ff30843eb381a193ae1c1e228de84e9f902c6210
[fnpeditor.git] / modules / documentCanvas / canvas / canvas.test3.js
1 define([
2 'libs/chai',
3 'libs/sinon',
4 'modules/documentCanvas/canvas/canvas',
5 'modules/documentCanvas/canvas/documentElement',
6 'modules/documentCanvas/canvas/utils'
7 ], function(chai, sinon, canvas, documentElement, utils) {
8     
9 'use strict';
10
11 var expect = chai.expect;
12
13
14 describe('Canvas', function() {
15
16     describe('Internal HTML representation of a DocumentNodeElement', function() {
17         it('is always a div tag', function() {
18             ['section', 'header', 'span', 'aside', 'figure'].forEach(function(tagName) {
19                 var dom = canvas.fromXML('<' + tagName + '></' + tagName + '>').doc().dom();
20                 expect(dom.prop('tagName')).to.equal('DIV', tagName + ' is represented as div');
21             });
22         });
23         it('has wlxml tag put into wlxml-tag attribute of its internal container', function() {
24             var dom = canvas.fromXML('<section></section>').doc().dom();
25             expect(dom.children('[document-element-content]').attr('wlxml-tag')).to.equal('section');
26         });
27         it('has wlxml class put into wlxml-class attribute of its internal containr, dots replaced with dashes', function() {
28             var dom = canvas.fromXML('<section class="some.class"></section>').doc().dom();
29             expect(dom.children('[document-element-content]').attr('wlxml-class')).to.equal('some-class');
30         });
31     });
32
33     describe('Internal HTML representation of a DocumentTextElement', function() {
34         it('is text node wrapped in a div with document-text-element attribute set', function() {
35             var dom = canvas.fromXML('<section>Alice</section>').doc().children()[0].dom();
36             expect(dom.prop('tagName')).to.equal('DIV');
37             expect(dom.attr('document-text-element')).to.equal('');
38             expect(dom.contents().length).to.equal(1);
39             expect(dom.contents()[0].nodeType).to.equal(Node.TEXT_NODE);
40             expect($(dom.contents()[0]).text()).to.equal('Alice');
41         });
42     });
43
44     describe('basic properties', function() {
45         it('renders empty document when canvas created from empty XML', function() {
46             var c = canvas.fromXML('');
47             expect(c.doc()).to.equal(null);
48         });
49
50         it('gives access to its document root node', function() {
51             var c = canvas.fromXML('<section></section>');
52             expect(c.doc().getWlxmlTag()).to.equal('section');
53         });
54
55         describe('root element', function() {
56             it('has no parent', function() {
57                 var c = canvas.fromXML('<section></section>');
58                 expect(c.doc().parent()).to.be.null;
59             });
60         });
61
62         describe('DocumentTextElement', function() {
63             it('can have its content set', function() {
64                 var c = canvas.fromXML('<section>Alice</section>'),
65                     root = c.doc(),
66                     text = root.children()[0];
67                 
68                 text.setText('a cat');
69                 expect(root.children()[0].getText()).to.equal('a cat');
70             });
71         });
72
73         describe('DocumentNodeElement', function() {
74             it('knows index of its child', function() {
75                 var c = canvas.fromXML('<section><div></div><header></header><span></span></section>'),
76                     root = c.doc(),
77                     child = root.children()[1];
78                 expect(root.childIndex(child)).to.equal(1);
79             });
80
81             it('knows WLXML tag it renders', function(){
82                 var c = canvas.fromXML('<section></section>'),
83                     section = c.doc();
84                 expect(section.getWlxmlTag()).to.equal('section', 'initial tag is section');
85                 section.setWlxmlTag('header');
86                 expect(section.getWlxmlTag()).to.equal('header', 'tag is changed to header');
87             });
88
89             it('knows WLXML class of a WLXML tag it renders', function(){
90                 var c = canvas.fromXML('<section class="some.class.A"></section>'),
91                     section = c.doc();
92                 expect(section.getWlxmlClass()).to.equal('some.class.A');
93                 section.setWlxmlClass('some.class.B');
94                 expect(section.getWlxmlClass()).to.equal('some.class.B');
95                 section.setWlxmlClass(null);
96                 expect(section.getWlxmlClass()).to.be.undefined;
97             });
98
99
100
101             describe('element has meta attributes', function() {
102                 it('can change its meta attributes', function() {
103                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
104                     span = c.doc().children()[0];
105                     
106                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
107                     span.setWlxmlMetaAttr('uri', 'otheruri');
108                     expect(span.getWlxmlMetaAttr('uri')).to.equal('otheruri');
109                 });
110
111                 it('changes its meta attributes with class change', function() {
112                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
113                     span = c.doc().children()[0];
114                     
115                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
116                     span.setWlxmlClass('author');
117                     expect(span.getWlxmlMetaAttr('uri')).to.be.undefined;
118                 });
119
120                 it('keeps meta attribute value on class change if a new class has this attribute', function() {
121                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
122                     span = c.doc().children()[0];
123                     span.setWlxmlClass('uri.some.subclass');
124                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
125                 });
126             });
127         });
128
129         it('returns DocumentNodeElement instance from HTMLElement', function() {
130             var c = canvas.fromXML('<section></section>'),
131                 htmlElement = c.doc().dom().get(0),
132                 element = c.getDocumentElement(htmlElement);
133             expect(element).to.be.instanceOf(documentElement.DocumentNodeElement);
134             expect(element.sameNode(c.doc()));
135         });
136         
137         it('returns DocumentTextElement instance from Text Node', function() {
138             var c = canvas.fromXML('<section>Alice</section>'),
139                 aliceElement = c.doc().children()[0],
140                 textNode = aliceElement.dom().contents()[0],
141                 element = c.getDocumentElement(textNode);
142
143             expect(textNode.nodeType).to.equal(Node.TEXT_NODE, 'text node selected');
144             expect($(textNode).text()).to.equal('Alice');
145
146             expect(element).to.be.instanceOf(documentElement.DocumentTextElement);
147             expect(element.sameNode(c.doc().children()[0]));
148         });
149     });
150
151
152
153     describe('document representation api', function() {
154         describe('document root element', function() {
155             var c = canvas.fromXML('<section></section>');
156             it('exists', function() {
157                 expect(c.doc()).to.be.instanceOf(documentElement.DocumentElement);
158             });
159             it('is of type DocumentNodeElement', function() {
160                 expect(c.doc()).to.be.instanceOf(documentElement.DocumentNodeElement);
161             });
162         });
163
164         describe('DocumentElements comparison', function() {
165             it('reports dwo DocumentElements to be the same when they represent the same wlxml document element', function() {
166                 var c = canvas.fromXML('<section><div></div><div></div></section>'),
167                     first_div1 = c.doc().children()[0],
168                     first_div2 = c.doc().children()[0],
169                     second_div = c.doc().children()[1];
170                 expect(first_div1.sameNode(first_div1)).to.be.true;
171                 expect(first_div1.sameNode(first_div2)).to.be.true;
172                 expect(first_div1.sameNode(second_div)).to.be.false;
173             });
174         });
175
176         describe('traversing', function() {
177             it('reports element nodes', function() {
178                 var c = canvas.fromXML('<section><div></div></section>'),
179                     children = c.doc().children();
180                 expect(children.length).to.equal(1);
181                 expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
182
183                 c = canvas.fromXML('<section><div></div><div></div></section>'),
184                     children = c.doc().children();
185                 expect(children.length).to.equal(2);
186                 expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
187                 expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
188             });
189             
190             it('reports text nodes', function() {
191                 var c = canvas.fromXML('<section>Alice</section>'),
192                     children = c.doc().children();
193                 expect(children.length).to.equal(1);
194                 expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
195             });
