resources/jquery/jquery.qunit.js

   1 /**
   2  * QUnit v1.11.0 - A JavaScript Unit Testing Framework
   3  *
   4  * http://qunitjs.com
   5  *
   6  * Copyright 2012 jQuery Foundation and other contributors
   7  * Released under the MIT license.
   8  * http://jquery.org/license
   9  */
  10
  11 (function( window ) {
  12
  13 var QUnit,
  14         assert,
  15         config,
  16         onErrorFnPrev,
  17         testId = 0,
  18         fileName = (sourceFromStacktrace( 0 ) || "" ).replace(/(:\d+)+\)?/, "").replace(/.+\//, ""),
  19         toString = Object.prototype.toString,
  20         hasOwn = Object.prototype.hasOwnProperty,
  21         // Keep a local reference to Date (GH-283)
  22         Date = window.Date,
  23         defined = {
  24                 setTimeout: typeof window.setTimeout !== "undefined",
  25                 sessionStorage: (function() {
  26                         var x = "qunit-test-string";
  27                         try {
  28                                 sessionStorage.setItem( x, x );
  29                                 sessionStorage.removeItem( x );
  30                                 return true;
  31                         } catch( e ) {
  32                                 return false;
  33                         }
  34                 }())
  35         },
  36         /**
  37          * Provides a normalized error string, correcting an issue
  38          * with IE 7 (and prior) where Error.prototype.toString is
  39          * not properly implemented
  40          *
  41          * Based on http://es5.github.com/#x15.11.4.4
  42          *
  43          * @param {String|Error} error
  44          * @return {String} error message
  45          */
  46         errorString = function( error ) {
  47                 var name, message,
  48                         errorString = error.toString();
  49                 if ( errorString.substring( 0, 7 ) === "[object" ) {
  50                         name = error.name ? error.name.toString() : "Error";
  51                         message = error.message ? error.message.toString() : "";
  52                         if ( name && message ) {
  53                                 return name + ": " + message;
  54                         } else if ( name ) {
  55                                 return name;
  56                         } else if ( message ) {
  57                                 return message;
  58                         } else {
  59                                 return "Error";
  60                         }
  61                 } else {
  62                         return errorString;
  63                 }
  64         },
  65         /**
  66          * Makes a clone of an object using only Array or Object as base,
  67          * and copies over the own enumerable properties.
  68          *
  69          * @param {Object} obj
  70          * @return {Object} New object with only the own properties (recursively).
  71          */
  72         objectValues = function( obj ) {
  73                 // Grunt 0.3.x uses an older version of jshint that still has jshint/jshint#392.
  74                 /*jshint newcap: false */
  75                 var key, val,
  76                         vals = QUnit.is( "array", obj ) ? [] : {};
  77                 for ( key in obj ) {
  78                         if ( hasOwn.call( obj, key ) ) {
  79                                 val = obj[key];
  80                                 vals[key] = val === Object(val) ? objectValues(val) : val;
  81                         }
  82                 }
  83                 return vals;
  84         };
  85
  86 function Test( settings ) {
  87         extend( this, settings );
  88         this.assertions = [];
  89         this.testNumber = ++Test.count;
  90 }
  91
  92 Test.count = 0;
  93
  94 Test.prototype = {
  95         init: function() {
  96                 var a, b, li,
  97                         tests = id( "qunit-tests" );
  98
  99                 if ( tests ) {
 100                         b = document.createElement( "strong" );
 101                         b.innerHTML = this.nameHtml;
 102
 103                         // `a` initialized at top of scope
 104                         a = document.createElement( "a" );
 105                         a.innerHTML = "Rerun";
 106                         a.href = QUnit.url({ testNumber: this.testNumber });
 107
 108                         li = document.createElement( "li" );
 109                         li.appendChild( b );
 110                         li.appendChild( a );
 111                         li.className = "running";
 112                         li.id = this.id = "qunit-test-output" + testId++;
 113
 114                         tests.appendChild( li );
 115                 }
 116         },
 117         setup: function() {
 118                 if ( this.module !== config.previousModule ) {
 119                         if ( config.previousModule ) {
 120                                 runLoggingCallbacks( "moduleDone", QUnit, {
 121                                         name: config.previousModule,
 122                                         failed: config.moduleStats.bad,
 123                                         passed: config.moduleStats.all - config.moduleStats.bad,
 124                                         total: config.moduleStats.all
 125                                 });
 126                         }
 127                         config.previousModule = this.module;
 128                         config.moduleStats = { all: 0, bad: 0 };
 129                         runLoggingCallbacks( "moduleStart", QUnit, {
 130                                 name: this.module
 131                         });
 132                 } else if ( config.autorun ) {
 133                         runLoggingCallbacks( "moduleStart", QUnit, {
 134                                 name: this.module
 135                         });
 136                 }
 137
 138                 config.current = this;
 139
 140                 this.testEnvironment = extend({
 141                         setup: function() {},
 142                         teardown: function() {}
 143                 }, this.moduleTestEnvironment );
 144
 145                 this.started = +new Date();
 146                 runLoggingCallbacks( "testStart", QUnit, {
 147                         name: this.testName,
 148                         module: this.module
 149                 });
 150
 151                 // allow utility functions to access the current test environment
 152                 // TODO why??
 153                 QUnit.current_testEnvironment = this.testEnvironment;
 154
 155                 if ( !config.pollution ) {
 156                         saveGlobal();
 157                 }
 158                 if ( config.notrycatch ) {
 159                         this.testEnvironment.setup.call( this.testEnvironment );
 160                         return;
 161                 }
 162                 try {
 163                         this.testEnvironment.setup.call( this.testEnvironment );
 164                 } catch( e ) {
 165                         QUnit.pushFailure( "Setup failed on " + this.testName + ": " + ( e.message || e ), extractStacktrace( e, 1 ) );
 166                 }
 167         },
 168         run: function() {
 169                 config.current = this;
 170
 171                 var running = id( "qunit-testresult" );
 172
 173                 if ( running ) {
 174                         running.innerHTML = "Running: <br/>" + this.nameHtml;
 175                 }
 176
 177                 if ( this.async ) {
 178                         QUnit.stop();
 179                 }
 180
 181                 this.callbackStarted = +new Date();
 182
 183                 if ( config.notrycatch ) {
 184                         this.callback.call( this.testEnvironment, QUnit.assert );
 185                         this.callbackRuntime = +new Date() - this.callbackStarted;
 186                         return;
 187                 }
 188
 189                 try {
 190                         this.callback.call( this.testEnvironment, QUnit.assert );
 191                         this.callbackRuntime = +new Date() - this.callbackStarted;
 192                 } catch( e ) {
 193                         this.callbackRuntime = +new Date() - this.callbackStarted;
 194
 195                         QUnit.pushFailure( "Died on test #" + (this.assertions.length + 1) + " " + this.stack + ": " + ( e.message || e ), extractStacktrace( e, 0 ) );
 196                         // else next test will carry the responsibility
 197                         saveGlobal();
 198
 199                         // Restart the tests if they're blocking
 200                         if ( config.blocking ) {
 201                                 QUnit.start();
 202                         }
 203                 }
 204         },
 205         teardown: function() {
 206                 config.current = this;
 207                 if ( config.notrycatch ) {
 208                         if ( typeof this.callbackRuntime === "undefined" ) {
 209                                 this.callbackRuntime = +new Date() - this.callbackStarted;
 210                         }
 211                         this.testEnvironment.teardown.call( this.testEnvironment );
 212                         return;
 213                 } else {
 214                         try {
 215                                 this.testEnvironment.teardown.call( this.testEnvironment );
 216                         } catch( e ) {
 217                                 QUnit.pushFailure( "Teardown failed on " + this.testName + ": " + ( e.message || e ), extractStacktrace( e, 1 ) );
 218                         }
 219                 }
 220                 checkPollution();
 221         },
 222         finish: function() {
 223                 config.current = this;
 224                 if ( config.requireExpects && this.expected === null ) {
 225                         QUnit.pushFailure( "Expected number of assertions to be defined, but expect() was not called.", this.stack );
 226                 } else if ( this.expected !== null && this.expected !== this.assertions.length ) {
 227                         QUnit.pushFailure( "Expected " + this.expected + " assertions, but " + this.assertions.length + " were run", this.stack );
 228                 } else if ( this.expected === null && !this.assertions.length ) {
 229                         QUnit.pushFailure( "Expected at least one assertion, but none were run - call expect(0) to accept zero assertions.", this.stack );
 230                 }
 231
 232                 var i, assertion, a, b, time, li, ol,
 233                         test = this,
 234                         good = 0,
 235                         bad = 0,
 236                         tests = id( "qunit-tests" );
 237
 238                 this.runtime = +new Date() - this.started;
 239                 config.stats.all += this.assertions.length;
 240                 config.moduleStats.all += this.assertions.length;
 241
 242                 if ( tests ) {
 243                         ol = document.createElement( "ol" );
 244                         ol.className = "qunit-assert-list";
 245
 246                         for ( i = 0; i < this.assertions.length; i++ ) {
 247                                 assertion = this.assertions[i];
 248
 249                                 li = document.createElement( "li" );
 250                                 li.className = assertion.result ? "pass" : "fail";
 251                                 li.innerHTML = assertion.message || ( assertion.result ? "okay" : "failed" );
 252                                 ol.appendChild( li );
 253
 254                                 if ( assertion.result ) {
 255                                         good++;
 256                                 } else {
 257                                         bad++;
 258                                         config.stats.bad++;
 259                                         config.moduleStats.bad++;
 260                                 }
 261                         }
 262
 263                         // store result when possible
 264                         if ( QUnit.config.reorder && defined.sessionStorage ) {
 265                                 if ( bad ) {
