| <!doctype html> |
| <meta charset=utf-8> |
| <title>Document.createTreeWalker</title> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <div id=log></div> |
| <script> |
| test(function() { |
| assert_throws(new TypeError(), function() { |
| document.createTreeWalker(); |
| }); |
| }, "Required arguments to createTreeWalker should be required."); |
| test(function() { |
| var tw = document.createTreeWalker(document.body); |
| assert_equals(tw.root, document.body); |
| assert_equals(tw.currentNode, document.body); |
| assert_equals(tw.whatToShow, 0xFFFFFFFF); |
| assert_equals(tw.filter, null); |
| }, "Optional arguments to createTreeWalker should be optional (1 passed)."); |
| test(function() { |
| var tw = document.createTreeWalker(document.body, 42); |
| assert_equals(tw.root, document.body); |
| assert_equals(tw.currentNode, document.body); |
| assert_equals(tw.whatToShow, 42); |
| assert_equals(tw.filter, null); |
| }, "Optional arguments to createTreeWalker should be optional (2 passed)."); |
| test(function() { |
| var tw = document.createTreeWalker(document.body, 42, null); |
| assert_equals(tw.root, document.body); |
| assert_equals(tw.currentNode, document.body); |
| assert_equals(tw.whatToShow, 42); |
| assert_equals(tw.filter, null); |
| }, "Optional arguments to createTreeWalker should be optional (3 passed, null)."); |
| test(function() { |
| var fn = function() {}; |
| var tw = document.createTreeWalker(document.body, 42, fn); |
| assert_equals(tw.root, document.body); |
| assert_equals(tw.currentNode, document.body); |
| assert_equals(tw.whatToShow, 42); |
| assert_equals(tw.filter, fn); |
| }, "Optional arguments to createTreeWalker should be optional (3 passed, function)."); |
| </script> |