196
197             describe('accessing parents', function() {
198                 it('returns DocumentNodeElement representing parent in wlxml document as DocumentNodeElement parent', function() {
199                     var c = canvas.fromXML('<section><div></div></section>'),
200                         div = c.doc().children()[0];
201                     expect(div.parent().sameNode(c.doc())).to.be.true;
202                 });
203                 it('returns DocumentNodeElement representing parent in wlxml document as DocumentTextElement parent', function() {
204                     var c = canvas.fromXML('<section>Alice</section>'),
205                         text = c.doc().children()[0];
206                     expect(text.parent().sameNode(c.doc())).to.be.true;
207                 });
208             });
209
210             describe('accessing sibling parents of two elements', function() {
211                 it('returns elements themself if they have direct common parent', function() {
212                     var c = canvas.fromXML('<section>\
213                         <div>\
214                             <div>A</div>\
215                             <div>B</div>\
216                         </div>\
217                     </section>'),
218                         section = c.doc(),
219                         wrappingDiv = c.doc().children()[0],
220                         divA = wrappingDiv.children()[0],
221                         divB = wrappingDiv.children()[1];
222
223                     var siblingParents = c.getSiblingParents({element1: divA, element2: divB});
224
225                     expect(siblingParents.element1.sameNode(divA)).to.equal(true, 'divA');
226                     expect(siblingParents.element2.sameNode(divB)).to.equal(true, 'divB');
227                 });
228
229                 it('returns sibling parents - example 1', function() {
230                     var c = canvas.fromXML('<section>Alice <span>has a cat</span></section>'),
231                         section = c.doc(),
232                         aliceText = section.children()[0],
233                         span = section.children()[1],
234                         spanText = span.children()[0];
235
236                     var siblingParents = c.getSiblingParents({element1: aliceText, element2: spanText});
237
238                     expect(siblingParents.element1.sameNode(aliceText)).to.equal(true, 'aliceText');
239                     expect(siblingParents.element2.sameNode(span)).to.equal(true, 'span');
240                 });
241             })
242
243             describe('free text handling', function() {
244                     it('sees free text', function() {
245                         var c = canvas.fromXML('<section>Alice <span>has</span> a cat</section>'),
246                             children = c.doc().children();
247                         expect(children.length).to.equal(3);
248                         expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
249                         expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
250                         expect(children[2]).to.be.instanceOf(documentElement.DocumentTextElement);
251                     });
252             });
253             
254             describe('white characters handling', function() {
255                 it('says empty element node has no children', function() {
256                     var c = canvas.fromXML('<section></section>');
257                     expect(c.doc().children().length).to.equal(0);
258                 });
259                 it('says element node with one space has one DocumentTextElement', function() {
260                     var c = canvas.fromXML('<section> </section>');
261                     expect(c.doc().children().length).to.equal(1);
262                     expect(c.doc().children()[0]).to.be.instanceOf(documentElement.DocumentTextElement);
263                     expect(c.doc().children()[0].getText()).to.equal(' ');
264                 });
265                 it('ignores white space surrounding block elements', function() {
266                     var c = canvas.fromXML('<section> <div></div> </section>');
267                     var children = c.doc().children();
268                     expect(children.length).to.equal(1);
269                     expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
270                 });
271                 it('ignores white space between block elements', function() {
272                     var c = canvas.fromXML('<section><div></div> <div></div></section>');
273                     var children = c.doc().children();
274                     expect(children.length === 2);
275                     [0,1].forEach(function(idx) {
276                         expect(children[idx]).to.be.instanceOf(documentElement.DocumentNodeElement);
277                     });
278                 });
279
280                 it('trims white space from the beginning and the end of the block elements', function() {
281                     var c = canvas.fromXML('<section> Alice <span>has</span> a cat </section>');
282                     expect(c.doc().children()[0].getText()).to.equal('Alice ');
283                     expect(c.doc().children()[2].getText()).to.equal(' a cat');
284                 });
285
286                 it('normalizes string of white characters to one space at the inline element boundries', function() {
287                     var c = canvas.fromXML('<span>   Alice has a cat   </span>');
288                     expect(c.doc().children()[0].getText()).to.equal(' Alice has a cat ');
289                 });
290
291                 it('normalizes string of white characters to one space before inline element', function() {
292                     var c = canvas.fromXML('<div>Alice has  <span>a cat</span></div>');
293                     expect(c.doc().children()[0].getText()).to.equal('Alice has ');
294                 });
295                 
296                 it('normalizes string of white characters to one space after inline element', function() {
297                     var c = canvas.fromXML('<div>Alice has <span>a</span>  cat</div>');
298                     expect(c.doc().children()[2].getText()).to.equal(' cat');
299                 });
300             });
301
302             describe('getting vertically first text element', function() {
303                 it('returns the first child if it\'s text element, ignores metadata', function() {
304                     var c = canvas.fromXML('<section><metadata><dc:author>author</dc:author></metadata>Alice<div>has</div>a cat</section>'),
305                         first = c.doc().getVerticallyFirstTextElement();
306
307                     expect(first.sameNode(c.doc().children()[1])).to.be.true;
308                 });
309
310                 it('looks recursively inside node elements if they precede text element', function() {
311                     var c = canvas.fromXML('\
312                             <section>\
313                                 <div>\
314                                     <div>\
315                                         Alice\
316                                     </div>\
317                                 </div>\
318                                 Some text\
319                             </section>'),
320                         textAlice = c.doc().children()[0].children()[0].children()[0],
321                         first = c.doc().getVerticallyFirstTextElement();
322
323                     expect(textAlice).to.be.instanceOf(documentElement.DocumentTextElement);
324                     expect(first.sameNode(textAlice)).to.be.true;
325                 });
326             });
327         });
328
329         describe('manipulation api', function() {
330
331             describe('Basic Element inserting', function() {
332                 it('can put new NodeElement at the end', function() {
333                     var c = canvas.fromXML('<section></section>'),
334                         appended = c.doc().append({tag: 'header', klass: 'some.class'}),
335                         children = c.doc().children();
336
337                     expect(children.length).to.equal(1);
338                     expect(children[0].sameNode(appended)).to.be.true;
339                 });
340
341                 it('can put new TextElement at the end', function() {
342                     var c = canvas.fromXML('<section></section>'),
343                         appended = c.doc().append({text: 'Alice'}),
344                         children = c.doc().children();
345
346                     expect(children.length).to.equal(1);
347                     expect(children[0].sameNode(appended)).to.be.true;
348                     expect(children[0].getText()).to.equal('Alice');
349                 });
350
351                 it('can put new NodeElement at the beginning', function() {
352                     var c = canvas.fromXML('<section><div></div></section>'),
353                         prepended = c.doc().prepend({tag: 'header', klass: 'some.class'}),
354                         children = c.doc().children();
355
356                     expect(children).to.have.length(2);
357                     expect(children[0].sameNode(prepended)).to.be.true;
358                 });
359
360                 it('can put new TextElement at the beginning', function() {
361                     var c = canvas.fromXML('<section><div></div></section>'),
362                         prepended = c.doc().prepend({text: 'Alice'}),
363                         children = c.doc().children();