 266                                         sessionStorage.setItem( "qunit-test-" + this.module + "-" + this.testName, bad );
 267                                 } else {
 268                                         sessionStorage.removeItem( "qunit-test-" + this.module + "-" + this.testName );
 269                                 }
 270                         }
 271
 272                         if ( bad === 0 ) {
 273                                 addClass( ol, "qunit-collapsed" );
 274                         }
 275
 276                         // `b` initialized at top of scope
 277                         b = document.createElement( "strong" );
 278                         b.innerHTML = this.nameHtml + " <b class='counts'>(<b class='failed'>" + bad + "</b>, <b class='passed'>" + good + "</b>, " + this.assertions.length + ")</b>";
 279
 280                         addEvent(b, "click", function() {
 281                                 var next = b.parentNode.lastChild,
 282                                         collapsed = hasClass( next, "qunit-collapsed" );
 283                                 ( collapsed ? removeClass : addClass )( next, "qunit-collapsed" );
 284                         });
 285
 286                         addEvent(b, "dblclick", function( e ) {
 287                                 var target = e && e.target ? e.target : window.event.srcElement;
 288                                 if ( target.nodeName.toLowerCase() === "span" || target.nodeName.toLowerCase() === "b" ) {
 289                                         target = target.parentNode;
 290                                 }
 291                                 if ( window.location && target.nodeName.toLowerCase() === "strong" ) {
 292                                         window.location = QUnit.url({ testNumber: test.testNumber });
 293                                 }
 294                         });
 295
 296                         // `time` initialized at top of scope
 297                         time = document.createElement( "span" );
 298                         time.className = "runtime";
 299                         time.innerHTML = this.runtime + " ms";
 300
 301                         // `li` initialized at top of scope
 302                         li = id( this.id );
 303                         li.className = bad ? "fail" : "pass";
 304                         li.removeChild( li.firstChild );
 305                         a = li.firstChild;
 306                         li.appendChild( b );
 307                         li.appendChild( a );
 308                         li.appendChild( time );
 309                         li.appendChild( ol );
 310
 311                 } else {
 312                         for ( i = 0; i < this.assertions.length; i++ ) {
 313                                 if ( !this.assertions[i].result ) {
 314                                         bad++;
 315                                         config.stats.bad++;
 316                                         config.moduleStats.bad++;
 317                                 }
 318                         }
 319                 }
 320
 321                 runLoggingCallbacks( "testDone", QUnit, {
 322                         name: this.testName,
 323                         module: this.module,
 324                         failed: bad,
 325                         passed: this.assertions.length - bad,
 326                         total: this.assertions.length,
 327                         duration: this.runtime
 328                 });
 329
 330                 QUnit.reset();
 331
 332                 config.current = undefined;
 333         },
 334
 335         queue: function() {
 336                 var bad,
 337                         test = this;
 338
 339                 synchronize(function() {
 340                         test.init();
 341                 });
 342                 function run() {
 343                         // each of these can by async
 344                         synchronize(function() {
 345                                 test.setup();
 346                         });
 347                         synchronize(function() {
 348                                 test.run();
 349                         });
 350                         synchronize(function() {
 351                                 test.teardown();
 352                         });
 353                         synchronize(function() {
 354                                 test.finish();
 355                         });
 356                 }
 357
 358                 // `bad` initialized at top of scope
 359                 // defer when previous test run passed, if storage is available
 360                 bad = QUnit.config.reorder && defined.sessionStorage &&
 361                                                 +sessionStorage.getItem( "qunit-test-" + this.module + "-" + this.testName );
 362
 363                 if ( bad ) {
 364                         run();
 365                 } else {
 366                         synchronize( run, true );
 367                 }
 368         }
 369 };
 370
 371 // Root QUnit object.
 372 // `QUnit` initialized at top of scope
 373 QUnit = {
 374
 375         // call on start of module test to prepend name to all tests
 376         module: function( name, testEnvironment ) {
 377                 config.currentModule = name;
 378                 config.currentModuleTestEnvironment = testEnvironment;
 379                 config.modules[name] = true;
 380         },
 381
 382         asyncTest: function( testName, expected, callback ) {
 383                 if ( arguments.length === 2 ) {
 384                         callback = expected;
 385                         expected = null;
 386                 }
 387
 388                 QUnit.test( testName, expected, callback, true );
 389         },
 390
 391         test: function( testName, expected, callback, async ) {
 392                 var test,
 393                         nameHtml = "<span class='test-name'>" + escapeText( testName ) + "</span>";
 394
 395                 if ( arguments.length === 2 ) {
 396                         callback = expected;
 397                         expected = null;
 398                 }
 399
 400                 if ( config.currentModule ) {
 401                         nameHtml = "<span class='module-name'>" + escapeText( config.currentModule ) + "</span>: " + nameHtml;
 402                 }
 403
 404                 test = new Test({
 405                         nameHtml: nameHtml,
 406                         testName: testName,
 407                         expected: expected,
 408                         async: async,
 409                         callback: callback,
 410                         module: config.currentModule,
 411                         moduleTestEnvironment: config.currentModuleTestEnvironment,
 412                         stack: sourceFromStacktrace( 2 )
 413                 });
 414
 415                 if ( !validTest( test ) ) {
 416                         return;
 417                 }
 418
 419                 test.queue();
 420         },
 421
 422         // Specify the number of expected assertions to gurantee that failed test (no assertions are run at all) don't slip through.
 423         expect: function( asserts ) {
 424                 if (arguments.length === 1) {
 425                         config.current.expected = asserts;
 426                 } else {
 427                         return config.current.expected;
 428                 }
 429         },
 430
 431         start: function( count ) {
 432                 // QUnit hasn't been initialized yet.
 433                 // Note: RequireJS (et al) may delay onLoad
 434                 if ( config.semaphore === undefined ) {
 435                         QUnit.begin(function() {
 436                                 // This is triggered at the top of QUnit.load, push start() to the event loop, to allow QUnit.load to finish first
 437                                 setTimeout(function() {
 438                                         QUnit.start( count );
 439                                 });
 440                         });
 441                         return;
 442                 }
 443
 444                 config.semaphore -= count || 1;
 445                 // don't start until equal number of stop-calls
 446                 if ( config.semaphore > 0 ) {
 447                         return;
 448                 }
 449                 // ignore if start is called more often then stop
 450                 if ( config.semaphore < 0 ) {
 451                         config.semaphore = 0;
 452                         QUnit.pushFailure( "Called start() while already started (QUnit.config.semaphore was 0 already)", null, sourceFromStacktrace(2) );
 453                         return;
 454                 }
 455                 // A slight delay, to avoid any current callbacks
 456                 if ( defined.setTimeout ) {
 457                         window.setTimeout(function() {
 458                                 if ( config.semaphore > 0 ) {
 459                                         return;
 460                                 }
 461                                 if ( config.timeout ) {
 462                                         clearTimeout( config.timeout );
 463                                 }
 464
 465                                 config.blocking = false;
 466                                 process( true );
 467                         }, 13);
 468                 } else {
 469                         config.blocking = false;
 470                         process( true );
 471                 }
 472         },
 473
 474         stop: function( count ) {
 475                 config.semaphore += count || 1;
 476                 config.blocking = true;
 477
 478                 if ( config.testTimeout && defined.setTimeout ) {
 479                         clearTimeout( config.timeout );
 480                         config.timeout = window.setTimeout(function() {
 481                                 QUnit.ok( false, "Test timed out" );
 482                                 config.semaphore = 1;
 483                                 QUnit.start();
 484                         }, config.testTimeout );
 485                 }
 486         }
 487 };
 488
 489 // `assert` initialized at top of scope
 490 // Asssert helpers
 491 // All of these must either call QUnit.push() or manually do:
 492 // - runLoggingCallbacks( "log", .. );
 493 // - config.current.assertions.push({ .. });
 494 // We attach it to the QUnit object *after* we expose the public API,
 495 // otherwise `assert` will become a global variable in browsers (#341).
 496 assert = {
 497         /**
 498          * Asserts rough true-ish result.
 499          * @name ok
 500          * @function
 501          * @example ok( "asdfasdf".length > 5, "There must be at least 5 chars" );
 502          */
 503         ok: function( result, msg ) {
 504                 if ( !config.current ) {
 505                         throw new Error( "ok() assertion outside test context, was " + sourceFromStacktrace(2) );
 506                 }
 507                 result = !!result;
 508
 509                 var source,
 510                         details = {
 511                                 module: config.current.module,
 512                                 name: config.current.testName,
 513                                 result: result,
 514                                 message: msg
 515                         };
 516
 517                 msg = escapeText( msg || (result ? "okay" : "failed" ) );
 518                 msg = "<span class='test-message'>" + msg + "</span>";
 519
 520                 if ( !result ) {
 521                         source = sourceFromStacktrace( 2 );
 522                         if ( source ) {
 523                                 details.source = source;
 524                                 msg += "<table><tr class='test-source'><th>Source: </th><td><pre>" + escapeText( source ) + "</pre></td></tr></table>";
 525                         }
 526                 }
 527                 runLoggingCallbacks( "log", QUnit, details );
 528                 config.current.assertions.push({
 529                         result: result,
 530                         message: msg
 531                 });
 532         },
 533
 534         /**
 535          * Assert that the first two arguments are equal, with an optional message.
