1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245 | 1x
1x
1x
1x
1x
1x
23x
23x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
6x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
3x
1x
1x
1x
1x
1x
1x
1x
3x
1x
1x
1x
1x
1x
1x
3x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
3x
1x
1x
1x
1x
1x
1x
2x
1x
1x
1x
1x
1x
1x
1x
3x
1x
| import { DOMNode, DOMTree } from 'dom';
import { Parser } from '../parser';
import { Config } from '../config';
describe('DOMNode', function(){
const expect = require('chai').expect;
let root: DOMTree;
beforeEach(() => {
const parser = new Parser(Config.empty());
root = parser.parseHtml(`<div id="parent">
<ul>
<li class="foo">foo</li>
<li class="bar baz" id="spam" title="ham">bar</li>
</ul>
<p class="bar">spam</p>
<span class="baz">flux</span>
</div>`);
});
it('id property should return element id', function(){
const el = new DOMNode('foo');
el.setAttribute('id', 'bar');
expect(el.id).to.equal('bar');
});
describe('is()', function(){
it('should match tagname', function(){
const el = new DOMNode('foo');
expect(el.is('foo')).to.be.true;
expect(el.is('bar')).to.be.false;
});
it('should match any tag when using asterisk', function(){
const el = new DOMNode('foo');
expect(el.is('*')).to.be.true;
});
});
describe('getElementsByTagName()', function(){
it('should find elements', function(){
const nodes = root.getElementsByTagName('li');
expect(nodes).to.have.lengthOf(2);
expect(nodes[0].getAttribute('class')).to.equal('foo');
expect(nodes[1].getAttribute('class')).to.equal('bar baz');
});
it('should support universal selector', function(){
const tagNames = root.getElementsByTagName('*').map((cur: DOMNode) => cur.tagName);
expect(tagNames).to.have.lengthOf(6);
expect(tagNames).to.deep.equal(['div', 'ul', 'li', 'li', 'p', 'span']);
});
});
describe('querySelector()', () => {
it('should find element by tagname', () => {
const el = root.querySelector('ul');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('ul');
});
it('should find element by #id', () => {
const el = root.querySelector('#parent');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('div');
expect(el.getAttribute('id')).to.equal('parent');
});
it('should find element by .class', () => {
const el = root.querySelector('.foo');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('foo');
});
it('should find element by [attr]', () => {
const el = root.querySelector('[title]');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('bar baz');
});
it('should find element by [attr=".."]', () => {
const el = root.querySelector('[class="foo"]');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('foo');
});
it('should find element by multiple selectors', () => {
const el = root.querySelector('.bar.baz#spam');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('bar baz');
});
it('should find element with descendant combinator', () => {
const el = root.querySelector('ul .bar');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('bar baz');
});
it('should find element with child combinator', () => {
const el = root.querySelector('div > .bar');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('p');
expect(el.getAttribute('class')).to.equal('bar');
});
it('should find element with adjacent sibling combinator', () => {
const el = root.querySelector('li + li');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('li');
expect(el.getAttribute('class')).to.equal('bar baz');
});
it('should find element with general sibling combinator', () => {
const el = root.querySelector('ul ~ .baz');
expect(el).to.be.an.instanceof(DOMNode);
expect(el.tagName).to.equal('span');
expect(el.getAttribute('class')).to.equal('baz');
});
});
describe('querySelectorAll()', () => {
it('should find multiple elements', () => {
const el = root.querySelectorAll('.bar');
expect(el).to.have.lengthOf(2);
expect(el[0]).to.be.an.instanceof(DOMNode);
expect(el[1]).to.be.an.instanceof(DOMNode);
expect(el[0].tagName).to.equal('li');
expect(el[1].tagName).to.equal('p');
});
});
describe('visitDepthFirst()', function(){
it('should visit all nodes in correct order', function(){
const root = DOMNode.rootNode();
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const order: string[] = [];
root.visitDepthFirst((node: DOMNode) => order.push(node.tagName));
expect(order).to.deep.equal(['a', 'c', 'b']);
});
});
describe('someChildren()', function(){
it('should return true if any child node evaluates to true', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const result = root.someChildren((node: DOMNode) => node.tagName === 'c');
expect(result).to.be.true;
});
it('should return false if no child node evaluates to true', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const result = root.someChildren(() => false);
expect(result).to.be.false;
});
it('should short-circuit when first node evalutes to true', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const order: string[] = [];
root.someChildren((node: DOMNode) => {
order.push(node.tagName);
return node.tagName === 'a';
});
expect(order).to.deep.equal(['a']);
});
});
describe('everyChildren()', function(){
it('should return true if all nodes evaluates to true', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const result = root.everyChildren(() => true);
expect(result).to.be.true;
});
it('should return false if any nodes evaluates to false', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const result = root.everyChildren((node: DOMNode) => node.tagName !== 'b');
expect(result).to.be.false;
});
});
describe('find()', function(){
it('should visit all nodes until callback evaluates to true', function(){
const root = new DOMNode('root');
/* eslint-disable no-unused-vars */
const a = new DOMNode('a', root);
const b = new DOMNode('b', root);
const c = new DOMNode('c', b);
/* eslint-enable no-unused-vars */
const result = root.find((node: DOMNode) => node.tagName === 'b');
expect(result.tagName).to.equal('b');
});
});
});
|