364
365                     expect(children).to.have.length(2)
366                     expect(children[0].sameNode(prepended)).to.be.true;
367                     expect(children[0].getText()).to.equal('Alice');
368                 });
369
370                 it('can put new NodeElement after another NodeElement', function() {
371                     var c = canvas.fromXML('<section><div></div></section>'),
372                         div = c.doc().children()[0],
373                         added = div.after({tag: 'header', klass: 'some.class'}),
374                         children = c.doc().children();
375                     expect(children.length).to.equal(2);
376                     expect(children[1].sameNode(added)).to.be.true;
377                 });
378
379                 it('can put new Nodeelement before another element', function() {
380                     var c = canvas.fromXML('<section><div></div></section>'),
381                         div = c.doc().children()[0],
382                         added = div.before({tag: 'header', klass: 'some.class'}),
383                         children = c.doc().children();
384                     expect(children.length).to.equal(2);
385                     expect(children[0].sameNode(added)).to.be.true;
386                 });
387
388                 it('can put new DocumentNodeElement after DocumentTextElement', function() {
389                     var c = canvas.fromXML('<section>Alice</section>'),
390                         text = c.doc().children()[0],
391                         added = text.after({tag: 'p'}),
392                         children = c.doc().children();
393
394                     expect(children.length).to.equal(2);
395                     expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
396                     expect(children[0].getText()).to.equal('Alice');
397                     expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
398                     expect(children[1].sameNode(added)).to.be.true;
399                 });
400                 it('can put new DocumentNodeElement before DocumentTextElement', function() {
401                     var c = canvas.fromXML('<section>Alice</section>'),
402                         text = c.doc().children()[0],
403                         added = text.before({tag: 'p'}),
404                         children = c.doc().children();
405
406                     expect(children.length).to.equal(2);
407                     expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
408                     expect(children[0].sameNode(added)).to.be.true;
409                     expect(children[1]).to.be.instanceOf(documentElement.DocumentTextElement);
410                     expect(children[1].getText()).to.equal('Alice');
411                 });
412
413                 it('can divide DocumentTextElement with a new DocumentNodeElement', function() {
414                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
415                         section = c.doc(),
416                         text = section.children()[0];
417
418                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 5}),
419                         sectionChildren = section.children(),
420                         lhsText = sectionChildren[0],
421                         rhsText = sectionChildren[2];
422
423                     expect(lhsText.getText()).to.equal('Alice');
424                     expect(returned.sameNode(sectionChildren[1]));
425                     expect(rhsText.getText()).to.equal(' has a cat');
426                 });
427
428                 it('treats dividing DocumentTextElement at the very end as appending after it', function() {
429                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
430                         section = c.doc(),
431                         text = section.children()[0];
432
433                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 15}),
434                         sectionChildren = section.children(),
435                         textElement = sectionChildren[0],
436                         nodeElement = sectionChildren[1];
437
438                     expect(sectionChildren.length).to.equal(2);
439                     expect(textElement.getText()).to.equal('Alice has a cat');
440                     expect(returned.sameNode(nodeElement)).to.be.true;
441                     expect(nodeElement.getWlxmlTag()).to.equal('aside');
442                 });
443
444                 it('treats dividing DocumentTextElement at the very beginning as appending before it', function() {
445                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
446                         section = c.doc(),
447                         text = section.children()[0];
448
449                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 0}),
450                         sectionChildren = section.children(),
451                         nodeElement = sectionChildren[0],
452                         textElement = sectionChildren[1];
453                         
454                     expect(sectionChildren.length).to.equal(2);
455                     expect(textElement.getText()).to.equal('Alice has a cat');
456                     expect(returned.sameNode(nodeElement)).to.be.true;
457                     expect(nodeElement.getWlxmlTag()).to.equal('aside');
458                 });
459             });
460
461             describe('Splitting text', function() {
462                 
463                 it('splits DocumentTextElement\'s parent into two DocumentNodeElements of the same type', function() {
464                     var c = canvas.fromXML('<section><header>Some header</header></section>'),
465                         section = c.doc(),
466                         text = section.children()[0].children()[0];
467
468                     var returnedValue = text.split({offset: 5});
469                     expect(section.children().length).to.equal(2, 'section has two children');
470                     
471                     var header1 = section.children()[0];
472                     var header2 = section.children()[1];
473
474                     expect(header1.getWlxmlTag()).to.equal('header', 'first section child represents wlxml header');
475                     expect(header1.children().length).to.equal(1, 'first header has one text child');
476                     expect(header1.children()[0].getText()).to.equal('Some ', 'first header has correct content');
477                     expect(header2.getWlxmlTag()).to.equal('header', 'second section child represents wlxml header');
478                     expect(header2.children().length).to.equal(1, 'second header has one text child');
479                     expect(header2.children()[0].getText()).to.equal('header', 'second header has correct content');
480
481                     expect(returnedValue.first.sameNode(header1)).to.equal(true, 'first node returnde');
482                     expect(returnedValue.second.sameNode(header2)).to.equal(true, 'second node returned');
483                 });
484
485                 it('leaves empty copy of DocumentNodeElement if splitting at the very beginning', function() {
486                         var c = canvas.fromXML('<section><header>Some header</header></section>'),
487                         section = c.doc(),
488                         text = section.children()[0].children()[0];
489
490                         text.split({offset: 0});
491                         
492                         var header1 = section.children()[0];
493                         var header2 = section.children()[1];
494
495                         expect(header1.children().length).to.equal(0);
496                         expect(header2.children()[0].getText()).to.equal('Some header');
497                 });
498
499                 it('leaves empty copy of DocumentNodeElement if splitting at the very end', function() {
500                         var c = canvas.fromXML('<section><header>Some header</header></section>'),
501                         section = c.doc(),
502                         text = section.children()[0].children()[0];
503
504                         text.split({offset: 11});
505                         
506                         var header1 = section.children()[0];
507                         var header2 = section.children()[1];
508
509                         expect(header1.children()[0].getText()).to.equal('Some header');
510                         expect(header2.children().length).to.equal(0);
511                 });
512
513                 it('keeps DocumentTextElement\'s parent\'s children elements intact', function() {
514                     var c = canvas.fromXML('\
515                             <section>\
516                                 <header>\
517                                     A <span>fancy</span> and <span>nice</span> header\
518                                 </header>\
519                             </section>'),
520                         section = c.doc(),
521                         header = section.children()[0],
522                         textAnd = header.children()[2];
523
524                     textAnd.split({offset: 2});
525                     
526                     var sectionChildren = section.children();
527                     expect(sectionChildren.length).to.equal(2, 'Section has two children');
528                     expect(sectionChildren[0].getWlxmlTag()).to.equal('header', 'First section element is a wlxml header');
529                     expect(sectionChildren[1].getWlxmlTag()).to.equal('header', 'Second section element is a wlxml header');