 536          * Prints out both actual and expected values.
 537          * @name equal
 538          * @function
 539          * @example equal( format( "Received {0} bytes.", 2), "Received 2 bytes.", "format() replaces {0} with next argument" );
 540          */
 541         equal: function( actual, expected, message ) {
 542                 /*jshint eqeqeq:false */
 543                 QUnit.push( expected == actual, actual, expected, message );
 544         },
 545
 546         /**
 547          * @name notEqual
 548          * @function
 549          */
 550         notEqual: function( actual, expected, message ) {
 551                 /*jshint eqeqeq:false */
 552                 QUnit.push( expected != actual, actual, expected, message );
 553         },
 554
 555         /**
 556          * @name propEqual
 557          * @function
 558          */
 559         propEqual: function( actual, expected, message ) {
 560                 actual = objectValues(actual);
 561                 expected = objectValues(expected);
 562                 QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
 563         },
 564
 565         /**
 566          * @name notPropEqual
 567          * @function
 568          */
 569         notPropEqual: function( actual, expected, message ) {
 570                 actual = objectValues(actual);
 571                 expected = objectValues(expected);
 572                 QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
 573         },
 574
 575         /**
 576          * @name deepEqual
 577          * @function
 578          */
 579         deepEqual: function( actual, expected, message ) {
 580                 QUnit.push( QUnit.equiv(actual, expected), actual, expected, message );
 581         },
 582
 583         /**
 584          * @name notDeepEqual
 585          * @function
 586          */
 587         notDeepEqual: function( actual, expected, message ) {
 588                 QUnit.push( !QUnit.equiv(actual, expected), actual, expected, message );
 589         },
 590
 591         /**
 592          * @name strictEqual
 593          * @function
 594          */
 595         strictEqual: function( actual, expected, message ) {
 596                 QUnit.push( expected === actual, actual, expected, message );
 597         },
 598
 599         /**
 600          * @name notStrictEqual
 601          * @function
 602          */
 603         notStrictEqual: function( actual, expected, message ) {
 604                 QUnit.push( expected !== actual, actual, expected, message );
 605         },
 606
 607         "throws": function( block, expected, message ) {
 608                 var actual,
 609                         expectedOutput = expected,
 610                         ok = false;
 611
 612                 // 'expected' is optional
 613                 if ( typeof expected === "string" ) {
 614                         message = expected;
 615                         expected = null;
 616                 }
 617
 618                 config.current.ignoreGlobalErrors = true;
 619                 try {
 620                         block.call( config.current.testEnvironment );
 621                 } catch (e) {
 622                         actual = e;
 623                 }
 624                 config.current.ignoreGlobalErrors = false;
 625
 626                 if ( actual ) {
 627                         // we don't want to validate thrown error
 628                         if ( !expected ) {
 629                                 ok = true;
 630                                 expectedOutput = null;
 631                         // expected is a regexp
 632                         } else if ( QUnit.objectType( expected ) === "regexp" ) {
 633                                 ok = expected.test( errorString( actual ) );
 634                         // expected is a constructor
 635                         } else if ( actual instanceof expected ) {
 636                                 ok = true;
 637                         // expected is a validation function which returns true is validation passed
 638                         } else if ( expected.call( {}, actual ) === true ) {
 639                                 expectedOutput = null;
 640                                 ok = true;
 641                         }
 642
 643                         QUnit.push( ok, actual, expectedOutput, message );
 644                 } else {
 645                         QUnit.pushFailure( message, null, 'No exception was thrown.' );
 646                 }
 647         }
 648 };
 649
 650 /**
 651  * @deprecate since 1.8.0
 652  * Kept assertion helpers in root for backwards compatibility.
 653  */
 654 extend( QUnit, assert );
 655
 656 /**
 657  * @deprecated since 1.9.0
 658  * Kept root "raises()" for backwards compatibility.
 659  * (Note that we don't introduce assert.raises).
 660  */
 661 QUnit.raises = assert[ "throws" ];
 662
 663 /**
 664  * @deprecated since 1.0.0, replaced with error pushes since 1.3.0
 665  * Kept to avoid TypeErrors for undefined methods.
 666  */
 667 QUnit.equals = function() {
 668         QUnit.push( false, false, false, "QUnit.equals has been deprecated since 2009 (e88049a0), use QUnit.equal instead" );
 669 };
 670 QUnit.same = function() {
 671         QUnit.push( false, false, false, "QUnit.same has been deprecated since 2009 (e88049a0), use QUnit.deepEqual instead" );
 672 };
 673
 674 // We want access to the constructor's prototype
 675 (function() {
 676         function F() {}
 677         F.prototype = QUnit;
 678         QUnit = new F();
 679         // Make F QUnit's constructor so that we can add to the prototype later
 680         QUnit.constructor = F;
 681 }());
 682
 683 /**
 684  * Config object: Maintain internal state
 685  * Later exposed as QUnit.config
 686  * `config` initialized at top of scope
 687  */
 688 config = {
 689         // The queue of tests to run
 690         queue: [],
 691
 692         // block until document ready
 693         blocking: true,
 694
 695         // when enabled, show only failing tests
 696         // gets persisted through sessionStorage and can be changed in UI via checkbox
 697         hidepassed: false,
 698
 699         // by default, run previously failed tests first
 700         // very useful in combination with "Hide passed tests" checked
 701         reorder: true,
 702
 703         // by default, modify document.title when suite is done
 704         altertitle: true,
 705
 706         // when enabled, all tests must call expect()
 707         requireExpects: false,
 708
 709         // add checkboxes that are persisted in the query-string
 710         // when enabled, the id is set to `true` as a `QUnit.config` property
 711         urlConfig: [
 712                 {
 713                         id: "noglobals",
 714                         label: "Check for Globals",
 715                         tooltip: "Enabling this will test if any test introduces new properties on the `window` object. Stored as query-strings."
 716                 },
 717                 {
 718                         id: "notrycatch",
 719                         label: "No try-catch",
 720                         tooltip: "Enabling this will run tests outside of a try-catch block. Makes debugging exceptions in IE reasonable. Stored as query-strings."
 721                 }
 722         ],
 723
 724         // Set of all modules.
 725         modules: {},
 726
 727         // logging callback queues
 728         begin: [],
 729         done: [],
 730         log: [],
 731         testStart: [],
 732         testDone: [],
 733         moduleStart: [],
 734         moduleDone: []
 735 };
 736
 737 // Export global variables, unless an 'exports' object exists,
 738 // in that case we assume we're in CommonJS (dealt with on the bottom of the script)
 739 if ( typeof exports === "undefined" ) {
 740         extend( window, QUnit );
 741
 742         // Expose QUnit object
 743         window.QUnit = QUnit;
 744 }
 745
 746 // Initialize more QUnit.config and QUnit.urlParams
 747 (function() {
 748         var i,
 749                 location = window.location || { search: "", protocol: "file:" },
 750                 params = location.search.slice( 1 ).split( "&" ),
 751                 length = params.length,
 752                 urlParams = {},
 753                 current;
 754
 755         if ( params[ 0 ] ) {
 756                 for ( i = 0; i < length; i++ ) {
 757                         current = params[ i ].split( "=" );
 758                         current[ 0 ] = decodeURIComponent( current[ 0 ] );
 759                         // allow just a key to turn on a flag, e.g., test.html?noglobals
 760                         current[ 1 ] = current[ 1 ] ? decodeURIComponent( current[ 1 ] ) : true;
 761                         urlParams[ current[ 0 ] ] = current[ 1 ];
 762                 }
 763         }
 764
 765         QUnit.urlParams = urlParams;
 766
 767         // String search anywhere in moduleName+testName
 768         config.filter = urlParams.filter;
 769
 770         // Exact match of the module name
 771         config.module = urlParams.module;
 772
 773         config.testNumber = parseInt( urlParams.testNumber, 10 ) || null;
 774
 775         // Figure out if we're running the tests from a server or not
 776         QUnit.isLocal = location.protocol === "file:";
 777 }());
 778
 779 // Extend QUnit object,
 780 // these after set here because they should not be exposed as global functions
 781 extend( QUnit, {
 782         assert: assert,
 783
 784         config: config,
 785
 786         // Initialize the configuration options
 787         init: function() {
 788                 extend( config, {
 789                         stats: { all: 0, bad: 0 },
 790                         moduleStats: { all: 0, bad: 0 },
 791                         started: +new Date(),
 792                         updateRate: 1000,
 793                         blocking: false,
 794                         autostart: true,
 795                         autorun: false,
 796                         filter: "",
 797                         queue: [],
 798                         semaphore: 1
 799                 });
 800
 801                 var tests, banner, result,
 802                         qunit = id( "qunit" );
 803
 804                 if ( qunit ) {
 805                         qunit.innerHTML =
 806                                 "<h1 id='qunit-header'>" + escapeText( document.title ) + "</h1>" +
 807                                 "<h2 id='qunit-banner'></h2>" +
 808                                 "<div id='qunit-testrunner-toolbar'></div>" +
 809                                 "<h2 id='qunit-userAgent'></h2>" +
 810                                 "<ol id='qunit-tests'></ol>";
 811                 }
 812
 813                 tests = id( "qunit-tests" );
 814                 banner = id( "qunit-banner" );
 815                 result = id( "qunit-testresult" );
 816
 817                 if ( tests ) {
 818                         tests.innerHTML = "";
 819                 }
 820
 821                 if ( banner ) {
 822                         banner.className = "";
 823                 }
 824
 825                 if ( result ) {
 826                         result.parentNode.removeChild( result );
 827                 }
 828
 829                 if ( tests ) {
 830                         result = document.createElement( "p" );
 831                         result.id = "qunit-testresult";
 832                         result.className = "result";
 833                         tests.parentNode.insertBefore( result, tests );
 834                         result.innerHTML = "Running...<br/>&nbsp;";
 835                 }
 836         },
 837
 838         // Resets the test setup. Useful for tests that modify the DOM.
