<!DOCTYPE html>
<html>
<!--
Test adapted from https://mxr.mozilla.org/chromium/source/src/third_party/WebKit/LayoutTests/fast/dom/TreeWalker/script-tests/acceptNode-filter.js
-->
<head>
<title>TreeWalker: acceptNode-filter</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="traversal-support.js"></script>
<link rel="stylesheet" href="/resources/testharness.css">
<div id=log></div>
</head>
<body>
<p>Test JS objects as NodeFilters</p>
<script>
var testElement;
setup(function() {
testElement = document.createElement("div");
testElement.id = 'root';
//testElement.innerHTML='<div id="A1"><div id="B1"></div><div id="B2"></div></div>';
// XXX for Servo, build the tree without using innerHTML
var a1 = document.createElement("div");
a1.id = "A1";
var b1 = document.createElement("div");
b1.id = "B1";
var b2 = document.createElement("div");
b2.id = "B2";
testElement.appendChild(a1);
a1.appendChild(b1);
a1.appendChild(b2);
});
test(function()
{
function filter(node)
{
if (node.id == "B1")
return NodeFilter.FILTER_SKIP;
return NodeFilter.FILTER_ACCEPT;
}
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter);
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
assert_node(walker.currentNode, { type: Element, id: 'A1' });
assert_node(walker.nextNode(), { type: Element, id: 'B2' });
assert_node(walker.currentNode, { type: Element, id: 'B2' });
}, 'Testing with raw function filter');
test(function()
{
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, {
acceptNode : function(node) {
if (node.id == "B1")
return NodeFilter.FILTER_SKIP;
return NodeFilter.FILTER_ACCEPT;
}
});
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
assert_node(walker.currentNode, { type: Element, id: 'A1' });
assert_node(walker.nextNode(), { type: Element, id: 'B2' });
assert_node(walker.currentNode, { type: Element, id: 'B2' });
}, 'Testing with object filter');
test(function()
{
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, null);
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
assert_node(walker.currentNode, { type: Element, id: 'A1' });
assert_node(walker.nextNode(), { type: Element, id: 'B1' });
assert_node(walker.currentNode, { type: Element, id: 'B1' });
}, 'Testing with null filter');
test(function()
{
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, undefined);
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
assert_node(walker.currentNode, { type: Element, id: 'A1' });
assert_node(walker.nextNode(), { type: Element, id: 'B1' });
assert_node(walker.currentNode, { type: Element, id: 'B1' });
}, 'Testing with undefined filter');
test(function()
{
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, {});
assert_throws(new TypeError(), function () { walker.firstChild(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_throws(new TypeError(), function () { walker.nextNode(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
}, 'Testing with object lacking acceptNode property');
test(function()
{
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, { acceptNode: "foo" });
assert_throws(new TypeError(), function () { walker.firstChild(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_throws(new TypeError(), function () { walker.nextNode(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
}, 'Testing with object with non-function acceptNode property');
test(function()
{
var filter = function() { return NodeFilter.FILTER_ACCEPT; };
filter.acceptNode = function(node) { return NodeFilter.FILTER_SKIP; };
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter);
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
assert_node(walker.nextNode(), { type: Element, id: 'B1' });
}, 'Testing with function having acceptNode function');
test(function()
{
var filter = {
acceptNode: function(node) {
return NodeFilter.FILTER_ACCEPT;
}
};
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter);
assert_node(walker.firstChild(), { type: Element, id: 'A1' });
}, 'Testing acceptNode callee');
test(function()
{
var test_error = { name: "test" };
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT,
function(node) {
throw test_error;
});
assert_throws(test_error, function () { walker.firstChild(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_throws(test_error, function () { walker.nextNode(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
}, 'Testing with filter function that throws');
test(function()
{
var test_error = { name: "test" };
var walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT,
{
acceptNode : function(node) {
throw test_error;
}
});
assert_throws(test_error, function () { walker.firstChild(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
assert_throws(test_error, function () { walker.nextNode(); });
assert_node(walker.currentNode, { type: Element, id: 'root' });
}, 'Testing with filter object that throws');
</script>
</body>
</html>