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Issue 16865007: Make createNodeIterator() and createTreeWalker() accept default arguments. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Use type tags in tests. Created 7 years, 6 months ago
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1 <!DOCTYPE html>
2 <html>
3 <head>
4 <title>NodeIterator: 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 NodeIterator.</p>
11 <script>
12 function createSampleDOM()
13 {
14 // Tree order: #a -> "b" -> #c -> #d -> "e" -> #f -> "g" -> <!--h--> -> "i" -> <!--j-->.
15 var div = document.createElement('div');
16 div.id = 'a';
17 div.innerHTML = 'b<div id="c"><div id="d">e<span id="f">g<!--h--></span>i</d iv><!--j--></div>';
18 return div;
19 }
20
21 test(function ()
22 {
23 var root = createSampleDOM();
24 var iterator = document.createNodeIterator(root);
25 assert_equals(iterator.toString(), '[object NodeIterator]');
26 assert_equals(iterator.root, root);
27 assert_equals(iterator.referenceNode, root);
28 assert_equals(iterator.pointerBeforeReferenceNode, true);
29 assert_equals(iterator.whatToShow, 0xFFFFFFFF);
30 assert_equals(iterator.filter, null);
31 assert_readonly(iterator, 'root');
32 assert_readonly(iterator, 'referenceNode');
33 assert_readonly(iterator, 'pointerBeforeReferenceNode');
34 assert_readonly(iterator, 'whatToShow');
35 assert_readonly(iterator, 'filter');
36 assert_idl_attribute(iterator, 'nextNode');
37 assert_idl_attribute(iterator, 'previousNode');
38 assert_idl_attribute(iterator, 'detach');
39 }, 'Construct a NodeIterator by document.createNodeIterator().');
40
41 test(function ()
42 {
43 assert_throws(new TypeError(), function () { document.createNodeIterator(); });
44 assert_throws('NOT_SUPPORTED_ERR', function () { document.createNodeIterator (null); });
45 assert_throws('NOT_SUPPORTED_ERR', function () { document.createNodeIterator (undefined); });
46 assert_throws('NOT_SUPPORTED_ERR', function () { document.createNodeIterator (new Object()); });
47 assert_throws('NOT_SUPPORTED_ERR', function () { document.createNodeIterator (1); });
48 }, 'Give an invalid root node to document.createNodeIterator().');
49
50 // |expected| should be an object indicating the expected type of node.
51 function assert_node(actual, expected)
52 {
53 assert_true(actual instanceof expected.type,
54 'Node type mismatch: actual = ' + actual.nodeType + ', expected = ' + expected.nodeType);
55 if (typeof(expected.id) !== 'undefined')
56 assert_equals(actual.id, expected.id);
57 if (typeof(expected.nodeValue) !== 'undefined')
58 assert_equals(actual.nodeValue, expected.nodeValue);
59 }
60
61 // |expectedNodes| should be an array of objects that can be passed to |assert_n ode|.
62 function testIteratorForwardAndBackward(iterator, expectedNodes)
63 {
64 assert_equals(iterator.referenceNode, iterator.root);
65 assert_equals(iterator.pointerBeforeReferenceNode, true);
66
67 // Going forward.
68 var index = 0;
69 var node;
70 while (node = iterator.nextNode()) {
71 assert_node(node, expectedNodes[index]);
72 assert_node(iterator.referenceNode, expectedNodes[index]);
73 assert_equals(iterator.pointerBeforeReferenceNode, false);
74 ++index;
75 }
76
77 assert_equals(index, expectedNodes.length);
78 assert_equals(node, null);
79 assert_node(iterator.referenceNode, expectedNodes[expectedNodes.length - 1]) ;
80 assert_equals(iterator.pointerBeforeReferenceNode, false);
81
82 // Going backward.
