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
  17
  18     describe('ZWS', function() {
  19         var view, section, textElement;
  20
  21         beforeEach(function() {
  22             var c = canvas.fromXML('<section></section>');
  23
  24             section = c.doc();
  25             textElement = section.children()[0];
  26             view = c.view()[0];
  27             document.getElementsByTagName('body')[0].appendChild(view);
  28         });
  29
  30         afterEach(function() {
  31             view.parentNode.removeChild(view);
  32         });
  33
  34         var getTextContainerNode = function(textElement) {
  35             return textElement.dom().contents()[0];
  36         }
  37
  38         it('is set automatically on all empty DocumentTextElements', function() {
  39             expect(getTextContainerNode(textElement).data).to.equal(utils.unicode.ZWS);
  40
  41             var header = section.append({tag: 'header'}),
  42                 newText = header.append({text: ''}),
  43                 textNode = getTextContainerNode(textElement);
  44
  45             expect(textNode.data).to.equal(utils.unicode.ZWS);
  46         });
  47
  48         it('is added automatically when whole text gets deleted', function() {
  49             getTextContainerNode(textElement).data = '';
  50
  51             window.setTimeout(function() {
  52                 expect(getTextContainerNode(textElement).data).to.equal(utils.unicode.ZWS);
  53             }, 0)
  54
  55             var header = section.append({tag: 'header'}),
  56                 newText = header.append({text: 'Alice'}),
  57                 textNode = getTextContainerNode(newText);
  58
  59             expect(textNode.data).to.have.length('Alice'.length);
  60             textNode.data = '';
  61
  62             window.setTimeout(function() {
  63                 expect(textNode.data).to.equal(utils.unicode.ZWS);
  64             }, 0)
  65         });
  66     });
  67
  68     describe('Internal HTML representation of a DocumentNodeElement', function() {
  69         it('is always a div tag', function() {
  70             ['section', 'header', 'span', 'aside', 'figure'].forEach(function(tagName) {
  71                 var dom = canvas.fromXML('<' + tagName + '></' + tagName + '>').doc().dom();
  72                 expect(dom.prop('tagName')).to.equal('DIV', tagName + ' is represented as div');
  73             });
  74         });
  75         it('has wlxml tag put into wlxml-tag attribute of its internal container', function() {
  76             var dom = canvas.fromXML('<section></section>').doc().dom();
  77             expect(dom.children('[document-element-content]').attr('wlxml-tag')).to.equal('section');
  78         });
  79         it('has wlxml class put into wlxml-class attribute of its internal containr, dots replaced with dashes', function() {
  80             var dom = canvas.fromXML('<section class="some.class"></section>').doc().dom();
  81             expect(dom.children('[document-element-content]').attr('wlxml-class')).to.equal('some-class');
  82         });
  83     });
  84
  85     describe('Internal HTML representation of a DocumentTextElement', function() {
  86         it('is text node wrapped in a div with document-text-element attribute set', function() {
  87             var dom = canvas.fromXML('<section>Alice</section>').doc().children()[0].dom();
  88             expect(dom.prop('tagName')).to.equal('DIV');
  89             expect(dom.attr('document-text-element')).to.equal('');
  90             expect(dom.contents().length).to.equal(1);
  91             expect(dom.contents()[0].nodeType).to.equal(Node.TEXT_NODE);
  92             expect($(dom.contents()[0]).text()).to.equal('Alice');
  93         });
  94     });
  95
  96     describe('basic properties', function() {
  97         it('renders empty document when canvas created from empty XML', function() {
  98             var c = canvas.fromXML('');
  99             expect(c.doc()).to.equal(null);
 100         });
 101
 102         it('gives access to its document root node', function() {
 103             var c = canvas.fromXML('<section></section>');
 104             expect(c.doc().getWlxmlTag()).to.equal('section');
 105         });
 106
 107         describe('root element', function() {
 108             it('has no parent', function() {
 109                 var c = canvas.fromXML('<section></section>');
 110                 expect(c.doc().parent()).to.be.null;
 111             });
 112         });
 113
 114         describe('DocumentTextElement', function() {
 115             it('can have its content set', function() {
 116                 var c = canvas.fromXML('<section>Alice</section>'),
 117                     root = c.doc(),
 118                     text = root.children()[0];
 119
 120                 text.setText('a cat');
 121                 expect(root.children()[0].getText()).to.equal('a cat');
 122             });
 123         });
 124
 125         describe('DocumentNodeElement', function() {
 126             it('knows index of its child', function() {
 127                 var c = canvas.fromXML('<section><div></div><header></header><span></span></section>'),
 128                     root = c.doc(),
 129                     child = root.children()[1];
 130                 expect(root.childIndex(child)).to.equal(1);
 131             });
 132
 133             it('knows WLXML tag it renders', function(){
 134                 var c = canvas.fromXML('<section></section>'),
 135                     section = c.doc();
 136                 expect(section.getWlxmlTag()).to.equal('section', 'initial tag is section');
 137                 section.setWlxmlTag('header');
 138                 expect(section.getWlxmlTag()).to.equal('header', 'tag is changed to header');
 139             });
 140
 141             it('knows WLXML class of a WLXML tag it renders', function(){
 142                 var c = canvas.fromXML('<section class="some.class.A"></section>'),
 143                     section = c.doc();
 144                 expect(section.getWlxmlClass()).to.equal('some.class.A');
 145                 section.setWlxmlClass('some.class.B');
 146                 expect(section.getWlxmlClass()).to.equal('some.class.B');
 147                 section.setWlxmlClass(null);
 148                 expect(section.getWlxmlClass()).to.be.undefined;
 149             });
 150
 151
 152
 153             describe('element has meta attributes', function() {
 154                 it('can change its meta attributes', function() {
 155                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
 156                     span = c.doc().children()[0];
 157
 158                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
 159                     span.setWlxmlMetaAttr('uri', 'otheruri');
 160                     expect(span.getWlxmlMetaAttr('uri')).to.equal('otheruri');
 161                 });
 162
 163                 it('changes its meta attributes with class change', function() {
 164                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
 165                     span = c.doc().children()[0];
 166
 167                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
 168                     span.setWlxmlClass('author');
 169                     expect(span.getWlxmlMetaAttr('uri')).to.be.undefined;
 170                 });
 171
 172                 it('keeps meta attribute value on class change if a new class has this attribute', function() {
 173                     var c = canvas.fromXML('<section><span class="uri" meta-uri="someuri"></span></section>'),
 174                     span = c.doc().children()[0];
 175                     span.setWlxmlClass('uri.some.subclass');
 176                     expect(span.getWlxmlMetaAttr('uri')).to.equal('someuri');
 177                 });
 178             });
 179         });
 180
 181         it('returns DocumentNodeElement instance from HTMLElement', function() {
 182             var c = canvas.fromXML('<section></section>'),
 183                 htmlElement = c.doc().dom().get(0),
 184                 element = c.getDocumentElement(htmlElement);
 185             expect(element).to.be.instanceOf(documentElement.DocumentNodeElement);
 186             expect(element.sameNode(c.doc()));
 187         });
 188
 189         it('returns DocumentTextElement instance from Text Node', function() {
 190             var c = canvas.fromXML('<section>Alice</section>'),
 191                 aliceElement = c.doc().children()[0],
 192                 textNode = aliceElement.dom().contents()[0],
 193                 element = c.getDocumentElement(textNode);
 194
 195             expect(textNode.nodeType).to.equal(Node.TEXT_NODE, 'text node selected');
 196             expect($(textNode).text()).to.equal('Alice');
 197
 198             expect(element).to.be.instanceOf(documentElement.DocumentTextElement);
 199             expect(element.sameNode(c.doc().children()[0]));
 200         });
 201     });
 202
 203
 204
 205     describe('document representation api', function() {
 206         describe('document root element', function() {
 207             var c = canvas.fromXML('<section></section>');
 208             it('exists', function() {
 209                 expect(c.doc()).to.be.instanceOf(documentElement.DocumentElement);
 210             });
 211             it('is of type DocumentNodeElement', function() {
 212                 expect(c.doc()).to.be.instanceOf(documentElement.DocumentNodeElement);
 213             });
 214         });
 215
 216         describe('DocumentElements comparison', function() {
 217             it('reports dwo DocumentElements to be the same when they represent the same wlxml document element', function() {
 218                 var c = canvas.fromXML('<section><div></div><div></div></section>'),
 219                     first_div1 = c.doc().children()[0],
 220                     first_div2 = c.doc().children()[0],
 221                     second_div = c.doc().children()[1];
 222                 expect(first_div1.sameNode(first_div1)).to.be.true;
 223                 expect(first_div1.sameNode(first_div2)).to.be.true;
 224                 expect(first_div1.sameNode(second_div)).to.be.false;
 225             });
 226         });
 227
 228         describe('traversing', function() {
 229             it('reports element nodes', function() {