530
531                     var firstHeaderChildren = sectionChildren[0].children();
532                     expect(firstHeaderChildren.length).to.equal(3, 'First header has three children');
533                     expect(firstHeaderChildren[0].getText()).to.equal('A ', 'First header starts with a text');
534                     expect(firstHeaderChildren[1].getWlxmlTag()).to.equal('span', 'First header has span in the middle');
535                     expect(firstHeaderChildren[2].getText()).to.equal(' a', 'First header ends with text');
536
537                     var secondHeaderChildren = sectionChildren[1].children();
538                     expect(secondHeaderChildren.length).to.equal(3, 'Second header has three children');
539                     expect(secondHeaderChildren[0].getText()).to.equal('nd ', 'Second header starts with text');
540                     expect(secondHeaderChildren[1].getWlxmlTag()).to.equal('span', 'Second header has span in the middle');
541                     expect(secondHeaderChildren[2].getText()).to.equal(' header', 'Second header ends with text');
542                 });
543             });
544
545             describe('wrapping', function() {
546                 it('wraps DocumentNodeElement', function() {
547                     var c = canvas.fromXML('<section><div></div></section>'),
548                         div = c.doc().children()[0];
549                     
550                     var returned = div.wrapWithNodeElement({tag: 'header', klass: 'some.class'}),
551                         parent = div.parent(),
552                         parent2 = c.doc().children()[0];
553
554                     expect(returned.sameNode(parent)).to.be.true;
555                     expect(returned.sameNode(parent2)).to.be.true;
556                     expect(returned.getWlxmlTag()).to.equal('header');
557                     expect(returned.getWlxmlClass()).to.equal('some.class');
558                 });
559                 it('wraps DocumentTextElement', function() {
560                     var c = canvas.fromXML('<section>Alice</section>'),
561                         text = c.doc().children()[0];
562                     
563                     var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class'}),
564                         parent = text.parent(),
565                         parent2 = c.doc().children()[0];
566
567                     expect(returned.sameNode(parent)).to.be.true;
568                     expect(returned.sameNode(parent2)).to.be.true;
569                     expect(returned.getWlxmlTag()).to.equal('header');
570                     expect(returned.getWlxmlClass()).to.equal('some.class');
571                 });
572                 
573                 describe('wrapping part of DocumentTextElement', function() {
574                     [{start: 5, end: 12}, {start: 12, end: 5}].forEach(function(offsets) {
575                         it('wraps in the middle ' + offsets.start + '/' + offsets.end, function() {
576                             var c = canvas.fromXML('<section>Alice has a cat</section>'),
577                                 text = c.doc().children()[0];
578                             
579                             var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class', start: offsets.start, end: offsets.end}),
580                                 children = c.doc().children();
581
582                             expect(children.length).to.equal(3);
583                             
584                             expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
585                             expect(children[0].getText()).to.equal('Alice');
586
587                             expect(children[1].sameNode(returned)).to.be.true;
588                             expect(returned.getWlxmlTag()).to.equal('header');
589                             expect(returned.getWlxmlClass()).to.equal('some.class');
590                             expect(children[1].children().length).to.equal(1);
591                             expect(children[1].children()[0].getText()).to.equal(' has a ');
592
593                             expect(children[2]).to.be.instanceOf(documentElement.DocumentTextElement);
594                             expect(children[2].getText()).to.equal('cat');
595                         });
596                     });
597
598                     it('wraps whole text inside DocumentTextElement if offsets span entire content', function() {
599                          var c = canvas.fromXML('<section>Alice has a cat</section>'),
600                              text = c.doc().children()[0];
601                          
602                          var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class', start: 0, end: 15}),
603                              children = c.doc().children();
604
605                          expect(children.length).to.equal(1);
606                          expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
607                          expect(children[0].children()[0].getText()).to.equal('Alice has a cat');
608                     });
609                 });
610
611                 it('wraps text spanning multiple sibling DocumentTextNodes', function() {
612                     var c = canvas.fromXML('<section>Alice has a <span>small</span> cat</section>'),
613                         section = c.doc(),
614                         wrapper = c.wrapText({
615                             inside: section, 
616                             _with: {tag: 'span', klass: 'some.class'},
617                             offsetStart: 6,
618                             offsetEnd: 4,
619                             textNodeIdx: [0,2]
620                         });
621
622                     expect(section.children().length).to.equal(2);
623                     expect(section.children()[0]).to.be.instanceOf(documentElement.DocumentTextElement);
624                     expect(section.children()[0].getText()).to.equal('Alice ');
625
626                     var wrapper2 = section.children()[1];
627                     expect(wrapper2.sameNode(wrapper)).to.be.true;
628
629                     var wrapperChildren = wrapper.children();
630                     expect(wrapperChildren.length).to.equal(3);
631                     expect(wrapperChildren[0].getText()).to.equal('has a ');
632
633                     expect(wrapperChildren[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
634                     expect(wrapperChildren[1].children().length).to.equal(1);
635                     expect(wrapperChildren[1].children()[0].getText()).to.equal('small');
636
637                     expect(wrapperChildren[2].getText()).to.equal(' cat');
638                 });
639
640                 it('wraps multiple sibling Elements', function() {
641                     var c = canvas.fromXML('<section>Alice<div>has</div><div>a cat</div></section>'),
642                         section = c.doc(),
643                         aliceText = section.children()[0],
644                         firstDiv = section.children()[1],
645                         lastDiv = section.children()[section.children().length -1];
646
647                     var returned = c.wrapElements({
648                             element1: aliceText,
649                             element2: lastDiv,
650                             _with: {tag: 'header'}
651                         });
652
653                     var sectionChildren = section.children(),
654                         header = sectionChildren[0],
655                         headerChildren = header.children();
656
657                     expect(sectionChildren).to.have.length(1);
658                     expect(header.sameNode(returned)).to.equal(true, 'wrapper returned');
659                     expect(headerChildren).to.have.length(3);
660                     expect(headerChildren[0].sameNode(aliceText)).to.equal(true, 'first node wrapped');
661                     expect(headerChildren[1].sameNode(firstDiv)).to.equal(true, 'second node wrapped');
662                     expect(headerChildren[2].sameNode(lastDiv)).to.equal(true, 'third node wrapped');
663                 });
664                 it('wraps multiple sibling Elements - middle case', function() {
665                     var c = canvas.fromXML('<section><div></div>div></div><div></div><div></div></section>'),
666                         section = c.doc(),
667                         div1 = section.children()[0],
668                         div2 = section.children()[1],
669                         div3 = section.children()[2],
670                         div4 = section.children()[3];
671
672                     var returned = c.wrapElements({
673                             element1: div2,
674                             element2: div3,
675                             _with: {tag: 'header'}
676                         });
677
678                     var sectionChildren = section.children(),
679                         header = sectionChildren[1],
680                         headerChildren = header.children();
681
682                     expect(sectionChildren).to.have.length(3);
683                     expect(headerChildren).to.have.length(2);
684                     expect(headerChildren[0].sameNode(div2)).to.equal(true, 'first node wrapped');
685                     expect(headerChildren[1].sameNode(div3)).to.equal(true, 'second node wrapped');
686                 });
687             });
688
689             describe('unwrapping', function() {