83 --index;
84 while (node = iterator.previousNode()) {
85 assert_node(node, expectedNodes[index]);
86 assert_node(iterator.referenceNode, expectedNodes[index]);
87 assert_equals(iterator.pointerBeforeReferenceNode, true);
88 --index;
89 }
90
91 assert_equals(index, -1);
92 assert_equals(node, null);
93 assert_node(iterator.referenceNode, expectedNodes[0]);
94 assert_equals(iterator.pointerBeforeReferenceNode, true);
95 }
96
97 test(function ()
98 {
99 var expected = [
100 { type: Element, id: 'a' },
101 { type: Text, nodeValue: 'b' },
102 { type: Element, id: 'c' },
103 { type: Element, id: 'd' },
104 { type: Text, nodeValue: 'e' },
105 { type: Element, id: 'f' },
106 { type: Text, nodeValue: 'g' },
107 { type: Comment, nodeValue: 'h' },
108 { type: Text, nodeValue: 'i' },
109 { type: Comment, nodeValue: 'j' },
110 ];
111 var iterator = document.createNodeIterator(createSampleDOM());
112 testIteratorForwardAndBackward(iterator, expected);
113 }, 'Iterate over all nodes forward then backward.');
114
115 test(function ()
116 {
117 var expected = [
118 { type: Element, id: 'a' },
119 { type: Element, id: 'c' },
120 { type: Element, id: 'd' },
121 { type: Element, id: 'f' },
122 ];
123 var iterator = document.createNodeIterator(createSampleDOM(), NodeFilter.SHO W_ELEMENT);
124 testIteratorForwardAndBackward(iterator, expected);
125 }, 'Iterate over all elements forward then backward.');
126
127 test(function ()
128 {
129 var expected = [
130 { type: Text, nodeValue: 'b' },
131 { type: Text, nodeValue: 'e' },
132 { type: Text, nodeValue: 'g' },
133 { type: Text, nodeValue: 'i' },
134 ];
135 var iterator = document.createNodeIterator(createSampleDOM(), NodeFilter.SHO W_TEXT);
136 testIteratorForwardAndBackward(iterator, expected);
137 }, 'Iterate over all text nodes forward then backward.');
138
139 test(function ()
140 {
141 var expected = [
142 { type: Comment, nodeValue: 'h' },
143 { type: Comment, nodeValue: 'j' },
144 ];
145 var iterator = document.createNodeIterator(createSampleDOM(), NodeFilter.SHO W_COMMENT);
146 testIteratorForwardAndBackward(iterator, expected);
147 }, 'Iterate over all comment nodes forward then backward.');
148
149 test(function ()
150 {
151 var iterator = document.createNodeIterator(createSampleDOM(), 0);
152 assert_equals(iterator.referenceNode, iterator.root);
153 assert_equals(iterator.pointerBeforeReferenceNode, true);
154
155 assert_equals(iterator.nextNode(), null);
156 assert_equals(iterator.referenceNode, iterator.root);
157 assert_equals(iterator.pointerBeforeReferenceNode, true);
158
159 assert_equals(iterator.previousNode(), null);
160 assert_equals(iterator.referenceNode, iterator.root);
161 assert_equals(iterator.pointerBeforeReferenceNode, true);
162 }, 'Test the behavior of NodeIterator when no nodes match with the given filter. ');
163
164 test(function ()
165 {
166 var expected = [
167 { type: Text, nodeValue: 'e' },
168 { type: Element, id: 'f' },
169 { type: Comment, nodeValue: 'j' },
170 ];
171 var filter = function (node) {
172 if (node.nodeType === Node.ELEMENT_NODE && node.id === 'f' ||
173 node.nodeType === Node.TEXT_NODE && node.nodeValue === 'e' ||
174 node.nodeType === Node.COMMENT_NODE && node.nodeValue === 'j') {
175 return NodeFilter.FILTER_ACCEPT;
176 }
177 return NodeFilter.FILTER_REJECT;
178 };
179 var iterator = document.createNodeIterator(createSampleDOM(), NodeFilter.SHO W_ALL, filter);
180 testIteratorForwardAndBackward(iterator, expected);
181 }, 'Test the behavior of NodeIterator when NodeFilter is specified.');
182 </script>
183 </body>
184 </html>
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