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| 1 <!DOCTYPE html> |
| 2 <html> |
| 3 <head> |
| 4 <title>TreeWalker: Basic test</title> |
| 5 <script src="../../../resources/testharness.js"></script> |
| 6 <script src="../../../resources/testharnessreport.js"></script> |
| 7 <link rel="stylesheet" href="../../../resources/testharness.css"> |
| 8 </head> |
| 9 <body> |
| 10 <p>This test checks the basic functionality of TreeWalker.</p> |
| 11 <script> |
| 12 function createSampleDOM() |
| 13 { |
| 14 // Tree structure: |
| 15 // #a |
| 16 // | |
| 17 // +----+----+ |
| 18 // | | |
| 19 // "b" #c |
| 20 // | |
| 21 // +----+----+ |
| 22 // | | |
| 23 // #d <!--j--> |
| 24 // | |
| 25 // +----+----+ |
| 26 // | | | |
| 27 // "e" #f "i" |
| 28 // | |
| 29 // +--+--+ |
| 30 // | | |
| 31 // "g" <!--h--> |
| 32 var div = document.createElement('div'); |
| 33 div.id = 'a'; |
| 34 div.innerHTML = 'b<div id="c"><div id="d">e<span id="f">g<!--h--></span>i</d
iv><!--j--></div>'; |
| 35 return div; |
| 36 } |
| 37 |
| 38 test(function () |
| 39 { |
| 40 var root = createSampleDOM(); |
| 41 var walker = document.createTreeWalker(root); |
| 42 assert_equals(walker.toString(), '[object TreeWalker]'); |
| 43 assert_equals(walker.root, root); |
| 44 assert_equals(walker.whatToShow, 0xFFFFFFFF); |
| 45 assert_equals(walker.filter, null); |
| 46 assert_equals(walker.currentNode, root); |
| 47 assert_readonly(walker, 'root'); |
| 48 assert_readonly(walker, 'whatToShow'); |
| 49 assert_readonly(walker, 'filter'); |
| 50 assert_idl_attribute(walker, 'parentNode'); |
| 51 assert_idl_attribute(walker, 'firstChild'); |
| 52 assert_idl_attribute(walker, 'lastChild'); |
| 53 assert_idl_attribute(walker, 'previousSibling'); |
| 54 assert_idl_attribute(walker, 'nextSibling'); |
| 55 assert_idl_attribute(walker, 'previousNode'); |
| 56 assert_idl_attribute(walker, 'nextNode'); |
| 57 }, 'Construct a TreeWalker by document.createTreeWalker().'); |
| 58 |
| 59 test(function () |
| 60 { |
| 61 assert_throws(new TypeError(), function () { document.createTreeWalker(); })
; |
| 62 assert_throws('NOT_SUPPORTED_ERR', function () { document.createTreeWalker(n
ull); }); |
| 63 assert_throws('NOT_SUPPORTED_ERR', function () { document.createTreeWalker(u
ndefined); }); |
| 64 assert_throws('NOT_SUPPORTED_ERR', function () { document.createTreeWalker(n
ew Object()); }); |
| 65 assert_throws('NOT_SUPPORTED_ERR', function () { document.createTreeWalker(1
); }); |
| 66 }, 'Give an invalid root node to document.createTreeWalker().'); |
| 67 |
| 68 // |expected| should be an object indicating the expected type of node. |
| 69 function assert_node(actual, expected) |
| 70 { |
| 71 assert_true(actual instanceof expected.type, |
| 72 'Node type mismatch: actual = ' + actual.nodeType + ', expected
= ' + expected.nodeType); |
| 73 if (typeof(expected.id) !== 'undefined') |
| 74 assert_equals(actual.id, expected.id); |
| 75 if (typeof(expected.nodeValue) !== 'undefined') |
| 76 assert_equals(actual.nodeValue, expected.nodeValue); |
| 77 } |
| 78 |
| 79 test(function () |
| 80 { |
| 81 var root = createSampleDOM(); |
| 82 var walker = document.createTreeWalker(root); |
| 83 var f = root.lastChild.firstChild.childNodes[1]; // An element node: div#f. |
| 84 var body = document.body; // An element outside |root|. |
| 85 |
| 86 assert_node(walker.currentNode, { type: Element, id: 'a' }); |
| 87 assert_equals(walker.parentNode(), null); |
| 88 assert_node(walker.currentNode, { type: Element, id: 'a' }); |
| 89 assert_node(walker.firstChild(), { type: Text, nodeValue: 'b' }); |
| 90 assert_node(walker.currentNode, { type: Text, nodeValue: 'b' }); |
| 91 assert_node(walker.nextSibling(), { type: Element, id: 'c' }); |
| 92 assert_node(walker.currentNode, { type: Element, id: 'c' }); |
| 93 assert_node(walker.lastChild(), { type: Comment, nodeValue: 'j' }); |
| 94 assert_node(walker.currentNode, { type: Comment, nodeValue: 'j' }); |
| 95 assert_node(walker.previousSibling(), { type: Element, id: 'd' }); |
| 96 assert_node(walker.currentNode, { type: Element, id: 'd' }); |
| 97 assert_node(walker.nextNode(), { type: Text, nodeValue: 'e' }); |
| 98 assert_node(walker.currentNode, { type: Text, nodeValue: 'e' }); |
| 99 assert_node(walker.parentNode(), { type: Element, id: 'd' }); |
| 100 assert_node(walker.currentNode, { type: Element, id: 'd' }); |
| 101 assert_node(walker.previousNode(), { type: Element, id: 'c' }); |
| 102 assert_node(walker.currentNode, { type: Element, id: 'c' }); |
| 103 assert_equals(walker.nextSibling(), null); |
| 104 assert_node(walker.currentNode, { type: Element, id: 'c' }); |
| 105 walker.currentNode = f; |
| 106 assert_equals(walker.currentNode, f); |
| 107 }, 'Walk over nodes.'); |
| 108 |
| 109 // FIXME: Add tests that use |whatToShow| argument and/or |filter| argument. |
| 110 </script> |
| 111 </body> |
| 112 </html> |
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