 839         reset: function() {
 840                 var fixture = id( "qunit-fixture" );
 841                 if ( fixture ) {
 842                         fixture.innerHTML = config.fixture;
 843                 }
 844         },
 845
 846         // Trigger an event on an element.
 847         // @example triggerEvent( document.body, "click" );
 848         triggerEvent: function( elem, type, event ) {
 849                 if ( document.createEvent ) {
 850                         event = document.createEvent( "MouseEvents" );
 851                         event.initMouseEvent(type, true, true, elem.ownerDocument.defaultView,
 852                                 0, 0, 0, 0, 0, false, false, false, false, 0, null);
 853
 854                         elem.dispatchEvent( event );
 855                 } else if ( elem.fireEvent ) {
 856                         elem.fireEvent( "on" + type );
 857                 }
 858         },
 859
 860         // Safe object type checking
 861         is: function( type, obj ) {
 862                 return QUnit.objectType( obj ) === type;
 863         },
 864
 865         objectType: function( obj ) {
 866                 if ( typeof obj === "undefined" ) {
 867                                 return "undefined";
 868                 // consider: typeof null === object
 869                 }
 870                 if ( obj === null ) {
 871                                 return "null";
 872                 }
 873
 874                 var match = toString.call( obj ).match(/^\[object\s(.*)\]$/),
 875                         type = match && match[1] || "";
 876
 877                 switch ( type ) {
 878                         case "Number":
 879                                 if ( isNaN(obj) ) {
 880                                         return "nan";
 881                                 }
 882                                 return "number";
 883                         case "String":
 884                         case "Boolean":
 885                         case "Array":
 886                         case "Date":
 887                         case "RegExp":
 888                         case "Function":
 889                                 return type.toLowerCase();
 890                 }
 891                 if ( typeof obj === "object" ) {
 892                         return "object";
 893                 }
 894                 return undefined;
 895         },
 896
 897         push: function( result, actual, expected, message ) {
 898                 if ( !config.current ) {
 899                         throw new Error( "assertion outside test context, was " + sourceFromStacktrace() );
 900                 }
 901
 902                 var output, source,
 903                         details = {
 904                                 module: config.current.module,
 905                                 name: config.current.testName,
 906                                 result: result,
 907                                 message: message,
 908                                 actual: actual,
 909                                 expected: expected
 910                         };
 911
 912                 message = escapeText( message ) || ( result ? "okay" : "failed" );
 913                 message = "<span class='test-message'>" + message + "</span>";
 914                 output = message;
 915
 916                 if ( !result ) {
 917                         expected = escapeText( QUnit.jsDump.parse(expected) );
 918                         actual = escapeText( QUnit.jsDump.parse(actual) );
 919                         output += "<table><tr class='test-expected'><th>Expected: </th><td><pre>" + expected + "</pre></td></tr>";
 920
 921                         if ( actual !== expected ) {
 922                                 output += "<tr class='test-actual'><th>Result: </th><td><pre>" + actual + "</pre></td></tr>";
 923                                 output += "<tr class='test-diff'><th>Diff: </th><td><pre>" + QUnit.diff( expected, actual ) + "</pre></td></tr>";
 924                         }
 925
 926                         source = sourceFromStacktrace();
 927
 928                         if ( source ) {
 929                                 details.source = source;
 930                                 output += "<tr class='test-source'><th>Source: </th><td><pre>" + escapeText( source ) + "</pre></td></tr>";
 931                         }
 932
 933                         output += "</table>";
 934                 }
 935
 936                 runLoggingCallbacks( "log", QUnit, details );
 937
 938                 config.current.assertions.push({
 939                         result: !!result,
 940                         message: output
 941                 });
 942         },
 943
 944         pushFailure: function( message, source, actual ) {
 945                 if ( !config.current ) {
 946                         throw new Error( "pushFailure() assertion outside test context, was " + sourceFromStacktrace(2) );
 947                 }
 948
 949                 var output,
 950                         details = {
 951                                 module: config.current.module,
 952                                 name: config.current.testName,
 953                                 result: false,
 954                                 message: message
 955                         };
 956
 957                 message = escapeText( message ) || "error";
 958                 message = "<span class='test-message'>" + message + "</span>";
 959                 output = message;
 960
 961                 output += "<table>";
 962
 963                 if ( actual ) {
 964                         output += "<tr class='test-actual'><th>Result: </th><td><pre>" + escapeText( actual ) + "</pre></td></tr>";
 965                 }
 966
 967                 if ( source ) {
 968                         details.source = source;
 969                         output += "<tr class='test-source'><th>Source: </th><td><pre>" + escapeText( source ) + "</pre></td></tr>";
 970                 }
 971
 972                 output += "</table>";
 973
 974                 runLoggingCallbacks( "log", QUnit, details );
 975
 976                 config.current.assertions.push({
 977                         result: false,
 978                         message: output
 979                 });
 980         },
 981
 982         url: function( params ) {
 983                 params = extend( extend( {}, QUnit.urlParams ), params );
 984                 var key,
 985                         querystring = "?";
 986
 987                 for ( key in params ) {
 988                         if ( !hasOwn.call( params, key ) ) {
 989                                 continue;
 990                         }
 991                         querystring += encodeURIComponent( key ) + "=" +
 992                                 encodeURIComponent( params[ key ] ) + "&";
 993                 }
 994                 return window.location.protocol + "//" + window.location.host +
 995                         window.location.pathname + querystring.slice( 0, -1 );
 996         },
 997
 998         extend: extend,
 999         id: id,
1000         addEvent: addEvent
1001         // load, equiv, jsDump, diff: Attached later
1002 });
1003
1004 /**
1005  * @deprecated: Created for backwards compatibility with test runner that set the hook function
1006  * into QUnit.{hook}, instead of invoking it and passing the hook function.
1007  * QUnit.constructor is set to the empty F() above so that we can add to it's prototype here.
1008  * Doing this allows us to tell if the following methods have been overwritten on the actual
1009  * QUnit object.