 230                 var c = canvas.fromXML('<section><div></div></section>'),
 231                     children = c.doc().children();
 232                 expect(children.length).to.equal(1);
 233                 expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
 234
 235                 c = canvas.fromXML('<section><div></div><div></div></section>'),
 236                     children = c.doc().children();
 237                 expect(children.length).to.equal(2);
 238                 expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
 239                 expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
 240             });
 241
 242             it('reports text nodes', function() {
 243                 var c = canvas.fromXML('<section>Alice</section>'),
 244                     children = c.doc().children();
 245                 expect(children.length).to.equal(1);
 246                 expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 247             });
 248
 249             describe('accessing parents', function() {
 250                 it('returns DocumentNodeElement representing parent in wlxml document as DocumentNodeElement parent', function() {
 251                     var c = canvas.fromXML('<section><div></div></section>'),
 252                         div = c.doc().children()[0];
 253                     expect(div.parent().sameNode(c.doc())).to.be.true;
 254                 });
 255                 it('returns DocumentNodeElement representing parent in wlxml document as DocumentTextElement parent', function() {
 256                     var c = canvas.fromXML('<section>Alice</section>'),
 257                         text = c.doc().children()[0];
 258                     expect(text.parent().sameNode(c.doc())).to.be.true;
 259                 });
 260             });
 261
 262             describe('accessing sibling parents of two elements', function() {
 263                 it('returns elements themself if they have direct common parent', function() {
 264                     var c = canvas.fromXML('<section>\
 265                         <div>\
 266                             <div>A</div>\
 267                             <div>B</div>\
 268                         </div>\
 269                     </section>'),
 270                         section = c.doc(),
 271                         wrappingDiv = c.doc().children()[0],
 272                         divA = wrappingDiv.children()[0],
 273                         divB = wrappingDiv.children()[1];
 274
 275                     var siblingParents = c.getSiblingParents({element1: divA, element2: divB});
 276
 277                     expect(siblingParents.element1.sameNode(divA)).to.equal(true, 'divA');
 278                     expect(siblingParents.element2.sameNode(divB)).to.equal(true, 'divB');
 279                 });
 280
 281                 it('returns sibling parents - example 1', function() {
 282                     var c = canvas.fromXML('<section>Alice <span>has a cat</span></section>'),
 283                         section = c.doc(),
 284                         aliceText = section.children()[0],
 285                         span = section.children()[1],
 286                         spanText = span.children()[0];
 287
 288                     var siblingParents = c.getSiblingParents({element1: aliceText, element2: spanText});
 289
 290                     expect(siblingParents.element1.sameNode(aliceText)).to.equal(true, 'aliceText');
 291                     expect(siblingParents.element2.sameNode(span)).to.equal(true, 'span');
 292                 });
 293             })
 294
 295             describe('free text handling', function() {
 296                     it('sees free text', function() {
 297                         var c = canvas.fromXML('<section>Alice <span>has</span> a cat</section>'),
 298                             children = c.doc().children();
 299                         expect(children.length).to.equal(3);
 300                         expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 301                         expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
 302                         expect(children[2]).to.be.instanceOf(documentElement.DocumentTextElement);
 303                     });
 304             });
 305
 306             describe('empty nodes handling', function() {
 307                 it('says empty element node from XML source has one empty DocumentTextElement', function() {
 308                     var c = canvas.fromXML('<section></section>');
 309                     expect(c.doc().children()).to.have.length(1);
 310                     expect(c.doc().children()[0].getText()).to.equal('');
 311                 });
 312
 313                 it('allows creation of an empty element node', function() {
 314                     var c = canvas.fromXML('<section></section>'),
 315                         section = c.doc(),
 316                         header = section.append({tag: 'header'});
 317                     expect(header.children()).to.have.length(0);
 318                 });
 319             });
 320
 321             describe('white characters handling', function() {
 322
 323                 it('says element node with one space has one DocumentTextElement', function() {
 324                     var c = canvas.fromXML('<section> </section>');
 325                     expect(c.doc().children().length).to.equal(1);
 326                     expect(c.doc().children()[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 327                     expect(c.doc().children()[0].getText()).to.equal(' ');
 328                 });
 329                 it('ignores white space surrounding block elements', function() {
 330                     var c = canvas.fromXML('<section> <div></div> </section>');
 331                     var children = c.doc().children();
 332                     expect(children.length).to.equal(1);
 333                     expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
 334                 });
 335                 it('ignores white space between block elements', function() {
 336                     var c = canvas.fromXML('<section><div></div> <div></div></section>');
 337                     var children = c.doc().children();
 338                     expect(children.length === 2);
 339                     [0,1].forEach(function(idx) {
 340                         expect(children[idx]).to.be.instanceOf(documentElement.DocumentNodeElement);
 341                     });
 342                 });
 343
 344                 it('trims white space from the beginning and the end of the block elements', function() {
 345                     var c = canvas.fromXML('<section> Alice <span>has</span> a cat </section>');
 346                     expect(c.doc().children()[0].getText()).to.equal('Alice ');
 347                     expect(c.doc().children()[2].getText()).to.equal(' a cat');
 348                 });
 349
 350                 it('normalizes string of white characters to one space at the inline element boundries', function() {
 351                     var c = canvas.fromXML('<span>   Alice has a cat   </span>');
 352                     expect(c.doc().children()[0].getText()).to.equal(' Alice has a cat ');
 353                 });
 354
 355                 it('normalizes string of white characters to one space before inline element', function() {
 356                     var c = canvas.fromXML('<div>Alice has  <span>a cat</span></div>');
 357                     expect(c.doc().children()[0].getText()).to.equal('Alice has ');
 358                 });
 359
 360                 it('normalizes string of white characters to one space after inline element', function() {
 361                     var c = canvas.fromXML('<div>Alice has <span>a</span>  cat</div>');
 362                     expect(c.doc().children()[2].getText()).to.equal(' cat');
 363                 });
 364             });
 365
 366             describe('getting vertically first text element', function() {
 367                 it('returns the first child if it\'s text element, ignores metadata', function() {
 368                     var c = canvas.fromXML('<section><metadata><dc:author>author</dc:author></metadata>Alice<div>has</div>a cat</section>'),
 369                         first = c.doc().getVerticallyFirstTextElement();
 370
 371                     expect(first.sameNode(c.doc().children()[1])).to.be.true;
 372                 });
 373
 374                 it('looks recursively inside node elements if they precede text element', function() {
 375                     var c = canvas.fromXML('\
 376                             <section>\
 377                                 <div>\
 378                                     <div>\
 379                                         Alice\
 380                                     </div>\
 381                                 </div>\
 382                                 Some text\
 383                             </section>'),
 384                         textAlice = c.doc().children()[0].children()[0].children()[0],
 385                         first = c.doc().getVerticallyFirstTextElement();
 386
 387                     expect(textAlice).to.be.instanceOf(documentElement.DocumentTextElement);
 388                     expect(first.sameNode(textAlice)).to.be.true;
 389                 });
 390             });
 391         });
 392
 393         describe('manipulation api', function() {
 394
 395             describe('Basic Element inserting', function() {
 396                 it('can put new NodeElement at the end', function() {
 397                     var c = canvas.fromXML('<section><div></div></section>'),
 398                         appended = c.doc().append({tag: 'header', klass: 'some.class'}),
 399                         children = c.doc().children();
 400
 401                     expect(children.length).to.equal(2);
 402                     expect(children[1].sameNode(appended)).to.be.true;
 403                 });
 404
 405                 it('can put new TextElement at the end', function() {
 406                     var c = canvas.fromXML('<section><div><div></section>'),
 407                         appended = c.doc().append({text: 'Alice'}),
 408                         children = c.doc().children();
 409
 410                     expect(children.length).to.equal(2);
 411                     expect(children[1].sameNode(appended)).to.be.true;