690                 it('unwraps DocumentTextElement from its parent DocumentNodeElement if it\'s its only child', function() {
691                     var c = canvas.fromXML('<section>Alice <span>has a</span> cat</section>'),
692                     section = c.doc(),
693                     text = section.children()[1].children()[0];
694
695                     var newTextContainer = text.unwrap();
696
697                     expect(section.children().length).to.equal(1, 'section has one child');
698                     expect(section.children()[0].getText()).to.equal('Alice has a cat');
699                     expect(newTextContainer.sameNode(c.doc())).to.equal(true, 'unwrap returns new text parent DocumentNodeElement');
700                 })
701             });
702         });
703
704         describe('Lists api', function() {
705             describe('creating lists', function() {
706                 it('allows creation of a list from existing sibling DocumentElements', function() {
707                     var c = canvas.fromXML('\
708                         <section>\
709                             Alice\
710                             <div>has</div>\
711                             a\
712                             <div>cat</div>\
713                         </section>'),
714                         section = c.doc(),
715                         textHas = section.children()[1],
716                         divA = section.children()[2]
717                     
718                     c.list.create({element1: textHas, element2: divA});
719
720                     expect(section.children().length).to.equal(3, 'section has three child elements');
721
722                     var child1 = section.children()[0],
723                         list = section.children()[1],
724                         child3 = section.children()[2];
725
726                     expect(child1.getText()).to.equal('Alice');
727                     expect(list.is('list')).to.equal(true, 'second child is a list');
728                     expect(list.children().length).to.equal(2, 'list contains two elements');
729                     list.children().forEach(function(child) {
730                         expect(child.getWlxmlClass()).to.equal('item', 'list childs have wlxml class of item');
731                     });
732                     expect(child3.children()[0].getText()).to.equal('cat');
733                 });
734                 
735                 it('allows creating nested list from existing sibling list items', function() {
736                     var c = canvas.fromXML('\
737                         <section>\
738                             <div class="list-items">\
739                                 <div class="item">A</div>\
740                                 <div class="item">B</div>\
741                                 <div class="item">C</div>\
742                                 <div class="item">D</div>\
743                             </div>\
744                         </section>'),
745                         outerList = c.doc().children()[0],
746                         itemB = outerList.children()[1],
747                         itemC = outerList.children()[2];
748
749
750                         c.list.create({element1: itemB, element2: itemC});
751
752                     var outerListItems = outerList.children(),
753                         innerList = outerListItems[1].children()[0],
754                         innerListItems = innerList.children();
755
756                     expect(outerListItems.length).to.equal(3, 'outer list has three items');
757                     expect(outerListItems[0].children()[0].getText()).to.equal('A', 'first outer item ok');
758                     expect(outerListItems[1].getWlxmlClass()).to.equal('item', 'inner list is wrapped by item element');
759
760                     expect(innerList.is('list')).to.equal(true, 'inner list created');
761                     expect(innerListItems.length).to.equal(2, 'inner list has two items');
762                     expect(innerListItems[0].children()[0].getText()).to.equal('B', 'first inner item ok');
763                     expect(innerListItems[1].children()[0].getText()).to.equal('C', 'second inner item ok');
764
765                     expect(outerListItems[2].children()[0].getText()).to.equal('D', 'last outer item ok');
766
767                 });
768
769             });
770
771             describe('extracting list items', function() {
772                 it('creates two lists with extracted items in the middle if extracting from the middle of the list', function() {
773                     var c = canvas.fromXML('\
774                         <section>\
775                             <div class="list.items">\
776                                 <div class="item">0</div>\
777                                 <div class="item">1</div>\
778                                 <div class="item">2</div>\
779                                 <div class="item">3</div>\
780                             </div>\
781                         </section>'),
782                         list = c.doc().children()[0],
783                         item1 = list.children()[1],
784                         item2 = list.children()[2];
785
786                     c.list.extractItems({element1: item1, element2: item2});
787
788                     var section = c.doc(),
789                         list1 = section.children()[0],
790                         oldItem1 = section.children()[1],
791                         oldItem2 = section.children()[2],
792                         list2 = section.children()[3];
793
794                     expect(section.children().length).to.equal(4, 'section contains four children');
795                     
796                     expect(list1.is('list')).to.equal(true, 'first section child is a list');
797                     expect(list1.children().length).to.equal(1, 'first list has one child');
798                     expect(list1.children()[0].children()[0].getText()).to.equal('0', 'first item of the first list is a first item of the original list');
799
800                     expect(oldItem1.children()[0].getText()).to.equal('1', 'first item got extracted');
801                     expect(oldItem1.getWlxmlClass() === undefined).to.equal(true, 'first extracted element has no wlxml class');
802
803                     expect(oldItem2.children()[0].getText()).to.equal('2', 'second item got extracted');
804                     expect(oldItem2.getWlxmlClass() === undefined).to.equal(true, 'second extracted element has no wlxml class');
805
806                     expect(list2.is('list')).to.equal(true, 'last section child is a list');
807                     expect(list2.children().length).to.equal(1, 'second list has one child');
808                     expect(list2.children()[0].children()[0].getText()).to.equal('3', 'first item of the second list is a last item of the original list');
809                 });
810
811                 it('puts extracted items above the list if starting item is the first one', function() {
812                     var c = canvas.fromXML('\
813                         <section>\
814                             <div class="list.items">\
815                                 <div class="item">0</div>\
816                                 <div class="item">1</div>\
817                                 <div class="item">2</div>\
818                             </div>\
819                         </section>'),
820                         list = c.doc().children()[0],
821                         item1 = list.children()[0],
822                         item2 = list.children()[1],
823                         item3 = list.children()[2];
824
825                     c.list.extractItems({element1: item1, element2: item2});
826
827                     var section = c.doc(),
828                         oldItem1 = section.children()[0],
829                         oldItem2 = section.children()[1],
830                         newList = section.children()[2];
831
832                     expect(section.children().length).to.equal(3, 'section has three children');
833                     expect(oldItem1.children()[0].getText()).to.equal('0', 'first item extracted');
834                     expect(oldItem2.children()[0].getText()).to.equal('1', 'second item extracted');
835                     expect(newList.is('list')).to.equal(true, 'list lies below extracted item');
836                     expect(newList.children().length).to.equal(1, 'list has now one child');
837                 });
838
839                 it('puts extracted items below the list if ending item is the last one', function() {
840                     var c = canvas.fromXML('\
841                         <section>\
842                             <div class="list.items">\
843                                 <div class="item">0</div>\
844                                 <div class="item">1</div>\
845                                 <div class="item">2</div>\
846                             </div>\
847                         </section>'),
848                         list = c.doc().children()[0],
849                         item1 = list.children()[0],
850                         item2 = list.children()[1],
851                         item3 = list.children()[2];
852
853                     c.list.extractItems({element1: item2, element2: item3});
854
855                     var section = c.doc(),
856                         oldItem1 = section.children()[1],
857                         oldItem2 = section.children()[2],
858                         newList = section.children()[0];