1010  */
1011 extend( QUnit.constructor.prototype, {
1012
1013         // Logging callbacks; all receive a single argument with the listed properties
1014         // run test/logs.html for any related changes
1015         begin: registerLoggingCallback( "begin" ),
1016
1017         // done: { failed, passed, total, runtime }
1018         done: registerLoggingCallback( "done" ),
1019
1020         // log: { result, actual, expected, message }
1021         log: registerLoggingCallback( "log" ),
1022
1023         // testStart: { name }
1024         testStart: registerLoggingCallback( "testStart" ),
1025
1026         // testDone: { name, failed, passed, total, duration }
1027         testDone: registerLoggingCallback( "testDone" ),
1028
1029         // moduleStart: { name }
1030         moduleStart: registerLoggingCallback( "moduleStart" ),
1031
1032         // moduleDone: { name, failed, passed, total }
1033         moduleDone: registerLoggingCallback( "moduleDone" )
1034 });
1035
1036 if ( typeof document === "undefined" || document.readyState === "complete" ) {
1037         config.autorun = true;
1038 }
1039
1040 QUnit.load = function() {
1041         runLoggingCallbacks( "begin", QUnit, {} );
1042
1043         // Initialize the config, saving the execution queue
1044         var banner, filter, i, label, len, main, ol, toolbar, userAgent, val,
1045                 urlConfigCheckboxesContainer, urlConfigCheckboxes, moduleFilter,
1046                 numModules = 0,
1047                 moduleFilterHtml = "",
1048                 urlConfigHtml = "",
1049                 oldconfig = extend( {}, config );
1050
1051         QUnit.init();
1052         extend(config, oldconfig);
1053
1054         config.blocking = false;
1055
1056         len = config.urlConfig.length;
1057
1058         for ( i = 0; i < len; i++ ) {
1059                 val = config.urlConfig[i];
1060                 if ( typeof val === "string" ) {
1061                         val = {
1062                                 id: val,
1063                                 label: val,
1064                                 tooltip: "[no tooltip available]"
1065                         };
1066                 }
1067                 config[ val.id ] = QUnit.urlParams[ val.id ];
1068                 urlConfigHtml += "<input id='qunit-urlconfig-" + escapeText( val.id ) +
1069                         "' name='" + escapeText( val.id ) +
1070                         "' type='checkbox'" + ( config[ val.id ] ? " checked='checked'" : "" ) +
1071                         " title='" + escapeText( val.tooltip ) +
1072                         "'><label for='qunit-urlconfig-" + escapeText( val.id ) +
1073                         "' title='" + escapeText( val.tooltip ) + "'>" + val.label + "</label>";
1074         }
1075
1076         moduleFilterHtml += "<label for='qunit-modulefilter'>Module: </label><select id='qunit-modulefilter' name='modulefilter'><option value='' " +
1077                 ( config.module === undefined  ? "selected='selected'" : "" ) +
1078                 ">< All Modules ></option>";
1079
1080         for ( i in config.modules ) {
1081                 if ( config.modules.hasOwnProperty( i ) ) {
1082                         numModules += 1;
1083                         moduleFilterHtml += "<option value='" + escapeText( encodeURIComponent(i) ) + "' " +
1084                                 ( config.module === i ? "selected='selected'" : "" ) +
1085                                 ">" + escapeText(i) + "</option>";
1086                 }
1087         }
1088         moduleFilterHtml += "</select>";
1089
1090         // `userAgent` initialized at top of scope
1091         userAgent = id( "qunit-userAgent" );
1092         if ( userAgent ) {
1093                 userAgent.innerHTML = navigator.userAgent;
1094         }
1095
1096         // `banner` initialized at top of scope
1097         banner = id( "qunit-header" );
1098         if ( banner ) {
1099                 banner.innerHTML = "<a href='" + QUnit.url({ filter: undefined, module: undefined, testNumber: undefined }) + "'>" + banner.innerHTML + "</a> ";
1100         }
1101
1102         // `toolbar` initialized at top of scope
1103         toolbar = id( "qunit-testrunner-toolbar" );
1104         if ( toolbar ) {
1105                 // `filter` initialized at top of scope
1106                 filter = document.createElement( "input" );
1107                 filter.type = "checkbox";
1108                 filter.id = "qunit-filter-pass";
1109
1110                 addEvent( filter, "click", function() {
1111                         var tmp,
1112                                 ol = document.getElementById( "qunit-tests" );
1113
1114                         if ( filter.checked ) {
1115                                 ol.className = ol.className + " hidepass";
1116                         } else {
1117                                 tmp = " " + ol.className.replace( /[\n\t\r]/g, " " ) + " ";
1118                                 ol.className = tmp.replace( / hidepass /, " " );
1119                         }
1120                         if ( defined.sessionStorage ) {
1121                                 if (filter.checked) {
1122                                         sessionStorage.setItem( "qunit-filter-passed-tests", "true" );
1123                                 } else {
1124                                         sessionStorage.removeItem( "qunit-filter-passed-tests" );
1125                                 }
1126                         }
1127                 });
1128
1129                 if ( config.hidepassed || defined.sessionStorage && sessionStorage.getItem( "qunit-filter-passed-tests" ) ) {
1130                         filter.checked = true;
1131                         // `ol` initialized at top of scope
1132                         ol = document.getElementById( "qunit-tests" );
1133                         ol.className = ol.className + " hidepass";
1134                 }
1135                 toolbar.appendChild( filter );
1136
1137                 // `label` initialized at top of scope
1138                 label = document.createElement( "label" );
1139                 label.setAttribute( "for", "qunit-filter-pass" );
1140                 label.setAttribute( "title", "Only show tests and assertons that fail. Stored in sessionStorage." );
1141                 label.innerHTML = "Hide passed tests";
1142                 toolbar.appendChild( label );
1143
1144                 urlConfigCheckboxesContainer = document.createElement("span");
1145                 urlConfigCheckboxesContainer.innerHTML = urlConfigHtml;
1146                 urlConfigCheckboxes = urlConfigCheckboxesContainer.getElementsByTagName("input");
1147                 // For oldIE support:
1148                 // * Add handlers to the individual elements instead of the container
1149                 // * Use "click" instead of "change"
1150                 // * Fallback from event.target to event.srcElement
1151                 addEvents( urlConfigCheckboxes, "click", function( event ) {
1152                         var params = {},
1153                                 target = event.target || event.srcElement;
1154                         params[ target.name ] = target.checked ? true : undefined;
1155                         window.location = QUnit.url( params );
1156                 });
1157                 toolbar.appendChild( urlConfigCheckboxesContainer );
1158
1159                 if (numModules > 1) {
1160                         moduleFilter = document.createElement( 'span' );
1161                         moduleFilter.setAttribute( 'id', 'qunit-modulefilter-container' );
1162                         moduleFilter.innerHTML = moduleFilterHtml;
1163                         addEvent( moduleFilter.lastChild, "change", function() {
1164                                 var selectBox = moduleFilter.getElementsByTagName("select")[0],
1165                                         selectedModule = decodeURIComponent(selectBox.options[selectBox.selectedIndex].value);
1166
1167                                 window.location = QUnit.url( { module: ( selectedModule === "" ) ? undefined : selectedModule } );
1168                         });
1169                         toolbar.appendChild(moduleFilter);
1170                 }
1171         }
1172
1173         // `main` initialized at top of scope
1174         main = id( "qunit-fixture" );
1175         if ( main ) {
1176                 config.fixture = main.innerHTML;
1177         }
1178
1179         if ( config.autostart ) {
1180                 QUnit.start();
1181         }
1182 };
1183
1184 addEvent( window, "load", QUnit.load );
1185
1186 // `onErrorFnPrev` initialized at top of scope
1187 // Preserve other handlers
1188 onErrorFnPrev = window.onerror;
1189
1190 // Cover uncaught exceptions
1191 // Returning true will surpress the default browser handler,
1192 // returning false will let it run.
1193 window.onerror = function ( error, filePath, linerNr ) {
1194         var ret = false;
1195         if ( onErrorFnPrev ) {
1196                 ret = onErrorFnPrev( error, filePath, linerNr );
1197         }
1198
1199         // Treat return value as window.onerror itself does,
1200         // Only do our handling if not surpressed.
1201         if ( ret !== true ) {
1202                 if ( QUnit.config.current ) {
1203                         if ( QUnit.config.current.ignoreGlobalErrors ) {
1204                                 return true;
1205                         }
1206                         QUnit.pushFailure( error, filePath + ":" + linerNr );
1207                 } else {
1208                         QUnit.test( "global failure", extend( function() {
1209                                 QUnit.pushFailure( error, filePath + ":" + linerNr );
1210                         }, { validTest: validTest } ) );
1211                 }
1212                 return false;
1213         }
1214
1215         return ret;
1216 };
1217
1218 function done() {
1219         config.autorun = true;
1220
1221         // Log the last module results
1222         if ( config.currentModule ) {
1223                 runLoggingCallbacks( "moduleDone", QUnit, {
1224                         name: config.currentModule,
1225                         failed: config.moduleStats.bad,
1226                         passed: config.moduleStats.all - config.moduleStats.bad,
1227                         total: config.moduleStats.all
1228                 });
1229         }
1230
1231         var i, key,
1232                 banner = id( "qunit-banner" ),
1233                 tests = id( "qunit-tests" ),
1234                 runtime = +new Date() - config.started,
1235                 passed = config.stats.all - config.stats.bad,
1236                 html = [
1237                         "Tests completed in ",
1238                         runtime,
1239                         " milliseconds.<br/>",
1240                         "<span class='passed'>",
1241                         passed,
1242                         "</span> assertions of <span class='total'>",
1243                         config.stats.all,
1244                         "</span> passed, <span class='failed'>",
1245                         config.stats.bad,
1246                         "</span> failed."