 412                     expect(children[1].getText()).to.equal('Alice');
 413                 });
 414
 415                 it('can put new NodeElement at the beginning', function() {
 416                     var c = canvas.fromXML('<section><div></div></section>'),
 417                         prepended = c.doc().prepend({tag: 'header', klass: 'some.class'}),
 418                         children = c.doc().children();
 419
 420                     expect(children).to.have.length(2);
 421                     expect(children[0].sameNode(prepended)).to.be.true;
 422                 });
 423
 424                 it('can put new TextElement at the beginning', function() {
 425                     var c = canvas.fromXML('<section><div></div></section>'),
 426                         prepended = c.doc().prepend({text: 'Alice'}),
 427                         children = c.doc().children();
 428
 429                     expect(children).to.have.length(2)
 430                     expect(children[0].sameNode(prepended)).to.be.true;
 431                     expect(children[0].getText()).to.equal('Alice');
 432                 });
 433
 434                 it('can put new NodeElement after another NodeElement', function() {
 435                     var c = canvas.fromXML('<section><div></div></section>'),
 436                         div = c.doc().children()[0],
 437                         added = div.after({tag: 'header', klass: 'some.class'}),
 438                         children = c.doc().children();
 439                     expect(children.length).to.equal(2);
 440                     expect(children[1].sameNode(added)).to.be.true;
 441                 });
 442
 443                 it('can put new Nodeelement before another element', function() {
 444                     var c = canvas.fromXML('<section><div></div></section>'),
 445                         div = c.doc().children()[0],
 446                         added = div.before({tag: 'header', klass: 'some.class'}),
 447                         children = c.doc().children();
 448                     expect(children.length).to.equal(2);
 449                     expect(children[0].sameNode(added)).to.be.true;
 450                 });
 451
 452                 it('can put new DocumentNodeElement after DocumentTextElement', function() {
 453                     var c = canvas.fromXML('<section>Alice</section>'),
 454                         text = c.doc().children()[0],
 455                         added = text.after({tag: 'p'}),
 456                         children = c.doc().children();
 457
 458                     expect(children.length).to.equal(2);
 459                     expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 460                     expect(children[0].getText()).to.equal('Alice');
 461                     expect(children[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
 462                     expect(children[1].sameNode(added)).to.be.true;
 463                 });
 464                 it('can put new DocumentNodeElement before DocumentTextElement', function() {
 465                     var c = canvas.fromXML('<section>Alice</section>'),
 466                         text = c.doc().children()[0],
 467                         added = text.before({tag: 'p'}),
 468                         children = c.doc().children();
 469
 470                     expect(children.length).to.equal(2);
 471                     expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
 472                     expect(children[0].sameNode(added)).to.be.true;
 473                     expect(children[1]).to.be.instanceOf(documentElement.DocumentTextElement);
 474                     expect(children[1].getText()).to.equal('Alice');
 475                 });
 476
 477                 it('can divide DocumentTextElement with a new DocumentNodeElement', function() {
 478                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
 479                         section = c.doc(),
 480                         text = section.children()[0];
 481
 482                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 5}),
 483                         sectionChildren = section.children(),
 484                         lhsText = sectionChildren[0],
 485                         rhsText = sectionChildren[2];
 486
 487                     expect(lhsText.getText()).to.equal('Alice');
 488                     expect(returned.sameNode(sectionChildren[1]));
 489                     expect(rhsText.getText()).to.equal(' has a cat');
 490                 });
 491
 492                 it('treats dividing DocumentTextElement at the very end as appending after it', function() {
 493                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
 494                         section = c.doc(),
 495                         text = section.children()[0];
 496
 497                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 15}),
 498                         sectionChildren = section.children(),
 499                         textElement = sectionChildren[0],
 500                         nodeElement = sectionChildren[1];
 501
 502                     expect(sectionChildren.length).to.equal(2);
 503                     expect(textElement.getText()).to.equal('Alice has a cat');
 504                     expect(returned.sameNode(nodeElement)).to.be.true;
 505                     expect(nodeElement.getWlxmlTag()).to.equal('aside');
 506                 });
 507
 508                 it('treats dividing DocumentTextElement at the very beginning as appending before it', function() {
 509                     var c = canvas.fromXML('<section>Alice has a cat</section>'),
 510                         section = c.doc(),
 511                         text = section.children()[0];
 512
 513                     var returned = text.divide({tag: 'aside', klass: 'footnote', offset: 0}),
 514                         sectionChildren = section.children(),
 515                         nodeElement = sectionChildren[0],
 516                         textElement = sectionChildren[1];
 517
 518                     expect(sectionChildren.length).to.equal(2);
 519                     expect(textElement.getText()).to.equal('Alice has a cat');
 520                     expect(returned.sameNode(nodeElement)).to.be.true;
 521                     expect(nodeElement.getWlxmlTag()).to.equal('aside');
 522                 });
 523             });
 524
 525             describe('Removing elements', function() {
 526                 it('merges left and right DocumentTextElement sibling of a detached DocumentNodeElement', function() {
 527                     var c = canvas.fromXML('<section>Alice<div>has</div>a cat</section>'),
 528                         section = c.doc(),
 529                         div = section.children()[1];
 530
 531                     div.detach();
 532
 533                     var sectionChildren = section.children(),
 534                         textElement = sectionChildren[0];
 535
 536                     expect(sectionChildren).to.have.length(1);
 537                     expect(textElement.getText()).to.equal('Alicea cat');
 538                 });
 539             });
 540
 541             describe('Splitting text', function() {
 542
 543                 it('splits DocumentTextElement\'s parent into two DocumentNodeElements of the same type', function() {
 544                     var c = canvas.fromXML('<section><header>Some header</header></section>'),
 545                         section = c.doc(),
 546                         text = section.children()[0].children()[0];
 547
 548                     var returnedValue = text.split({offset: 5});
 549                     expect(section.children().length).to.equal(2, 'section has two children');
 550
 551                     var header1 = section.children()[0];
 552                     var header2 = section.children()[1];
 553
 554                     expect(header1.getWlxmlTag()).to.equal('header', 'first section child represents wlxml header');
 555                     expect(header1.children().length).to.equal(1, 'first header has one text child');
 556                     expect(header1.children()[0].getText()).to.equal('Some ', 'first header has correct content');
 557                     expect(header2.getWlxmlTag()).to.equal('header', 'second section child represents wlxml header');
 558                     expect(header2.children().length).to.equal(1, 'second header has one text child');
 559                     expect(header2.children()[0].getText()).to.equal('header', 'second header has correct content');
 560
 561                     expect(returnedValue.first.sameNode(header1)).to.equal(true, 'first node returnde');
 562                     expect(returnedValue.second.sameNode(header2)).to.equal(true, 'second node returned');
 563                 });
 564
 565                 it('leaves empty copy of DocumentNodeElement if splitting at the very beginning', function() {
 566                         var c = canvas.fromXML('<section><header>Some header</header></section>'),
 567                         section = c.doc(),
 568                         text = section.children()[0].children()[0];
 569
 570                         text.split({offset: 0});
 571
 572                         var header1 = section.children()[0];
 573                         var header2 = section.children()[1];
 574
 575                         expect(header1.children().length).to.equal(0);
 576                         expect(header2.children()[0].getText()).to.equal('Some header');
 577                 });
 578
 579                 it('leaves empty copy of DocumentNodeElement if splitting at the very end', function() {
 580                         var c = canvas.fromXML('<section><header>Some header</header></section>'),
 581                         section = c.doc(),
 582                         text = section.children()[0].children()[0];
 583
 584                         text.split({offset: 11});
 585
 586                         var header1 = section.children()[0];
 587                         var header2 = section.children()[1];
 588
 589                         expect(header1.children()[0].getText()).to.equal('Some header');
 590                         expect(header2.children().length).to.equal(0);
 591                 });
 592
 593                 it('keeps DocumentTextElement\'s parent\'s children elements intact', function() {