859
860                     expect(section.children().length).to.equal(3, 'section has three children');
861                     expect(oldItem1.children()[0].getText()).to.equal('1', 'first item extracted');
862                     expect(oldItem2.children()[0].getText()).to.equal('2', 'second item extracted');
863                     expect(newList.is('list')).to.equal(true, 'list lies above extracted item');
864                     expect(newList.children().length).to.equal(1, 'list has now one child');
865                 });
866
867                 it('removes list if all its items are extracted', function() {
868                     var c = canvas.fromXML('\
869                         <section>\
870                             <div class="list.items">\
871                                 <div class="item">some item</div>\
872                                 <div class="item">some item 2</div>\
873                             </div>\
874                         </section>'),
875                         list = c.doc().children()[0],
876                         item1 = list.children()[0],
877                         item2 = list.children()[1];
878
879                     c.list.extractItems({element1: item1, element2: item2});
880
881                     var section = c.doc(),
882                         list1 = section.children()[0],
883                         oldItem1 = section.children()[0],
884                         oldItem2 = section.children()[1];
885
886                     expect(section.children().length).to.equal(2, 'section contains two children');
887                     expect(oldItem1.children()[0].getText()).to.equal('some item');
888                     expect(oldItem2.children()[0].getText()).to.equal('some item 2');
889                 });
890
891                 it('creates two lists with extracted items in the middle if extracting from the middle of the list - nested case' , function() {
892                     var c = canvas.fromXML('\
893                         <section>\
894                             <div class="list.items">\
895                                 <div class="item">0</div>\
896                                 <div class="item">\
897                                     <div class="list.items">\
898                                         <div class="item">1.1</div>\
899                                         <div class="item">1.2</div>\
900                                         <div class="item">1.3</div>\
901                                     </div>\
902                                 </div>\
903                                 <div class="item">2</div>\
904                             </div>\
905                         </section>'),
906                         list = c.doc().children()[0],
907                         nestedList = list.children()[1].children()[0],
908                         nestedListItem = nestedList.children()[1];
909
910                     c.list.extractItems({element1: nestedListItem, element2: nestedListItem});
911
912                     var section = c.doc(),
913                         list = section.children()[0],
914                         item1 = list.children()[0],
915                         item2 = list.children()[1], //
916                         item3 = list.children()[2],
917                         item4 = list.children()[3], //
918                         item5 = list.children()[4],
919                         nestedList1 = item2.children()[0],
920                         nestedList2 = item4.children()[0];
921
922                     expect(list.children().length).to.equal(5, 'top list has five items');
923                     
924                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
925
926                     expect(item2.getWlxmlClass()).to.equal('item', 'first nested list is still wrapped in item element');
927                     expect(nestedList1.children().length).to.equal(1, 'first nested list is left with one child');
928                     expect(nestedList1.children()[0].children()[0].getText()).to.equal('1.1', 'first nested list item left alone');
929                     
930                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
931
932                     expect(item4.getWlxmlClass()).to.equal('item', 'second nested list is still wrapped in item element');
933                     expect(nestedList2.children().length).to.equal(1, 'second nested list is left with one child');
934                     expect(nestedList2.children()[0].children()[0].getText()).to.equal('1.3', 'second nested list item left alone');
935
936                     expect(item5.children()[0].getText()).to.equal('2', 'last item ok');
937                 });
938
939                 it('puts extracted items below the list if ending item is the last one - nested case' , function() {
940                     var c = canvas.fromXML('\
941                         <section>\
942                             <div class="list.items">\
943                                 <div class="item">0</div>\
944                                 <div class="item">\
945                                     <div class="list.items">\
946                                         <div class="item">1.1</div>\
947                                         <div class="item">1.2</div>\
948                                         <div class="item">1.3</div>\
949                                     </div>\
950                                 </div>\
951                                 <div class="item">2</div>\
952                             </div>\
953                         </section>'),
954                         list = c.doc().children()[0],
955                         nestedList = list.children()[1].children()[0],
956                         nestedListItem1 = nestedList.children()[1],
957                         nestedListItem2 = nestedList.children()[2];
958
959                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
960
961                     var section = c.doc(),
962                         list = section.children()[0],
963                         item1 = list.children()[0],
964                         item2 = list.children()[1],
965                         item3 = list.children()[2],
966                         item4 = list.children()[3],
967                         item5 = list.children()[4];
968                     nestedList = item2.children()[0];
969
970                     expect(list.children().length).to.equal(5, 'top list has five items');
971                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
972                     expect(item2.getWlxmlClass()).to.equal('item', 'nested list is still wrapped in item element');
973                     expect(nestedList.children().length).to.equal(1, 'nested list is left with one child');
974                     expect(nestedList.children()[0].children()[0].getText()).to.equal('1.1', 'nested list item left alone');
975                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
976                     expect(item4.children()[0].getText()).to.equal('1.3', 'fourth item ok');
977                     expect(item5.children()[0].getText()).to.equal('2', 'fifth item ok');
978                 });
979
980                 it('puts extracted items above the list if starting item is the first one - nested case' , function() {
981                     var c = canvas.fromXML('\
982                         <section>\
983                             <div class="list.items">\
984                                 <div class="item">0</div>\
985                                 <div class="item">\
986                                     <div class="list.items">\
987                                         <div class="item">1.1</div>\
988                                         <div class="item">1.2</div>\
989                                         <div class="item">1.3</div>\
990                                     </div>\
991                                 </div>\
992                                 <div class="item">2</div>\
993                             </div>\
994                         </section>'),
995                         list = c.doc().children()[0],
996                         nestedList = list.children()[1].children()[0],
997                         nestedListItem1 = nestedList.children()[0],
998                         nestedListItem2 = nestedList.children()[1];
999
1000                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
1001
1002                     var section = c.doc(),
1003                         list = section.children()[0],
1004                         item1 = list.children()[0],
1005                         item2 = list.children()[1],
1006                         item3 = list.children()[2],
1007                         item4 = list.children()[3],
1008                         item5 = list.children()[4];
1009                     nestedList = item4.children()[0];
1010
1011                     expect(list.children().length).to.equal(5, 'top list has five items');
1012                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1013                     expect(item2.children()[0].getText()).to.equal('1.1', 'second item ok');
1014                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1015                     
1016                     expect(item4.getWlxmlClass()).to.equal('item', 'nested list is still wrapped in item element');
1017                     expect(nestedList.children().length).to.equal(1, 'nested list is left with one child');