1247                 ].join( "" );
1248
1249         if ( banner ) {
1250                 banner.className = ( config.stats.bad ? "qunit-fail" : "qunit-pass" );
1251         }
1252
1253         if ( tests ) {
1254                 id( "qunit-testresult" ).innerHTML = html;
1255         }
1256
1257         if ( config.altertitle && typeof document !== "undefined" && document.title ) {
1258                 // show ✖ for good, ✔ for bad suite result in title
1259                 // use escape sequences in case file gets loaded with non-utf-8-charset
1260                 document.title = [
1261                         ( config.stats.bad ? "\u2716" : "\u2714" ),
1262                         document.title.replace( /^[\u2714\u2716] /i, "" )
1263                 ].join( " " );
1264         }
1265
1266         // clear own sessionStorage items if all tests passed
1267         if ( config.reorder && defined.sessionStorage && config.stats.bad === 0 ) {
1268                 // `key` & `i` initialized at top of scope
1269                 for ( i = 0; i < sessionStorage.length; i++ ) {
1270                         key = sessionStorage.key( i++ );
1271                         if ( key.indexOf( "qunit-test-" ) === 0 ) {
1272                                 sessionStorage.removeItem( key );
1273                         }
1274                 }
1275         }
1276
1277         // scroll back to top to show results
1278         if ( window.scrollTo ) {
1279                 window.scrollTo(0, 0);
1280         }
1281
1282         runLoggingCallbacks( "done", QUnit, {
1283                 failed: config.stats.bad,
1284                 passed: passed,
1285                 total: config.stats.all,
1286                 runtime: runtime
1287         });
1288 }
1289
1290 /** @return Boolean: true if this test should be ran */
1291 function validTest( test ) {
1292         var include,
1293                 filter = config.filter && config.filter.toLowerCase(),
1294                 module = config.module && config.module.toLowerCase(),
1295                 fullName = (test.module + ": " + test.testName).toLowerCase();
1296
1297         // Internally-generated tests are always valid
1298         if ( test.callback && test.callback.validTest === validTest ) {
1299                 delete test.callback.validTest;
1300                 return true;
1301         }
1302
1303         if ( config.testNumber ) {
1304                 return test.testNumber === config.testNumber;
1305         }
1306
1307         if ( module && ( !test.module || test.module.toLowerCase() !== module ) ) {
1308                 return false;
1309         }
1310
1311         if ( !filter ) {
1312                 return true;
1313         }
1314
1315         include = filter.charAt( 0 ) !== "!";
1316         if ( !include ) {
1317                 filter = filter.slice( 1 );
1318         }
1319
1320         // If the filter matches, we need to honour include
1321         if ( fullName.indexOf( filter ) !== -1 ) {
1322                 return include;
1323         }
1324
1325         // Otherwise, do the opposite
1326         return !include;
1327 }
1328
1329 // so far supports only Firefox, Chrome and Opera (buggy), Safari (for real exceptions)
1330 // Later Safari and IE10 are supposed to support error.stack as well
1331 // See also https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Error/Stack
1332 function extractStacktrace( e, offset ) {
1333         offset = offset === undefined ? 3 : offset;
1334
1335         var stack, include, i;
1336
1337         if ( e.stacktrace ) {
1338                 // Opera
1339                 return e.stacktrace.split( "\n" )[ offset + 3 ];
1340         } else if ( e.stack ) {
1341                 // Firefox, Chrome
1342                 stack = e.stack.split( "\n" );
1343                 if (/^error$/i.test( stack[0] ) ) {
1344                         stack.shift();
1345                 }
1346                 if ( fileName ) {
1347                         include = [];
1348                         for ( i = offset; i < stack.length; i++ ) {
1349                                 if ( stack[ i ].indexOf( fileName ) !== -1 ) {
1350                                         break;
1351                                 }
1352                                 include.push( stack[ i ] );
1353                         }
1354                         if ( include.length ) {
1355                                 return include.join( "\n" );
1356                         }
1357                 }
1358                 return stack[ offset ];
1359         } else if ( e.sourceURL ) {
1360                 // Safari, PhantomJS
1361                 // hopefully one day Safari provides actual stacktraces
1362                 // exclude useless self-reference for generated Error objects
1363                 if ( /qunit.js$/.test( e.sourceURL ) ) {
1364                         return;
1365                 }
1366                 // for actual exceptions, this is useful
1367                 return e.sourceURL + ":" + e.line;
1368         }
1369 }
1370 function sourceFromStacktrace( offset ) {
1371         try {
1372                 throw new Error();
1373         } catch ( e ) {
1374                 return extractStacktrace( e, offset );
1375         }
1376 }
1377
1378 /**
1379  * Escape text for attribute or text content.
1380  */
1381 function escapeText( s ) {
1382         if ( !s ) {
1383                 return "";
1384         }
1385         s = s + "";
1386         // Both single quotes and double quotes (for attributes)
1387         return s.replace( /['"<>&]/g, function( s ) {
1388                 switch( s ) {
1389                         case '\'':
1390                                 return '&#039;';
1391                         case '"':
1392                                 return '&quot;';
1393                         case '<':
1394                                 return '&lt;';
1395                         case '>':
1396                                 return '&gt;';
1397                         case '&':
1398                                 return '&amp;';
1399                 }
1400         });
1401 }
1402
1403 function synchronize( callback, last ) {
1404         config.queue.push( callback );
1405
1406         if ( config.autorun && !config.blocking ) {
1407                 process( last );
1408         }
1409 }
1410
1411 function process( last ) {
1412         function next() {
1413                 process( last );
1414         }
1415         var start = new Date().getTime();
1416         config.depth = config.depth ? config.depth + 1 : 1;
1417
1418         while ( config.queue.length && !config.blocking ) {
1419                 if ( !defined.setTimeout || config.updateRate <= 0 || ( ( new Date().getTime() - start ) < config.updateRate ) ) {
1420                         config.queue.shift()();
1421                 } else {
1422                         window.setTimeout( next, 13 );
1423                         break;
1424                 }
1425         }
1426         config.depth--;
1427         if ( last && !config.blocking && !config.queue.length && config.depth === 0 ) {
1428                 done();
1429         }
1430 }
1431
1432 function saveGlobal() {
1433         config.pollution = [];
1434
1435         if ( config.noglobals ) {
1436                 for ( var key in window ) {
1437                         // in Opera sometimes DOM element ids show up here, ignore them
1438                         if ( !hasOwn.call( window, key ) || /^qunit-test-output/.test( key ) ) {
1439                                 continue;
1440                         }
1441                         config.pollution.push( key );
1442                 }
1443         }
1444 }
1445
1446 function checkPollution() {
1447         var newGlobals,
1448                 deletedGlobals,
1449                 old = config.pollution;
1450
1451         saveGlobal();
1452
1453         newGlobals = diff( config.pollution, old );
1454         if ( newGlobals.length > 0 ) {
1455                 QUnit.pushFailure( "Introduced global variable(s): " + newGlobals.join(", ") );
1456         }
1457
1458         deletedGlobals = diff( old, config.pollution );
1459         if ( deletedGlobals.length > 0 ) {
1460                 QUnit.pushFailure( "Deleted global variable(s): " + deletedGlobals.join(", ") );
1461         }
1462 }
1463
1464 // returns a new Array with the elements that are in a but not in b
1465 function diff( a, b ) {
1466         var i, j,
1467                 result = a.slice();
1468
1469         for ( i = 0; i < result.length; i++ ) {
1470                 for ( j = 0; j < b.length; j++ ) {
1471                         if ( result[i] === b[j] ) {
1472                                 result.splice( i, 1 );
1473                                 i--;
1474                                 break;
1475                         }
1476                 }
1477         }
1478         return result;
1479 }
1480
1481 function extend( a, b ) {
1482         for ( var prop in b ) {
1483                 if ( b[ prop ] === undefined ) {
1484                         delete a[ prop ];
1485
1486                 // Avoid "Member not found" error in IE8 caused by setting window.constructor
1487                 } else if ( prop !== "constructor" || a !== window ) {
1488                         a[ prop ] = b[ prop ];
1489                 }
1490         }
1491
1492         return a;
1493 }
1494
1495 /**
1496  * @param {HTMLElement} elem
1497  * @param {string} type
1498  * @param {Function} fn
1499  */
1500 function addEvent( elem, type, fn ) {
1501         // Standards-based browsers
1502         if ( elem.addEventListener ) {
1503                 elem.addEventListener( type, fn, false );
1504         // IE
1505         } else {
1506                 elem.attachEvent( "on" + type, fn );
1507         }
1508 }
1509
1510 /**
1511  * @param {Array|NodeList} elems
1512  * @param {string} type
1513  * @param {Function} fn
1514  */
1515 function addEvents( elems, type, fn ) {
1516         var i = elems.length;
1517         while ( i-- ) {
1518                 addEvent( elems[i], type, fn );
1519         }
1520 }
1521
1522 function hasClass( elem, name ) {
1523         return (" " + elem.className + " ").indexOf(" " + name + " ") > -1;
1524 }
1525
1526 function addClass( elem, name ) {
1527         if ( !hasClass( elem, name ) ) {
1528                 elem.className += (elem.className ? " " : "") + name;
1529         }
1530 }
1531
1532 function removeClass( elem, name ) {
1533         var set = " " + elem.className + " ";
1534         // Class name may appear multiple times
1535         while ( set.indexOf(" " + name + " ") > -1 ) {
1536                 set = set.replace(" " + name + " " , " ");
1537         }
1538         // If possible, trim it for prettiness, but not neccecarily
1539         elem.className = window.jQuery ? jQuery.trim( set ) : ( set.trim ? set.trim() : set );
1540 }
1541
1542 function id( name ) {
1543         return !!( typeof document !== "undefined" && document && document.getElementById ) &&
1544                 document.getElementById( name );
1545 }
1546
1547 function registerLoggingCallback( key ) {
1548         return function( callback ) {
1549                 config[key].push( callback );
1550         };
1551 }
1552
1553 // Supports deprecated method of completely overwriting logging callbacks
1554 function runLoggingCallbacks( key, scope, args ) {
1555         var i, callbacks;
1556         if ( QUnit.hasOwnProperty( key ) ) {
1557                 QUnit[ key ].call(scope, args );
1558         } else {
1559                 callbacks = config[ key ];
1560                 for ( i = 0; i < callbacks.length; i++ ) {
1561                         callbacks[ i ].call( scope, args );
1562                 }
1563         }
1564 }
1565
1566 // Test for equality any JavaScript type.
1567 // Author: Philippe Rathé <prathe@gmail.com>
1568 QUnit.equiv = (function() {
1569
1570         // Call the o related callback with the given arguments.