 594                     var c = canvas.fromXML('\
 595                             <section>\
 596                                 <header>\
 597                                     A <span>fancy</span> and <span>nice</span> header\
 598                                 </header>\
 599                             </section>'),
 600                         section = c.doc(),
 601                         header = section.children()[0],
 602                         textAnd = header.children()[2];
 603
 604                     textAnd.split({offset: 2});
 605
 606                     var sectionChildren = section.children();
 607                     expect(sectionChildren.length).to.equal(2, 'Section has two children');
 608                     expect(sectionChildren[0].getWlxmlTag()).to.equal('header', 'First section element is a wlxml header');
 609                     expect(sectionChildren[1].getWlxmlTag()).to.equal('header', 'Second section element is a wlxml header');
 610
 611                     var firstHeaderChildren = sectionChildren[0].children();
 612                     expect(firstHeaderChildren.length).to.equal(3, 'First header has three children');
 613                     expect(firstHeaderChildren[0].getText()).to.equal('A ', 'First header starts with a text');
 614                     expect(firstHeaderChildren[1].getWlxmlTag()).to.equal('span', 'First header has span in the middle');
 615                     expect(firstHeaderChildren[2].getText()).to.equal(' a', 'First header ends with text');
 616
 617                     var secondHeaderChildren = sectionChildren[1].children();
 618                     expect(secondHeaderChildren.length).to.equal(3, 'Second header has three children');
 619                     expect(secondHeaderChildren[0].getText()).to.equal('nd ', 'Second header starts with text');
 620                     expect(secondHeaderChildren[1].getWlxmlTag()).to.equal('span', 'Second header has span in the middle');
 621                     expect(secondHeaderChildren[2].getText()).to.equal(' header', 'Second header ends with text');
 622                 });
 623             });
 624
 625             describe('wrapping', function() {
 626                 it('wraps DocumentNodeElement', function() {
 627                     var c = canvas.fromXML('<section><div></div></section>'),
 628                         div = c.doc().children()[0];
 629
 630                     var returned = div.wrapWithNodeElement({tag: 'header', klass: 'some.class'}),
 631                         parent = div.parent(),
 632                         parent2 = c.doc().children()[0];
 633
 634                     expect(returned.sameNode(parent)).to.be.true;
 635                     expect(returned.sameNode(parent2)).to.be.true;
 636                     expect(returned.getWlxmlTag()).to.equal('header');
 637                     expect(returned.getWlxmlClass()).to.equal('some.class');
 638                 });
 639                 it('wraps DocumentTextElement', function() {
 640                     var c = canvas.fromXML('<section>Alice</section>'),
 641                         text = c.doc().children()[0];
 642
 643                     var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class'}),
 644                         parent = text.parent(),
 645                         parent2 = c.doc().children()[0];
 646
 647                     expect(returned.sameNode(parent)).to.be.true;
 648                     expect(returned.sameNode(parent2)).to.be.true;
 649                     expect(returned.getWlxmlTag()).to.equal('header');
 650                     expect(returned.getWlxmlClass()).to.equal('some.class');
 651                 });
 652
 653                 describe('wrapping part of DocumentTextElement', function() {
 654                     [{start: 5, end: 12}, {start: 12, end: 5}].forEach(function(offsets) {
 655                         it('wraps in the middle ' + offsets.start + '/' + offsets.end, function() {
 656                             var c = canvas.fromXML('<section>Alice has a cat</section>'),
 657                                 text = c.doc().children()[0];
 658
 659                             var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class', start: offsets.start, end: offsets.end}),
 660                                 children = c.doc().children();
 661
 662                             expect(children.length).to.equal(3);
 663
 664                             expect(children[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 665                             expect(children[0].getText()).to.equal('Alice');
 666
 667                             expect(children[1].sameNode(returned)).to.be.true;
 668                             expect(returned.getWlxmlTag()).to.equal('header');
 669                             expect(returned.getWlxmlClass()).to.equal('some.class');
 670                             expect(children[1].children().length).to.equal(1);
 671                             expect(children[1].children()[0].getText()).to.equal(' has a ');
 672
 673                             expect(children[2]).to.be.instanceOf(documentElement.DocumentTextElement);
 674                             expect(children[2].getText()).to.equal('cat');
 675                         });
 676                     });
 677
 678                     it('wraps whole text inside DocumentTextElement if offsets span entire content', function() {
 679                          var c = canvas.fromXML('<section>Alice has a cat</section>'),
 680                              text = c.doc().children()[0];
 681
 682                          var returned = text.wrapWithNodeElement({tag: 'header', klass: 'some.class', start: 0, end: 15}),
 683                              children = c.doc().children();
 684
 685                          expect(children.length).to.equal(1);
 686                          expect(children[0]).to.be.instanceOf(documentElement.DocumentNodeElement);
 687                          expect(children[0].children()[0].getText()).to.equal('Alice has a cat');
 688                     });
 689                 });
 690
 691                 it('wraps text spanning multiple sibling DocumentTextNodes', function() {
 692                     var c = canvas.fromXML('<section>Alice has a <span>small</span> cat</section>'),
 693                         section = c.doc(),
 694                         wrapper = c.wrapText({
 695                             inside: section,
 696                             _with: {tag: 'span', klass: 'some.class'},
 697                             offsetStart: 6,
 698                             offsetEnd: 4,
 699                             textNodeIdx: [0,2]
 700                         });
 701
 702                     expect(section.children().length).to.equal(2);
 703                     expect(section.children()[0]).to.be.instanceOf(documentElement.DocumentTextElement);
 704                     expect(section.children()[0].getText()).to.equal('Alice ');
 705
 706                     var wrapper2 = section.children()[1];
 707                     expect(wrapper2.sameNode(wrapper)).to.be.true;
 708
 709                     var wrapperChildren = wrapper.children();
 710                     expect(wrapperChildren.length).to.equal(3);
 711                     expect(wrapperChildren[0].getText()).to.equal('has a ');
 712
 713                     expect(wrapperChildren[1]).to.be.instanceOf(documentElement.DocumentNodeElement);
 714                     expect(wrapperChildren[1].children().length).to.equal(1);
 715                     expect(wrapperChildren[1].children()[0].getText()).to.equal('small');
 716
 717                     expect(wrapperChildren[2].getText()).to.equal(' cat');
 718                 });
 719
 720                 it('wraps multiple sibling Elements', function() {
 721                     var c = canvas.fromXML('<section>Alice<div>has</div><div>a cat</div></section>'),
 722                         section = c.doc(),
 723                         aliceText = section.children()[0],
 724                         firstDiv = section.children()[1],
 725                         lastDiv = section.children()[section.children().length -1];
 726
 727                     var returned = c.wrapElements({
 728                             element1: aliceText,
 729                             element2: lastDiv,
 730                             _with: {tag: 'header'}
 731                         });
 732
 733                     var sectionChildren = section.children(),
 734                         header = sectionChildren[0],
 735                         headerChildren = header.children();
 736
 737                     expect(sectionChildren).to.have.length(1);
 738                     expect(header.sameNode(returned)).to.equal(true, 'wrapper returned');
 739                     expect(headerChildren).to.have.length(3);
 740                     expect(headerChildren[0].sameNode(aliceText)).to.equal(true, 'first node wrapped');
 741                     expect(headerChildren[1].sameNode(firstDiv)).to.equal(true, 'second node wrapped');
 742                     expect(headerChildren[2].sameNode(lastDiv)).to.equal(true, 'third node wrapped');
 743                 });
 744                 it('wraps multiple sibling Elements - middle case', function() {
 745                     var c = canvas.fromXML('<section><div></div>div></div><div></div><div></div></section>'),
 746                         section = c.doc(),
 747                         div1 = section.children()[0],
 748                         div2 = section.children()[1],
 749                         div3 = section.children()[2],
 750                         div4 = section.children()[3];
 751
 752                     var returned = c.wrapElements({
 753                             element1: div2,
 754                             element2: div3,
 755                             _with: {tag: 'header'}
 756                         });
 757
 758                     var sectionChildren = section.children(),
 759                         header = sectionChildren[1],
 760                         headerChildren = header.children();
 761
 762                     expect(sectionChildren).to.have.length(3);
 763                     expect(headerChildren).to.have.length(2);
 764                     expect(headerChildren[0].sameNode(div2)).to.equal(true, 'first node wrapped');
