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