1018                     expect(nestedList.children()[0].children()[0].getText()).to.equal('1.3', 'nested list item left alone');
1019                     expect(item5.children()[0].getText()).to.equal('2', 'fifth item ok');
1020                 });
1021
1022                 it('removes list if all its items are extracted - nested case', function() {
1023                     var c = canvas.fromXML('\
1024                         <section>\
1025                             <div class="list.items">\
1026                                 <div class="item">0</div>\
1027                                 <div class="item">\
1028                                     <div class="list.items">\
1029                                         <div class="item">1.1</div>\
1030                                         <div class="item">1.2</div>\
1031                                     </div>\
1032                                 </div>\
1033                                 <div class="item">2</div>\
1034                             </div>\
1035                         </section>'),
1036                         list = c.doc().children()[0],
1037                         nestedList = list.children()[1].children()[0],
1038                         nestedListItem1 = nestedList.children()[0],
1039                         nestedListItem2 = nestedList.children()[1];
1040
1041                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
1042
1043                     var section = c.doc(),
1044                         list = section.children()[0],
1045                         item1 = list.children()[0],
1046                         item2 = list.children()[1],
1047                         item3 = list.children()[2],
1048                         item4 = list.children()[3];
1049
1050                     expect(list.children().length).to.equal(4, 'top list has four items');
1051                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1052                     expect(item2.children()[0].getText()).to.equal('1.1', 'second item ok');
1053                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1054                     expect(item4.children()[0].getText()).to.equal('2', 'fourth item ok');
1055                 });
1056
1057                 it('extracts items out of outer most list when merge flag is set to false', function() {
1058                     var c = canvas.fromXML('\
1059                         <section>\
1060                             <div class="list.items">\
1061                                 <div class="item">0</div>\
1062                                 <div class="item">\
1063                                     <div class="list.items">\
1064                                         <div class="item">1.1</div>\
1065                                         <div class="item">1.2</div>\
1066                                     </div>\
1067                                 </div>\
1068                                 <div class="item">2</div>\
1069                             </div>\
1070                         </section>'),
1071                         section = c.doc(),
1072                         list = section.children()[0],
1073                         nestedList = list.children()[1].children()[0],
1074                         nestedListItem = nestedList.children()[0];
1075
1076                     var test = c.list.extractItems({element1: nestedListItem, element2: nestedListItem, merge: false});
1077
1078                     expect(test).to.equal(true, 'extraction status ok');
1079
1080                     var sectionChildren = section.children(),
1081                         extractedItem = sectionChildren[1];
1082
1083                     expect(sectionChildren.length).to.equal(3, 'section has three children');
1084                     expect(sectionChildren[0].is('list')).to.equal(true, 'first child is a list');
1085
1086                     expect(extractedItem.getWlxmlTag()).to.equal('div', 'extracted item is a wlxml div');
1087                     expect(extractedItem.getWlxmlClass()).to.equal(undefined, 'extracted item has no wlxml class');
1088                     expect(extractedItem.children()[0].getText()).to.equal('1.1', 'extracted item ok');
1089                     expect(sectionChildren[2].is('list')).to.equal(true, 'second child is a list');
1090                 });
1091             });
1092         });
1093
1094     });
1095
1096     describe('Cursor', function() {
1097
1098         var getSelection;
1099
1100         var findTextNode = function(inside, text) {
1101             var nodes = inside.find(':not(iframe)').addBack().contents().filter(function() {
1102                 return this.nodeType === Node.TEXT_NODE && this.data === text;
1103             });
1104             if(nodes.length)
1105                 return nodes[0];
1106             return null;
1107         }
1108
1109         beforeEach(function() {
1110             getSelection = sinon.stub(window, 'getSelection');
1111         });
1112
1113         afterEach(function() {
1114             getSelection.restore();
1115         });
1116
1117         it('returns position when browser selection collapsed', function() {
1118             var c = canvas.fromXML('<section>Alice has a cat</section>'),
1119                 dom = c.doc().dom(),
1120                 text = findTextNode(dom, 'Alice has a cat');
1121
1122             expect(text.nodeType).to.equal(Node.TEXT_NODE, 'correct node selected');
1123             expect($(text).text()).to.equal('Alice has a cat');
1124
1125             getSelection.returns({
1126                 anchorNode: text,
1127                 focusNode: text,
1128                 anchorOffset: 5,
1129                 focusOffset: 5,
1130                 isCollapsed: true
1131             });
1132             var cursor = c.getCursor(),
1133                 position = cursor.getPosition();
1134
1135             expect(cursor.isSelecting()).to.equal(false, 'cursor is not selecting anything');
1136             expect(position.element.getText()).to.equal('Alice has a cat');
1137             expect(position.offset).to.equal(5);
1138             expect(position.offsetAtEnd).to.equal(false, 'offset is not at end');
1139
1140             getSelection.returns({
1141                 anchorNode: text,
1142                 focusNode: text,
1143                 anchorOffset: 15,
1144                 focusOffset: 15,
1145                 isCollapsed: true
1146             });
1147
1148             expect(cursor.getPosition().offsetAtEnd).to.equal(true, 'offset at end');
1149         });
1150
1151         it('returns boundries of selection when browser selection not collapsed', function() {
1152             var c = canvas.fromXML('<section>Alice <span>has</span> a <span>big</span> cat</section>'),
1153                 dom = c.doc().dom(),
1154                 text = {
1155                     alice: findTextNode(dom, 'Alice '),
1156                     has: findTextNode(dom, 'has'),
1157                     cat: findTextNode(dom, ' cat')
1158                 },
1159                 cursor = c.getCursor(),
1160                 aliceElement = c.getDocumentElement(text.alice),
1161                 catElement = c.getDocumentElement(text.cat);
1162
1163
1164                 [
1165                     {focus: text.alice, focusOffset: 1, anchor: text.cat,   anchorOffset: 2, selectionAnchor: catElement},
1166                     {focus: text.cat,   focusOffset: 2, anchor: text.alice, anchorOffset: 1, selectionAnchor: aliceElement}
1167                 ].forEach(function(s, idx) {
1168                     getSelection.returns({isColapsed: false, anchorNode: s.anchor, anchorOffset: s.anchorOffset, focusNode: s.focus, focusOffset: s.focusOffset});
1169
1170                     var selectionStart = cursor.getSelectionStart(),
1171                         selectionEnd = cursor.getSelectionEnd(),
1172                         selectionAnchor = cursor.getSelectionAnchor();
1173
1174                     expect(cursor.isSelecting()).to.equal(true, 'cursor is selecting');
1175                     expect(selectionStart.element.sameNode(aliceElement)).to.equal(true, '"Alice" is the start of the selection ' + idx);
1176                     expect(selectionStart.offset).to.equal(1, '"Alice" offset ok' + idx);
1177                     expect(selectionEnd.element.sameNode(catElement)).to.equal(true, '"Cat" is the start of the selection ' + idx);
1178                     expect(selectionEnd.offset).to.equal(2, '"Cat" offset ok' + idx);
1179                     expect(selectionAnchor.element.sameNode(s.selectionAnchor)).to.equal(true, 'anchor ok');
1180                     expect(selectionAnchor.offset).to.equal(s.anchorOffset, 'anchor offset ok');
1181                 });
1182         });
1183
1184         it('recognizes when browser selection boundries lies in sibling DocumentTextElements', function() {
1185             var c = canvas.fromXML('<section>Alice <span>has</span> a <span>big</span> cat</section>'),
1186                 dom = c.doc().dom(),
1187                 text = {
1188                     alice: findTextNode(dom, 'Alice '),
1189                     has: findTextNode(dom, 'has'),
1190                     a: findTextNode(dom, ' a '),
1191                     big: findTextNode(dom, 'big'),
1192                     cat: findTextNode(dom, ' cat'),
1193                 },
1194                 cursor = c.getCursor();
1195
1196             expect($(text.alice).text()).to.equal('Alice ');
1197             expect($(text.has).text()).to.equal('has');
1198             expect($(text.a).text()).to.equal(' a ');
1199             expect($(text.big).text()).to.equal('big');