 765                     expect(headerChildren[1].sameNode(div3)).to.equal(true, 'second node wrapped');
 766                 });
 767             });
 768
 769             describe('unwrapping DocumentTextElement from its parent DocumentNodeElement if it\'s its only child', function() {
 770                 it('unwraps text element from its parent and stays between its old parent siblings', function() {
 771                     var c = canvas.fromXML('<section><div>Alice</div><div>has</div><div>a cat</div></section>'),
 772                         section = c.doc(),
 773                         sectionChildren = section.children(),
 774                         divAlice = sectionChildren[0],
 775                         divHas = sectionChildren[1],
 776                         textHas = divHas.children()[0],
 777                         divCat = sectionChildren[2];
 778
 779                     var newTextContainer = textHas.unwrap(),
 780                         sectionChildren = section.children();
 781
 782                     expect(sectionChildren[0].sameNode(divAlice)).to.equal(true, 'divAlice ok');
 783                     expect(newTextContainer.sameNode(section)).to.equal(true, 'unwrap returns new text parent DocumentNodeElement');
 784                     expect(sectionChildren[1].getText()).to.equal('has');
 785                     expect(sectionChildren[2].sameNode(divCat)).to.equal(true, 'divCat ok');
 786
 787                 });
 788                 it('unwraps and join with its old parent adjacent text elements ', function() {
 789                     var c = canvas.fromXML('<section>Alice <span>has a</span> cat</section>'),
 790                     section = c.doc(),
 791                     text = section.children()[1].children()[0];
 792
 793                     var newTextContainer = text.unwrap();
 794
 795                     expect(section.children().length).to.equal(1, 'section has one child');
 796                     expect(section.children()[0].getText()).to.equal('Alice has a cat');
 797                     expect(newTextContainer.sameNode(c.doc())).to.equal(true, 'unwrap returns new text parent DocumentNodeElement');
 798                 });
 799
 800                 it('unwraps text element from its parent - first child case', function() {
 801                     var c = canvas.fromXML('<section><span class="uri">Some</span>text</section>'),
 802                         section = c.doc(),
 803                         span = section.children()[0];
 804
 805                     span.children()[0].unwrap();
 806
 807                     var sectionChildren = section.children();
 808
 809                     expect(sectionChildren).to.have.length(1);
 810                     expect(sectionChildren[0].getText()).to.equal('Sometext');
 811                 });
 812             });
 813
 814             describe('unwrapping the whole content of a DocumentNodeElement', function() {
 815                 it('removes a DocumentNodeElement but keeps its content', function() {
 816                     var c = canvas.fromXML('<section><div>Alice has<span>a</span> cat</div></section>'),
 817                         section = c.doc(),
 818                         div = c.doc().children()[0],
 819                         span = div.children()[1];
 820
 821                     var range = div.unwrapContents(),
 822                         sectionChildren = section.children();
 823
 824                     expect(sectionChildren).to.have.length(3);
 825                     expect(sectionChildren[0].getText()).to.equal('Alice has');
 826                     expect(sectionChildren[1].sameNode(span)).to.equal(true, 'span ok');
 827                     expect(sectionChildren[2].getText()).to.equal(' cat');
 828
 829                     expect(range.element1.sameNode(sectionChildren[0])).to.equal(true, 'range start ok');
 830                     expect(range.element2.sameNode(sectionChildren[2])).to.equal(true, 'range end ok');
 831                 });
 832                 it('merges text elements on the boundries', function() {
 833                     var c = canvas.fromXML('<section>Alice<div>has a <span>cat</span>!</div>!!</section>'),
 834                         section = c.doc(),
 835                         div = c.doc().children()[1],
 836                         span = div.children()[1];
 837
 838                     var range = div.unwrapContents(),
 839                         sectionChildren = section.children();
 840
 841                     expect(sectionChildren).to.have.length(3);
 842                     expect(sectionChildren[0].getText()).to.equal('Alicehas a ');
 843                     expect(sectionChildren[1].sameNode(span)).to.equal(true, 'span ok');
 844                     expect(sectionChildren[2].getText()).to.equal('!!!');
 845
 846                     expect(range.element1.sameNode(sectionChildren[0])).to.equal(true, 'range start ok');
 847                     expect(range.element2.sameNode(sectionChildren[2])).to.equal(true, 'range end ok');
 848                 });
 849             });
 850
 851         });
 852
 853         describe('Lists api', function() {
 854             describe('creating lists', function() {
 855                 it('allows creation of a list from existing sibling DocumentElements', function() {
 856                     var c = canvas.fromXML('\
 857                         <section>\
 858                             Alice\
 859                             <div>has</div>\
 860                             a\
 861                             <div>cat</div>\
 862                         </section>'),
 863                         section = c.doc(),
 864                         textHas = section.children()[1],
 865                         divA = section.children()[2]
 866
 867                     c.list.create({element1: textHas, element2: divA});
 868
 869                     expect(section.children().length).to.equal(3, 'section has three child elements');
 870
 871                     var child1 = section.children()[0],
 872                         list = section.children()[1],
 873                         child3 = section.children()[2];
 874
 875                     expect(child1.getText()).to.equal('Alice');
 876                     expect(list.is('list')).to.equal(true, 'second child is a list');
 877                     expect(list.children().length).to.equal(2, 'list contains two elements');
 878                     list.children().forEach(function(child) {
 879                         expect(child.getWlxmlClass()).to.equal('item', 'list childs have wlxml class of item');
 880                     });
 881                     expect(child3.children()[0].getText()).to.equal('cat');
 882                 });
 883
 884                 it('allows creating nested list from existing sibling list items', function() {
 885                     var c = canvas.fromXML('\
 886                         <section>\
 887                             <div class="list-items">\
 888                                 <div class="item">A</div>\
 889                                 <div class="item">B</div>\
 890                                 <div class="item">C</div>\
 891                                 <div class="item">D</div>\
 892                             </div>\
 893                         </section>'),
 894                         outerList = c.doc().children()[0],
 895                         itemB = outerList.children()[1],
 896                         itemC = outerList.children()[2];
 897
 898
 899                         c.list.create({element1: itemB, element2: itemC});
 900
 901                     var outerListItems = outerList.children(),
 902                         innerList = outerListItems[1].children()[0],
 903                         innerListItems = innerList.children();
 904
 905                     expect(outerListItems.length).to.equal(3, 'outer list has three items');
 906                     expect(outerListItems[0].children()[0].getText()).to.equal('A', 'first outer item ok');
 907                     expect(outerListItems[1].getWlxmlClass()).to.equal('item', 'inner list is wrapped by item element');
 908
 909                     expect(innerList.is('list')).to.equal(true, 'inner list created');
 910                     expect(innerListItems.length).to.equal(2, 'inner list has two items');
 911                     expect(innerListItems[0].children()[0].getText()).to.equal('B', 'first inner item ok');
 912                     expect(innerListItems[1].children()[0].getText()).to.equal('C', 'second inner item ok');
 913
 914                     expect(outerListItems[2].children()[0].getText()).to.equal('D', 'last outer item ok');
 915
 916                 });
 917
 918             });
 919
 920             describe('extracting list items', function() {
 921                 it('creates two lists with extracted items in the middle if extracting from the middle of the list', function() {
 922                     var c = canvas.fromXML('\
 923                         <section>\
 924                             <div class="list.items">\
 925                                 <div class="item">0</div>\
 926                                 <div class="item">1</div>\
 927                                 <div class="item">2</div>\
 928                                 <div class="item">3</div>\
 929                             </div>\
 930                         </section>'),
 931                         list = c.doc().children()[0],
 932                         item1 = list.children()[1],
 933                         item2 = list.children()[2];
 934
 935                     c.list.extractItems({element1: item1, element2: item2});
 936
 937                     var section = c.doc(),
 938                         list1 = section.children()[0],
 939                         oldItem1 = section.children()[1],
 940                         oldItem2 = section.children()[2],
 941                         list2 = section.children()[3];
 942
 943                     expect(section.children().length).to.equal(4, 'section contains four children');
 944
 945                     expect(list1.is('list')).to.equal(true, 'first section child is a list');
 946                     expect(list1.children().length).to.equal(1, 'first list has one child');
 947                     expect(list1.children()[0].children()[0].getText()).to.equal('0', 'first item of the first list is a first item of the original list');
 948