1571         function bindCallbacks( o, callbacks, args ) {
1572                 var prop = QUnit.objectType( o );
1573                 if ( prop ) {
1574                         if ( QUnit.objectType( callbacks[ prop ] ) === "function" ) {
1575                                 return callbacks[ prop ].apply( callbacks, args );
1576                         } else {
1577                                 return callbacks[ prop ]; // or undefined
1578                         }
1579                 }
1580         }
1581
1582         // the real equiv function
1583         var innerEquiv,
1584                 // stack to decide between skip/abort functions
1585                 callers = [],
1586                 // stack to avoiding loops from circular referencing
1587                 parents = [],
1588
1589                 getProto = Object.getPrototypeOf || function ( obj ) {
1590                         return obj.__proto__;
1591                 },
1592                 callbacks = (function () {
1593
1594                         // for string, boolean, number and null
1595                         function useStrictEquality( b, a ) {
1596                                 /*jshint eqeqeq:false */
1597                                 if ( b instanceof a.constructor || a instanceof b.constructor ) {
1598                                         // to catch short annotaion VS 'new' annotation of a
1599                                         // declaration
1600                                         // e.g. var i = 1;
1601                                         // var j = new Number(1);
1602                                         return a == b;
1603                                 } else {
1604                                         return a === b;
1605                                 }
1606                         }
1607
1608                         return {
1609                                 "string": useStrictEquality,
1610                                 "boolean": useStrictEquality,
1611                                 "number": useStrictEquality,
1612                                 "null": useStrictEquality,
1613                                 "undefined": useStrictEquality,
1614
1615                                 "nan": function( b ) {
1616                                         return isNaN( b );
1617                                 },
1618
1619                                 "date": function( b, a ) {
1620                                         return QUnit.objectType( b ) === "date" && a.valueOf() === b.valueOf();
1621                                 },
1622
1623                                 "regexp": function( b, a ) {
1624                                         return QUnit.objectType( b ) === "regexp" &&
1625                                                 // the regex itself
1626                                                 a.source === b.source &&
1627                                                 // and its modifers
1628                                                 a.global === b.global &&
1629                                                 // (gmi) ...
1630                                                 a.ignoreCase === b.ignoreCase &&
1631                                                 a.multiline === b.multiline &&
1632                                                 a.sticky === b.sticky;
1633                                 },
1634
1635                                 // - skip when the property is a method of an instance (OOP)
1636                                 // - abort otherwise,
1637                                 // initial === would have catch identical references anyway
1638                                 "function": function() {
1639                                         var caller = callers[callers.length - 1];
1640                                         return caller !== Object && typeof caller !== "undefined";
1641                                 },
1642
1643                                 "array": function( b, a ) {
1644                                         var i, j, len, loop;
1645
1646                                         // b could be an object literal here
1647                                         if ( QUnit.objectType( b ) !== "array" ) {
1648                                                 return false;
1649                                         }
1650
1651                                         len = a.length;
1652                                         if ( len !== b.length ) {
1653                                                 // safe and faster
1654                                                 return false;
1655                                         }
1656
1657                                         // track reference to avoid circular references
1658                                         parents.push( a );
1659                                         for ( i = 0; i < len; i++ ) {
1660                                                 loop = false;
1661                                                 for ( j = 0; j < parents.length; j++ ) {
1662                                                         if ( parents[j] === a[i] ) {
1663                                                                 loop = true;// dont rewalk array
1664                                                         }
1665                                                 }
1666                                                 if ( !loop && !innerEquiv(a[i], b[i]) ) {
1667                                                         parents.pop();
1668                                                         return false;
1669                                                 }
1670                                         }
1671                                         parents.pop();
1672                                         return true;
1673                                 },
1674
1675                                 "object": function( b, a ) {
1676                                         var i, j, loop,
1677                                                 // Default to true
1678                                                 eq = true,
1679                                                 aProperties = [],
1680                                                 bProperties = [];
1681
1682                                         // comparing constructors is more strict than using
1683                                         // instanceof
1684                                         if ( a.constructor !== b.constructor ) {
1685                                                 // Allow objects with no prototype to be equivalent to
1686                                                 // objects with Object as their constructor.
1687                                                 if ( !(( getProto(a) === null && getProto(b) === Object.prototype ) ||
1688                                                         ( getProto(b) === null && getProto(a) === Object.prototype ) ) ) {
1689                                                                 return false;
1690                                                 }
1691                                         }
1692
1693                                         // stack constructor before traversing properties
1694                                         callers.push( a.constructor );
1695                                         // track reference to avoid circular references
1696                                         parents.push( a );
1697
1698                                         for ( i in a ) { // be strict: don't ensures hasOwnProperty
1699                                                                         // and go deep
1700                                                 loop = false;
1701                                                 for ( j = 0; j < parents.length; j++ ) {
1702                                                         if ( parents[j] === a[i] ) {
1703                                                                 // don't go down the same path twice
1704                                                                 loop = true;
1705                                                         }
1706                                                 }
1707                                                 aProperties.push(i); // collect a's properties
1708
1709                                                 if (!loop && !innerEquiv( a[i], b[i] ) ) {
1710                                                         eq = false;
1711                                                         break;
1712                                                 }
1713                                         }
1714
1715                                         callers.pop(); // unstack, we are done
1716                                         parents.pop();
1717
1718                                         for ( i in b ) {
1719                                                 bProperties.push( i ); // collect b's properties
1720                                         }
1721
1722                                         // Ensures identical properties name
1723                                         return eq && innerEquiv( aProperties.sort(), bProperties.sort() );
1724                                 }
1725                         };
1726                 }());
1727
1728         innerEquiv = function() { // can take multiple arguments
1729                 var args = [].slice.apply( arguments );
1730                 if ( args.length < 2 ) {
1731                         return true; // end transition
1732                 }
1733
1734                 return (function( a, b ) {
1735                         if ( a === b ) {
1736                                 return true; // catch the most you can
1737                         } else if ( a === null || b === null || typeof a === "undefined" ||
1738                                         typeof b === "undefined" ||
1739                                         QUnit.objectType(a) !== QUnit.objectType(b) ) {
1740                                 return false; // don't lose time with error prone cases
1741                         } else {
1742                                 return bindCallbacks(a, callbacks, [ b, a ]);
1743                         }
1744
1745                         // apply transition with (1..n) arguments
1746                 }( args[0], args[1] ) && arguments.callee.apply( this, args.splice(1, args.length - 1 )) );
1747         };
1748
1749         return innerEquiv;
1750 }());
1751
1752 /**
1753  * jsDump Copyright (c) 2008 Ariel Flesler - aflesler(at)gmail(dot)com |
1754  * http://flesler.blogspot.com Licensed under BSD
1755  * (http://www.opensource.org/licenses/bsd-license.php) Date: 5/15/2008
1756  *
1757  * @projectDescription Advanced and extensible data dumping for Javascript.
1758  * @version 1.0.0
1759  * @author Ariel Flesler
1760  * @link {http://flesler.blogspot.com/2008/05/jsdump-pretty-dump-of-any-javascript.html}
1761  */
1762 QUnit.jsDump = (function() {
1763         function quote( str ) {
1764                 return '"' + str.toString().replace( /"/g, '\\"' ) + '"';
1765         }
1766         function literal( o ) {
1767                 return o + "";
1768         }
1769         function join( pre, arr, post ) {
1770                 var s = jsDump.separator(),
1771                         base = jsDump.indent(),
1772                         inner = jsDump.indent(1);
1773                 if ( arr.join ) {
1774                         arr = arr.join( "," + s + inner );
1775                 }
1776                 if ( !arr ) {
1777                         return pre + post;
1778                 }
1779                 return [ pre, inner + arr, base + post ].join(s);
1780         }
1781         function array( arr, stack ) {
1782                 var i = arr.length, ret = new Array(i);
1783                 this.up();
1784                 while ( i-- ) {
1785                         ret[i] = this.parse( arr[i] , undefined , stack);
1786                 }
1787                 this.down();
1788                 return join( "[", ret, "]" );
1789         }
1790
1791         var reName = /^function (\w+)/,
1792                 jsDump = {
1793                         // type is used mostly internally, you can fix a (custom)type in advance
1794                         parse: function( obj, type, stack ) {
1795                                 stack = stack || [ ];
1796                                 var inStack, res,
1797                                         parser = this.parsers[ type || this.typeOf(obj) ];
1798
1799                                 type = typeof parser;
1800                                 inStack = inArray( obj, stack );
1801
1802                                 if ( inStack !== -1 ) {
1803                                         return "recursion(" + (inStack - stack.length) + ")";
1804                                 }
1805                                 if ( type === "function" )  {
1806                                         stack.push( obj );
1807                                         res = parser.call( this, obj, stack );
1808                                         stack.pop();
1809                                         return res;
1810                                 }
1811                                 return ( type === "string" ) ? parser : this.parsers.error;
1812                         },
1813                         typeOf: function( obj ) {
1814                                 var type;
1815                                 if ( obj === null ) {
1816                                         type = "null";
1817                                 } else if ( typeof obj === "undefined" ) {
1818                                         type = "undefined";
1819                                 } else if ( QUnit.is( "regexp", obj) ) {
1820                                         type = "regexp";
1821                                 } else if ( QUnit.is( "date", obj) ) {
