes[3]]);
frames[0].remove();
// Since node[1] and node[2] are still under the doument of frame[0], they are
// still connected.
checkNodes([nodes[1], nodes[2], nodes[4]],
[nodes[0], nodes[3]]);
}, "Test with iframes");
// This helper function is used to check whether nodes should be connected.
function checkNodes(aConnectedNodes, aDisconnectedNodes) {
aConnectedNodes.forEach(node => assert_true(node.isConnected));
aDisconnectedNodes.forEach(node => assert_false(node.isConnected));
}
</script>
</body>