 949                     expect(oldItem1.children()[0].getText()).to.equal('1', 'first item got extracted');
 950                     expect(oldItem1.getWlxmlClass() === undefined).to.equal(true, 'first extracted element has no wlxml class');
 951
 952                     expect(oldItem2.children()[0].getText()).to.equal('2', 'second item got extracted');
 953                     expect(oldItem2.getWlxmlClass() === undefined).to.equal(true, 'second extracted element has no wlxml class');
 954
 955                     expect(list2.is('list')).to.equal(true, 'last section child is a list');
 956                     expect(list2.children().length).to.equal(1, 'second list has one child');
 957                     expect(list2.children()[0].children()[0].getText()).to.equal('3', 'first item of the second list is a last item of the original list');
 958                 });
 959
 960                 it('puts extracted items above the list if starting item is the first one', function() {
 961                     var c = canvas.fromXML('\
 962                         <section>\
 963                             <div class="list.items">\
 964                                 <div class="item">0</div>\
 965                                 <div class="item">1</div>\
 966                                 <div class="item">2</div>\
 967                             </div>\
 968                         </section>'),
 969                         list = c.doc().children()[0],
 970                         item1 = list.children()[0],
 971                         item2 = list.children()[1],
 972                         item3 = list.children()[2];
 973
 974                     c.list.extractItems({element1: item1, element2: item2});
 975
 976                     var section = c.doc(),
 977                         oldItem1 = section.children()[0],
 978                         oldItem2 = section.children()[1],
 979                         newList = section.children()[2];
 980
 981                     expect(section.children().length).to.equal(3, 'section has three children');
 982                     expect(oldItem1.children()[0].getText()).to.equal('0', 'first item extracted');
 983                     expect(oldItem2.children()[0].getText()).to.equal('1', 'second item extracted');
 984                     expect(newList.is('list')).to.equal(true, 'list lies below extracted item');
 985                     expect(newList.children().length).to.equal(1, 'list has now one child');
 986                 });
 987
 988                 it('puts extracted items below the list if ending item is the last one', function() {
 989                     var c = canvas.fromXML('\
 990                         <section>\
 991                             <div class="list.items">\
 992                                 <div class="item">0</div>\
 993                                 <div class="item">1</div>\
 994                                 <div class="item">2</div>\
 995                             </div>\
 996                         </section>'),
 997                         list = c.doc().children()[0],
 998                         item1 = list.children()[0],
 999                         item2 = list.children()[1],
1000                         item3 = list.children()[2];
1001
1002                     c.list.extractItems({element1: item2, element2: item3});
1003
1004                     var section = c.doc(),
1005                         oldItem1 = section.children()[1],
1006                         oldItem2 = section.children()[2],
1007                         newList = section.children()[0];
1008
1009                     expect(section.children().length).to.equal(3, 'section has three children');
1010                     expect(oldItem1.children()[0].getText()).to.equal('1', 'first item extracted');
1011                     expect(oldItem2.children()[0].getText()).to.equal('2', 'second item extracted');
1012                     expect(newList.is('list')).to.equal(true, 'list lies above extracted item');
1013                     expect(newList.children().length).to.equal(1, 'list has now one child');
1014                 });
1015
1016                 it('removes list if all its items are extracted', function() {
1017                     var c = canvas.fromXML('\
1018                         <section>\
1019                             <div class="list.items">\
1020                                 <div class="item">some item</div>\
1021                                 <div class="item">some item 2</div>\
1022                             </div>\
1023                         </section>'),
1024                         list = c.doc().children()[0],
1025                         item1 = list.children()[0],
1026                         item2 = list.children()[1];
1027
1028                     c.list.extractItems({element1: item1, element2: item2});
1029
1030                     var section = c.doc(),
1031                         list1 = section.children()[0],
1032                         oldItem1 = section.children()[0],
1033                         oldItem2 = section.children()[1];
1034
1035                     expect(section.children().length).to.equal(2, 'section contains two children');
1036                     expect(oldItem1.children()[0].getText()).to.equal('some item');
1037                     expect(oldItem2.children()[0].getText()).to.equal('some item 2');
1038                 });
1039
1040                 it('creates two lists with extracted items in the middle if extracting from the middle of the list - nested case' , function() {
1041                     var c = canvas.fromXML('\
1042                         <section>\
1043                             <div class="list.items">\
1044                                 <div class="item">0</div>\
1045                                 <div class="item">\
1046                                     <div class="list.items">\
1047                                         <div class="item">1.1</div>\
1048                                         <div class="item">1.2</div>\
1049                                         <div class="item">1.3</div>\
1050                                     </div>\
1051                                 </div>\
1052                                 <div class="item">2</div>\
1053                             </div>\
1054                         </section>'),
1055                         list = c.doc().children()[0],
1056                         nestedList = list.children()[1].children()[0],
1057                         nestedListItem = nestedList.children()[1];
1058
1059                     c.list.extractItems({element1: nestedListItem, element2: nestedListItem});
1060
1061                     var section = c.doc(),
1062                         list = section.children()[0],
1063                         item1 = list.children()[0],
1064                         item2 = list.children()[1], //
1065                         item3 = list.children()[2],
1066                         item4 = list.children()[3], //
1067                         item5 = list.children()[4],
1068                         nestedList1 = item2.children()[0],
1069                         nestedList2 = item4.children()[0];
1070
1071                     expect(list.children().length).to.equal(5, 'top list has five items');
1072
1073                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1074
1075                     expect(item2.getWlxmlClass()).to.equal('item', 'first nested list is still wrapped in item element');
1076                     expect(nestedList1.children().length).to.equal(1, 'first nested list is left with one child');
1077                     expect(nestedList1.children()[0].children()[0].getText()).to.equal('1.1', 'first nested list item left alone');
1078
1079                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1080
1081                     expect(item4.getWlxmlClass()).to.equal('item', 'second nested list is still wrapped in item element');
1082                     expect(nestedList2.children().length).to.equal(1, 'second nested list is left with one child');
1083                     expect(nestedList2.children()[0].children()[0].getText()).to.equal('1.3', 'second nested list item left alone');
1084
1085                     expect(item5.children()[0].getText()).to.equal('2', 'last item ok');
1086                 });
1087
1088                 it('puts extracted items below the list if ending item is the last one - nested case' , function() {
1089                     var c = canvas.fromXML('\
1090                         <section>\
1091                             <div class="list.items">\
1092                                 <div class="item">0</div>\
1093                                 <div class="item">\
1094                                     <div class="list.items">\
1095                                         <div class="item">1.1</div>\
1096                                         <div class="item">1.2</div>\
1097                                         <div class="item">1.3</div>\
1098                                     </div>\
1099                                 </div>\
1100                                 <div class="item">2</div>\
1101                             </div>\
1102                         </section>'),
1103                         list = c.doc().children()[0],
1104                         nestedList = list.children()[1].children()[0],
1105                         nestedListItem1 = nestedList.children()[1],
1106                         nestedListItem2 = nestedList.children()[2];
1107
1108                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
1109
1110                     var section = c.doc(),
1111                         list = section.children()[0],
1112                         item1 = list.children()[0],
1113                         item2 = list.children()[1],
1114                         item3 = list.children()[2],
1115                         item4 = list.children()[3],
1116                         item5 = list.children()[4];
1117                     nestedList = item2.children()[0];
1118
1119                     expect(list.children().length).to.equal(5, 'top list has five items');
1120                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1121                     expect(item2.getWlxmlClass()).to.equal('item', 'nested list is still wrapped in item element');
1122                     expect(nestedList.children().length).to.equal(1, 'nested list is left with one child');