1200             expect($(text.cat).text()).to.equal(' cat');
1201
1202             getSelection.returns({anchorNode: text.alice, focusNode: text.a});
1203             expect(cursor.isSelectingSiblings()).to.equal(true, '"Alice" and "a" are children');
1204
1205             getSelection.returns({anchorNode: text.alice, focusNode: text.cat});
1206             expect(cursor.isSelectingSiblings()).to.equal(true, '"Alice" and "cat" are children');
1207
1208             getSelection.returns({anchorNode: text.alice, focusNode: text.has});
1209             expect(cursor.isSelectingSiblings()).to.equal(false, '"Alice" and "has" are not children');
1210
1211             getSelection.returns({anchorNode: text.has, focusNode: text.big});
1212             expect(cursor.isSelectingSiblings()).to.equal(false, '"has" and "big" are not children');
1213             
1214         })
1215
1216         describe('zero width space handling', function() {
1217             it('position range includes ZWS at the boundries of text in case when native selection api doesn\'t', function() {
1218                 var c = canvas.fromXML("<section>Alice</section>"),
1219                     dom = c.doc().dom(),
1220                     textNode = findTextNode(dom, 'Alice'),
1221                     cursor = c.getCursor();
1222
1223                 textNode.data = utils.unicode.ZWS + 'Alice';
1224                 getSelection.returns({anchorNode: textNode, anchorOffset: 1, focusNode: textNode, focusOffset: 1});
1225                 expect(cursor.getPosition().offset).to.equal(0);
1226                 expect(cursor.getPosition().offsetAtBeginning).to.equal(true, 'offset at beginning');
1227                 
1228                 textNode.data = 'Alice' + utils.unicode.ZWS;
1229                 getSelection.returns({anchorNode: textNode, anchorOffset: 5, focusNode: textNode, focusOffset: 5});
1230                 expect(cursor.getPosition().offset).to.equal(6);
1231                 expect(cursor.getPosition().offsetAtEnd).to.equal(true, 'offset at end');
1232             });
1233         });
1234     });
1235
1236     describe('Serializing document to WLXML', function() {
1237         it('keeps document intact when no changes have been made', function() {
1238             var xmlIn = '<section>Alice<div>has</div>a <span class="uri" meta-uri="http://cat.com">cat</span>!</section>',
1239                 c = canvas.fromXML(xmlIn),
1240                 xmlOut = c.toXML();
1241
1242             var parser = new DOMParser(),
1243                 input = parser.parseFromString(xmlIn, "application/xml").childNodes[0],
1244                 output = parser.parseFromString(xmlOut, "application/xml").childNodes[0];
1245             
1246             expect(input.isEqualNode(output)).to.be.true;
1247         });
1248
1249         it('keeps arbitrary node attributes intact', function() {
1250             var xmlIn = '<section a="1" xmlns:dcterms="http://purl.org/dc/terms/"></section>',
1251                 $xmlOut = $(canvas.fromXML(xmlIn).toXML());
1252
1253             expect($xmlOut.attr('a')).to.equal('1');
1254             expect($xmlOut.attr('xmlns:dcterms')).to.equal('http://purl.org/dc/terms/');
1255         });
1256
1257         it('doesn\' serialize meta attribute if its empty', function() {
1258             var c;
1259
1260             c = canvas.fromXML('<section class="uri" meta-uri="some.uri"></section>');
1261             c.doc().setWlxmlMetaAttr('uri', '');
1262             expect($(c.toXML()).attr('meta-uri')).to.equal(undefined, 'overriding attribute with zero length string');
1263
1264             c = canvas.fromXML('<section class="uri"></section>');
1265             c.doc().setWlxmlMetaAttr('uri', '');
1266             expect($(c.toXML()).attr('meta-uri')).to.equal(undefined, 'setting attribute to zero length string');
1267         });
1268
1269         describe('output xml', function() {
1270             it('keeps entities intact', function() {
1271                 var xmlIn = '<section>&lt; &gt;</section>',
1272                     c = canvas.fromXML(xmlIn),
1273                     xmlOut = c.toXML();
1274                 expect(xmlOut).to.equal(xmlIn);
1275             });
1276             it('keeps entities intact when they form html/xml', function() {
1277                 var xmlIn = '<section>&lt;abc&gt;</section>',
1278                     c = canvas.fromXML(xmlIn),
1279                     xmlOut = c.toXML();
1280                 expect(xmlOut).to.equal(xmlIn);
1281             });
1282         });
1283
1284         describe('formatting output xml', function() {
1285             /*it('keeps white spaces at the edges of input xml', function() {
1286                 var xmlIn = '  <section></section>  ',
1287                 c = canvas.fromXML(xmlIn),
1288                 xmlOut = c.toXML();
1289
1290                 expect(xmlOut.substr(4)).to.equal('   <', 'start');
1291                 expect(xmlOut.substr(-2)).to.equal('>  ', 'end');
1292             });*/
1293             it('keeps white space between XML nodes', function() {
1294                 var xmlIn = '<section>\n\n\n<div></div>\n\n\n<div></div>\n\n\n</section>',
1295                 c = canvas.fromXML(xmlIn),
1296                 xmlOut = c.toXML();
1297
1298                 var partsIn = xmlIn.split('\n\n\n'),
1299                     partsOut = xmlOut.split('\n\n\n');
1300                 
1301                 expect(partsIn).to.deep.equal(partsOut);
1302             });
1303
1304             it('keeps white space between XML nodes - inline case', function() {
1305                 var xmlIn = '<section>\n\n\n<span></span>\n\n\n<span></span>\n\n\n</section>',
1306                 c = canvas.fromXML(xmlIn),
1307                 xmlOut = c.toXML();
1308
1309                 var partsIn = xmlIn.split('\n\n\n'),
1310                     partsOut = xmlOut.split('\n\n\n');
1311                 
1312                 expect(partsIn).to.deep.equal(partsOut);
1313             });
1314
1315             it('keeps white space at the beginning of text', function() {
1316                 var xmlIn = '<section>    abc<div>some div</div>    abc</section>',
1317                     c = canvas.fromXML(xmlIn),
1318                     xmlOut = c.toXML();
1319
1320                 expect(xmlOut).to.equal(xmlIn);
1321             });
1322
1323             it('nests new children block elements', function() {
1324                 var c = canvas.fromXML('<section></section>');
1325     
1326                 c.doc().append({tag: 'header'});
1327
1328                 var xmlOut = c.toXML();
1329                 expect(xmlOut.split('\n  ')[0]).to.equal('<section>', 'nesting start ok');
1330                 expect(xmlOut.split('\n').slice(-1)[0]).to.equal('</section>', 'nesting end ok');
1331
1332             });
1333
1334             it('doesn\'t nest new children inline elements', function() {
1335                 var c = canvas.fromXML('<section></section>');
1336     
1337                 c.doc().append({tag: 'span'});
1338
1339                 var xmlOut = c.toXML();
1340                 expect(xmlOut).to.equal('<section><span></span></section>');
1341             });
1342
1343             it('keeps original white space at the end of text', function() {
1344                 
1345                 var xmlIn = '<header>    Some text ended with white space \
1346                 \
1347                 <span class="uri">Some text</span> some text\
1348             \
1349             </header>',
1350                     c = canvas.fromXML(xmlIn);
1351
1352             var xmlOut = c.toXML();
1353             console.log(xmlOut);
1354             expect(xmlOut).to.equal(xmlIn);
1355             });
1356
1357             it('keeps white space around text node', function() {
1358                 var xmlIn = '<section>\
1359                 <header>header1</header>\
1360                 Some text surrounded by white space\
1361                 <header>header2</header>\
1362             </section>',
1363                     c = canvas.fromXML(xmlIn);
1364
1365                 var xmlOut = c.toXML();
1366                 expect(xmlOut).to.equal(xmlIn);
1367             });
1368
1369             it('keeps white space around text node - last node case', function() {
1370                 var xmlIn = '<section>\
1371                 <header>header</header>\
1372                     \
1373                 Some text surrounded by white space\
1374                     \
1375             </section>',
1376                     c = canvas.fromXML(xmlIn);
1377
1378                 var xmlOut = c.toXML();
1379                 expect(xmlOut).to.equal(xmlIn);
1380             });
1381
1382             it('keeps white space after detaching text element', function() {
1383                 var xmlIn = '<section><header>header</header>\n\
1384                     \n\
1385                 text1\n\
1386                     \n\
1387             </section>',
1388                     expectedXmlOut = '<section><header>header</header>\n\
1389                     \n\
1390                 \n\
1391                     \n\
1392             </section>',
1393                     c = canvas.fromXML(xmlIn),
1394                     children = c.doc().children(),
1395                     text = children[children.length-1];
1396                 
1397                 expect(text.getText()).to.equal('text1');
1398
1399                 text.detach();
1400
1401                 var xmlOut = c.toXML();
1402                 expect(xmlOut).to.equal(expectedXmlOut);
1403             });
1404
1405         })
1406     })
1407 });
1408
1409
1410 });