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 });