1123                     expect(nestedList.children()[0].children()[0].getText()).to.equal('1.1', 'nested list item left alone');
1124                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1125                     expect(item4.children()[0].getText()).to.equal('1.3', 'fourth item ok');
1126                     expect(item5.children()[0].getText()).to.equal('2', 'fifth item ok');
1127                 });
1128
1129                 it('puts extracted items above the list if starting item is the first one - nested case' , function() {
1130                     var c = canvas.fromXML('\
1131                         <section>\
1132                             <div class="list.items">\
1133                                 <div class="item">0</div>\
1134                                 <div class="item">\
1135                                     <div class="list.items">\
1136                                         <div class="item">1.1</div>\
1137                                         <div class="item">1.2</div>\
1138                                         <div class="item">1.3</div>\
1139                                     </div>\
1140                                 </div>\
1141                                 <div class="item">2</div>\
1142                             </div>\
1143                         </section>'),
1144                         list = c.doc().children()[0],
1145                         nestedList = list.children()[1].children()[0],
1146                         nestedListItem1 = nestedList.children()[0],
1147                         nestedListItem2 = nestedList.children()[1];
1148
1149                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
1150
1151                     var section = c.doc(),
1152                         list = section.children()[0],
1153                         item1 = list.children()[0],
1154                         item2 = list.children()[1],
1155                         item3 = list.children()[2],
1156                         item4 = list.children()[3],
1157                         item5 = list.children()[4];
1158                     nestedList = item4.children()[0];
1159
1160                     expect(list.children().length).to.equal(5, 'top list has five items');
1161                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1162                     expect(item2.children()[0].getText()).to.equal('1.1', 'second item ok');
1163                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1164
1165                     expect(item4.getWlxmlClass()).to.equal('item', 'nested list is still wrapped in item element');
1166                     expect(nestedList.children().length).to.equal(1, 'nested list is left with one child');
1167                     expect(nestedList.children()[0].children()[0].getText()).to.equal('1.3', 'nested list item left alone');
1168                     expect(item5.children()[0].getText()).to.equal('2', 'fifth item ok');
1169                 });
1170
1171                 it('removes list if all its items are extracted - nested case', function() {
1172                     var c = canvas.fromXML('\
1173                         <section>\
1174                             <div class="list.items">\
1175                                 <div class="item">0</div>\
1176                                 <div class="item">\
1177                                     <div class="list.items">\
1178                                         <div class="item">1.1</div>\
1179                                         <div class="item">1.2</div>\
1180                                     </div>\
1181                                 </div>\
1182                                 <div class="item">2</div>\
1183                             </div>\
1184                         </section>'),
1185                         list = c.doc().children()[0],
1186                         nestedList = list.children()[1].children()[0],
1187                         nestedListItem1 = nestedList.children()[0],
1188                         nestedListItem2 = nestedList.children()[1];
1189
1190                     c.list.extractItems({element1: nestedListItem1, element2: nestedListItem2});
1191
1192                     var section = c.doc(),
1193                         list = section.children()[0],
1194                         item1 = list.children()[0],
1195                         item2 = list.children()[1],
1196                         item3 = list.children()[2],
1197                         item4 = list.children()[3];
1198
1199                     expect(list.children().length).to.equal(4, 'top list has four items');
1200                     expect(item1.children()[0].getText()).to.equal('0', 'first item ok');
1201                     expect(item2.children()[0].getText()).to.equal('1.1', 'second item ok');
1202                     expect(item3.children()[0].getText()).to.equal('1.2', 'third item ok');
1203                     expect(item4.children()[0].getText()).to.equal('2', 'fourth item ok');
1204                 });
1205
1206                 it('extracts items out of outer most list when merge flag is set to false', function() {
1207                     var c = canvas.fromXML('\
1208                         <section>\
1209                             <div class="list.items">\
1210                                 <div class="item">0</div>\
1211                                 <div class="item">\
1212                                     <div class="list.items">\
1213                                         <div class="item">1.1</div>\
1214                                         <div class="item">1.2</div>\
1215                                     </div>\
1216                                 </div>\
1217                                 <div class="item">2</div>\
1218                             </div>\
1219                         </section>'),
1220                         section = c.doc(),
1221                         list = section.children()[0],
1222                         nestedList = list.children()[1].children()[0],
1223                         nestedListItem = nestedList.children()[0];
1224
1225                     var test = c.list.extractItems({element1: nestedListItem, element2: nestedListItem, merge: false});
1226
1227                     expect(test).to.equal(true, 'extraction status ok');
1228
1229                     var sectionChildren = section.children(),
1230                         extractedItem = sectionChildren[1];
1231
1232                     expect(sectionChildren.length).to.equal(3, 'section has three children');
1233                     expect(sectionChildren[0].is('list')).to.equal(true, 'first child is a list');
1234
1235                     expect(extractedItem.getWlxmlTag()).to.equal('div', 'extracted item is a wlxml div');
1236                     expect(extractedItem.getWlxmlClass()).to.equal(undefined, 'extracted item has no wlxml class');
1237                     expect(extractedItem.children()[0].getText()).to.equal('1.1', 'extracted item ok');
1238                     expect(sectionChildren[2].is('list')).to.equal(true, 'second child is a list');
1239                 });
1240             });
1241         });
1242
1243     });
1244
1245     describe('Cursor', function() {
1246
1247         var getSelection;
1248
1249         var findTextNode = function(inside, text) {
1250             var nodes = inside.find(':not(iframe)').addBack().contents().filter(function() {
1251                 return this.nodeType === Node.TEXT_NODE && this.data === text;
1252             });
1253             if(nodes.length)
1254                 return nodes[0];
1255             return null;
1256         }
1257
1258         beforeEach(function() {
1259             getSelection = sinon.stub(window, 'getSelection');
1260         });
1261
1262         afterEach(function() {
1263             getSelection.restore();
1264         });
1265
1266         it('returns position when browser selection collapsed', function() {
1267             var c = canvas.fromXML('<section>Alice has a cat</section>'),
1268                 dom = c.doc().dom(),
1269                 text = findTextNode(dom, 'Alice has a cat');
1270
1271             expect(text.nodeType).to.equal(Node.TEXT_NODE, 'correct node selected');
1272             expect($(text).text()).to.equal('Alice has a cat');
1273
1274             getSelection.returns({
1275                 anchorNode: text,
1276                 focusNode: text,
1277                 anchorOffset: 5,
1278                 focusOffset: 5,
1279                 isCollapsed: true
1280             });
1281             var cursor = c.getCursor(),
1282                 position = cursor.getPosition();
1283
1284             expect(cursor.isSelecting()).to.equal(false, 'cursor is not selecting anything');
1285             expect(position.element.getText()).to.equal('Alice has a cat');
1286             expect(position.offset).to.equal(5);
1287             expect(position.offsetAtEnd).to.equal(false, 'offset is not at end');
1288
1289             getSelection.returns({
1290                 anchorNode: text,
1291                 focusNode: text,
1292                 anchorOffset: 15,
1293                 focusOffset: 15,
1294                 isCollapsed: true
1295             });
1296
1297             expect(cursor.getPosition().offsetAtEnd).to.equal(true, 'offset at end');
1298         });
1299
1300         it('returns boundries of selection when browser selection not collapsed', function() {
1301             var c = canvas.fromXML('<section>Alice <span>has</span> a <span>big</span> cat</section>'),
1302                 dom = c.doc().dom(),
1303                 text = {
1304                     alice: findTextNode(dom, 'Alice '),
1305                     has: findTextNode(dom, 'has'),
1306                     cat: findTextNode(dom, ' cat')
1307                 },
1308                 cursor = c.getCursor(),
1309                 aliceElement = c.getDocumentElement(text.alice),
1310                 catElement = c.getDocumentElement(text.cat);
1311
1312
1313                 [
1314                     {focus: text.alice, focusOffset: 1, anchor: text.cat,   anchorOffset: 2, selectionAnchor: catElement},
1315                     {focus: text.cat,   focusOffset: 2, anchor: text.alice, anchorOffset: 1, selectionAnchor: aliceElement}
1316                 ].forEach(function(s, idx) {
1317                     getSelection.returns({isColapsed: false, anchorNode: s.anchor, anchorOffset: s.anchorOffset, focusNode: s.focus, focusOffset: s.focusOffset});
1318
1319                     var selectionStart = cursor.getSelectionStart(),
1320                         selectionEnd = cursor.getSelectionEnd(),
1321                         selectionAnchor = cursor.getSelectionAnchor();
1322
1323                     expect(cursor.isSelecting()).to.equal(true, 'cursor is selecting');
1324                     expect(selectionStart.element.sameNode(aliceElement)).to.equal(true, '"Alice" is the start of the selection ' + idx);
1325                     expect(selectionStart.offset).to.equal(1, '"Alice" offset ok' + idx);
1326                     expect(selectionEnd.element.sameNode(catElement)).to.equal(true, '"Cat" is the start of the selection ' + idx);
1327                     expect(selectionEnd.offset).to.equal(2, '"Cat" offset ok' + idx);
1328                     expect(selectionAnchor.element.sameNode(s.selectionAnchor)).to.equal(true, 'anchor ok');
1329                     expect(selectionAnchor.offset).to.equal(s.anchorOffset, 'anchor offset ok');
1330                 });
1331         });
1332
1333         it('recognizes when browser selection boundries lies in sibling DocumentTextElements', function() {
1334             var c = canvas.fromXML('<section>Alice <span>has</span> a <span>big</span> cat</section>'),
1335                 dom = c.doc().dom(),
1336                 text = {
1337                     alice: findTextNode(dom, 'Alice '),
1338                     has: findTextNode(dom, 'has'),
1339                     a: findTextNode(dom, ' a '),
1340                     big: findTextNode(dom, 'big'),
1341                     cat: findTextNode(dom, ' cat'),
1342                 },
1343                 cursor = c.getCursor();
1344
1345             expect($(text.alice).text()).to.equal('Alice ');
1346             expect($(text.has).text()).to.equal('has');
1347             expect($(text.a).text()).to.equal(' a ');
1348             expect($(text.big).text()).to.equal('big');
1349             expect($(text.cat).text()).to.equal(' cat');
1350
1351             getSelection.returns({anchorNode: text.alice, focusNode: text.a});
1352             expect(cursor.isSelectingSiblings()).to.equal(true, '"Alice" and "a" are children');
1353
1354             getSelection.returns({anchorNode: text.alice, focusNode: text.cat});
1355             expect(cursor.isSelectingSiblings()).to.equal(true, '"Alice" and "cat" are children');
1356
1357             getSelection.returns({anchorNode: text.alice, focusNode: text.has});
1358             expect(cursor.isSelectingSiblings()).to.equal(false, '"Alice" and "has" are not children');
1359
1360             getSelection.returns({anchorNode: text.has, focusNode: text.big});
1361             expect(cursor.isSelectingSiblings()).to.equal(false, '"has" and "big" are not children');
1362
1363         })
1364     });
1365
1366     describe('Serializing document to WLXML', function() {
1367         it('keeps document intact when no changes have been made', function() {
1368             var xmlIn = '<section>Alice<div>has</div>a <span class="uri" meta-uri="http://cat.com">cat</span>!</section>',
1369                 c = canvas.fromXML(xmlIn),
1370                 xmlOut = c.toXML();
1371
1372             var parser = new DOMParser(),
1373                 input = parser.parseFromString(xmlIn, "application/xml").childNodes[0],
1374                 output = parser.parseFromString(xmlOut, "application/xml").childNodes[0];
1375
1376             expect(input.isEqualNode(output)).to.be.true;
1377         });
1378
1379         it('keeps arbitrary node attributes intact', function() {
1380             var xmlIn = '<section a="1" xmlns:dcterms="http://purl.org/dc/terms/"></section>',
1381                 $xmlOut = $(canvas.fromXML(xmlIn).toXML());
1382
1383             expect($xmlOut.attr('a')).to.equal('1');
1384             expect($xmlOut.attr('xmlns:dcterms')).to.equal('http://purl.org/dc/terms/');
1385         });
1386
1387         it('doesn\' serialize meta attribute if its empty', function() {
1388             var c;
1389
1390             c = canvas.fromXML('<section class="uri" meta-uri="some.uri"></section>');
1391             c.doc().setWlxmlMetaAttr('uri', '');
1392             expect($(c.toXML()).attr('meta-uri')).to.equal(undefined, 'overriding attribute with zero length string');
1393
1394             c = canvas.fromXML('<section class="uri"></section>');
1395             c.doc().setWlxmlMetaAttr('uri', '');
1396             expect($(c.toXML()).attr('meta-uri')).to.equal(undefined, 'setting attribute to zero length string');
1397         });
1398
1399         describe('output xml', function() {
1400             it('keeps entities intact', function() {
1401                 var xmlIn = '<section>&lt; &gt;</section>',
1402                     c = canvas.fromXML(xmlIn),
1403                     xmlOut = c.toXML();
1404                 expect(xmlOut).to.equal(xmlIn);
1405             });
1406             it('keeps entities intact when they form html/xml', function() {
1407                 var xmlIn = '<section>&lt;abc&gt;</section>',
1408                     c = canvas.fromXML(xmlIn),
1409                     xmlOut = c.toXML();
1410                 expect(xmlOut).to.equal(xmlIn);
1411             });
1412         });
1413
1414         describe('formatting output xml', function() {
1415             /*it('keeps white spaces at the edges of input xml', function() {
1416                 var xmlIn = '  <section></section>  ',
1417                 c = canvas.fromXML(xmlIn),
1418                 xmlOut = c.toXML();
1419
1420                 expect(xmlOut.substr(4)).to.equal('   <', 'start');
1421                 expect(xmlOut.substr(-2)).to.equal('>  ', 'end');
1422             });*/
1423             it('keeps white space between XML nodes', function() {
1424                 var xmlIn = '<section>\n\n\n<div></div>\n\n\n<div></div>\n\n\n</section>',
1425                 c = canvas.fromXML(xmlIn),
1426                 xmlOut = c.toXML();
1427
1428                 var partsIn = xmlIn.split('\n\n\n'),
1429                     partsOut = xmlOut.split('\n\n\n');
1430
1431                 expect(partsIn).to.deep.equal(partsOut);
1432             });
1433
1434             it('keeps white space between XML nodes - inline case', function() {
1435                 var xmlIn = '<section>\n\n\n<span></span>\n\n\n<span></span>\n\n\n</section>',
1436                 c = canvas.fromXML(xmlIn);
1437
1438                 var xmlOut = c.toXML();
1439
1440                 var partsIn = xmlIn.split('\n\n\n'),
1441                     partsOut = xmlOut.split('\n\n\n');
1442
1443                 expect(partsIn).to.deep.equal(partsOut);
1444             });
1445
1446             it('keeps white space at the beginning of text', function() {
1447                 var xmlIn = '<section>    abc<div>some div</div>    abc</section>',
1448                     c = canvas.fromXML(xmlIn),
1449                     xmlOut = c.toXML();
1450
1451                 expect(xmlOut).to.equal(xmlIn);
1452             });
1453
1454             it('nests new children block elements', function() {
1455                 var c = canvas.fromXML('<section></section>');
1456
1457                 c.doc().append({tag: 'header'});
1458
1459                 var xmlOut = c.toXML();
1460                 expect(xmlOut.split('\n  ')[0]).to.equal('<section>', 'nesting start ok');
1461                 expect(xmlOut.split('\n').slice(-1)[0]).to.equal('</section>', 'nesting end ok');
1462
1463             });
1464
1465             it('doesn\'t nest new children inline elements', function() {
1466                 var c = canvas.fromXML('<section></section>');
1467
1468                 c.doc().append({tag: 'span'});
1469
1470                 var xmlOut = c.toXML();
1471                 expect(xmlOut).to.equal('<section><span></span></section>');
1472             });
1473
1474             it('keeps original white space at the end of text', function() {
1475
1476                 var xmlIn = '<header>    Some text ended with white space \
1477                 \
1478                 <span class="uri">Some text</span> some text\
1479             \
1480             </header>',
1481                     c = canvas.fromXML(xmlIn);
1482
1483             var xmlOut = c.toXML();
1484             console.log(xmlOut);
1485             expect(xmlOut).to.equal(xmlIn);
1486             });
1487
1488             it('keeps white space around text node', function() {
1489                 var xmlIn = '<section>\
1490                 <header>header1</header>\
1491                 Some text surrounded by white space\
1492                 <header>header2</header>\
1493             </section>',
1494                     c = canvas.fromXML(xmlIn);
1495
1496                 var xmlOut = c.toXML();
1497                 expect(xmlOut).to.equal(xmlIn);
1498             });
1499
1500             it('keeps white space around text node - last node case', function() {
1501                 var xmlIn = '<section>\
1502                 <header>header</header>\
1503                     \
1504                 Some text surrounded by white space\
1505                     \
1506             </section>',
1507                     c = canvas.fromXML(xmlIn);
1508
1509                 var xmlOut = c.toXML();
1510                 expect(xmlOut).to.equal(xmlIn);
1511             });
1512
1513             it('keeps white space after detaching text element', function() {
1514                 var xmlIn = '<section><header>header</header>\n\
1515                     \n\
1516                 text1\n\
1517                     \n\
1518             </section>',
1519                     expectedXmlOut = '<section><header>header</header>\n\
1520                     \n\
1521                 \n\
1522                     \n\
1523             </section>',
1524                     c = canvas.fromXML(xmlIn),
1525                     children = c.doc().children(),
1526                     text = children[children.length-1];
1527
1528                 expect(text.getText()).to.equal('text1');
1529
1530                 text.detach();
1531
1532                 var xmlOut = c.toXML();
1533                 expect(xmlOut).to.equal(expectedXmlOut);
1534             });
1535
1536         })
1537     })
1538 });
1539
1540
1541 });