1822                                         type = "date";
1823                                 } else if ( QUnit.is( "function", obj) ) {
1824                                         type = "function";
1825                                 } else if ( typeof obj.setInterval !== undefined && typeof obj.document !== "undefined" && typeof obj.nodeType === "undefined" ) {
1826                                         type = "window";
1827                                 } else if ( obj.nodeType === 9 ) {
1828                                         type = "document";
1829                                 } else if ( obj.nodeType ) {
1830                                         type = "node";
1831                                 } else if (
1832                                         // native arrays
1833                                         toString.call( obj ) === "[object Array]" ||
1834                                         // NodeList objects
1835                                         ( typeof obj.length === "number" && typeof obj.item !== "undefined" && ( obj.length ? obj.item(0) === obj[0] : ( obj.item( 0 ) === null && typeof obj[0] === "undefined" ) ) )
1836                                 ) {
1837                                         type = "array";
1838                                 } else if ( obj.constructor === Error.prototype.constructor ) {
1839                                         type = "error";
1840                                 } else {
1841                                         type = typeof obj;
1842                                 }
1843                                 return type;
1844                         },
1845                         separator: function() {
1846                                 return this.multiline ? this.HTML ? "<br />" : "\n" : this.HTML ? "&nbsp;" : " ";
1847                         },
1848                         // extra can be a number, shortcut for increasing-calling-decreasing
1849                         indent: function( extra ) {
1850                                 if ( !this.multiline ) {
1851                                         return "";
1852                                 }
1853                                 var chr = this.indentChar;
1854                                 if ( this.HTML ) {
1855                                         chr = chr.replace( /\t/g, "   " ).replace( / /g, "&nbsp;" );
1856                                 }
1857                                 return new Array( this._depth_ + (extra||0) ).join(chr);
1858                         },
1859                         up: function( a ) {
1860                                 this._depth_ += a || 1;
1861                         },
1862                         down: function( a ) {
1863                                 this._depth_ -= a || 1;
1864                         },
1865                         setParser: function( name, parser ) {
1866                                 this.parsers[name] = parser;
1867                         },
1868                         // The next 3 are exposed so you can use them
1869                         quote: quote,
1870                         literal: literal,
1871                         join: join,
1872                         //
1873                         _depth_: 1,
1874                         // This is the list of parsers, to modify them, use jsDump.setParser
1875                         parsers: {
1876                                 window: "[Window]",
1877                                 document: "[Document]",
1878                                 error: function(error) {
1879                                         return "Error(\"" + error.message + "\")";
1880                                 },
1881                                 unknown: "[Unknown]",
1882                                 "null": "null",
1883                                 "undefined": "undefined",
1884                                 "function": function( fn ) {
1885                                         var ret = "function",
1886                                                 // functions never have name in IE
1887                                                 name = "name" in fn ? fn.name : (reName.exec(fn) || [])[1];
1888
1889                                         if ( name ) {
1890                                                 ret += " " + name;
1891                                         }
1892                                         ret += "( ";
1893
1894                                         ret = [ ret, QUnit.jsDump.parse( fn, "functionArgs" ), "){" ].join( "" );
1895                                         return join( ret, QUnit.jsDump.parse(fn,"functionCode" ), "}" );
1896                                 },
1897                                 array: array,
1898                                 nodelist: array,
1899                                 "arguments": array,
1900                                 object: function( map, stack ) {
1901                                         var ret = [ ], keys, key, val, i;
1902                                         QUnit.jsDump.up();
1903                                         keys = [];
1904                                         for ( key in map ) {
1905                                                 keys.push( key );
1906                                         }
1907                                         keys.sort();
1908                                         for ( i = 0; i < keys.length; i++ ) {
1909                                                 key = keys[ i ];
1910                                                 val = map[ key ];
1911                                                 ret.push( QUnit.jsDump.parse( key, "key" ) + ": " + QUnit.jsDump.parse( val, undefined, stack ) );
1912                                         }
1913                                         QUnit.jsDump.down();
1914                                         return join( "{", ret, "}" );
1915                                 },
1916                                 node: function( node ) {
1917                                         var len, i, val,
1918                                                 open = QUnit.jsDump.HTML ? "&lt;" : "<",
1919                                                 close = QUnit.jsDump.HTML ? "&gt;" : ">",
1920                                                 tag = node.nodeName.toLowerCase(),
1921                                                 ret = open + tag,
1922                                                 attrs = node.attributes;
1923
1924                                         if ( attrs ) {
1925                                                 for ( i = 0, len = attrs.length; i < len; i++ ) {
1926                                                         val = attrs[i].nodeValue;
1927                                                         // IE6 includes all attributes in .attributes, even ones not explicitly set.
1928                                                         // Those have values like undefined, null, 0, false, "" or "inherit".
1929                                                         if ( val && val !== "inherit" ) {
1930                                                                 ret += " " + attrs[i].nodeName + "=" + QUnit.jsDump.parse( val, "attribute" );
1931                                                         }
1932                                                 }
1933                                         }
1934                                         ret += close;
1935
1936                                         // Show content of TextNode or CDATASection
1937                                         if ( node.nodeType === 3 || node.nodeType === 4 ) {
1938                                                 ret += node.nodeValue;
1939                                         }
1940
1941                                         return ret + open + "/" + tag + close;
1942                                 },
1943                                 // function calls it internally, it's the arguments part of the function
1944                                 functionArgs: function( fn ) {
1945                                         var args,
1946                                                 l = fn.length;
1947
1948                                         if ( !l ) {
1949                                                 return "";
1950                                         }
1951
1952                                         args = new Array(l);
1953                                         while ( l-- ) {
1954                                                 // 97 is 'a'
1955                                                 args[l] = String.fromCharCode(97+l);
1956                                         }
1957                                         return " " + args.join( ", " ) + " ";
1958                                 },
1959                                 // object calls it internally, the key part of an item in a map
1960                                 key: quote,
1961                                 // function calls it internally, it's the content of the function
1962                                 functionCode: "[code]",
1963                                 // node calls it internally, it's an html attribute value
1964                                 attribute: quote,
1965                                 string: quote,
1966                                 date: quote,
1967                                 regexp: literal,
1968                                 number: literal,
1969                                 "boolean": literal
1970                         },
1971                         // if true, entities are escaped ( <, >, \t, space and \n )
1972                         HTML: false,
1973                         // indentation unit
1974                         indentChar: "  ",
1975                         // if true, items in a collection, are separated by a \n, else just a space.
1976                         multiline: true
1977                 };
1978
1979         return jsDump;
1980 }());
1981
1982 // from jquery.js
1983 function inArray( elem, array ) {
1984         if ( array.indexOf ) {
1985                 return array.indexOf( elem );
1986         }
1987
1988         for ( var i = 0, length = array.length; i < length; i++ ) {
1989                 if ( array[ i ] === elem ) {
1990                         return i;
1991                 }
1992         }
1993
1994         return -1;
1995 }
1996
1997 /*
1998  * Javascript Diff Algorithm
1999  *  By John Resig (http://ejohn.org/)
2000  *  Modified by Chu Alan "sprite"
2001  *
2002  * Released under the MIT license.
2003  *
2004  * More Info:
2005  *  http://ejohn.org/projects/javascript-diff-algorithm/
2006  *
2007  * Usage: QUnit.diff(expected, actual)
2008  *
2009  * QUnit.diff( "the quick brown fox jumped over", "the quick fox jumps over" ) == "the  quick <del>brown </del> fox <del>jumped </del><ins>jumps </ins> over"
2010  */
2011 QUnit.diff = (function() {
2012         /*jshint eqeqeq:false, eqnull:true */
2013         function diff( o, n ) {
2014                 var i,
2015                         ns = {},
2016                         os = {};
2017
2018                 for ( i = 0; i < n.length; i++ ) {
2019                         if ( !hasOwn.call( ns, n[i] ) ) {
2020                                 ns[ n[i] ] = {
2021                                         rows: [],
2022                                         o: null
2023                                 };
2024                         }
2025                         ns[ n[i] ].rows.push( i );
2026                 }
2027
2028                 for ( i = 0; i < o.length; i++ ) {
2029                         if ( !hasOwn.call( os, o[i] ) ) {
2030                                 os[ o[i] ] = {
2031                                         rows: [],
2032                                         n: null
2033                                 };
2034                         }
2035                         os[ o[i] ].rows.push( i );
2036                 }
2037
2038                 for ( i in ns ) {
2039                         if ( !hasOwn.call( ns, i ) ) {
2040                                 continue;
2041                         }
2042                         if ( ns[i].rows.length === 1 && hasOwn.call( os, i ) && os[i].rows.length === 1 ) {
2043                                 n[ ns[i].rows[0] ] = {
2044                                         text: n[ ns[i].rows[0] ],
2045                                         row: os[i].rows[0]
2046                                 };
2047                                 o[ os[i].rows[0] ] = {
2048                                         text: o[ os[i].rows[0] ],
2049                                         row: ns[i].rows[0]
2050                                 };
2051                         }
2052                 }
2053
2054                 for ( i = 0; i < n.length - 1; i++ ) {
2055                         if ( n[i].text != null && n[ i + 1 ].text == null && n[i].row + 1 < o.length && o[ n[i].row + 1 ].text == null &&
2056                                                 n[ i + 1 ] == o[ n[i].row + 1 ] ) {
2057
2058                                 n[ i + 1 ] = {
2059                                         text: n[ i + 1 ],
2060                                         row: n[i].row + 1
2061                                 };
2062                                 o[ n[i].row + 1 ] = {
2063                                         text: o[ n[i].row + 1 ],
2064                                         row: i + 1
2065                                 };
2066                         }
2067                 }
2068
2069                 for ( i = n.length - 1; i > 0; i-- ) {
2070                         if ( n[i].text != null && n[ i - 1 ].text == null && n[i].row > 0 && o[ n[i].row - 1 ].text == null &&
2071                                                 n[ i - 1 ] == o[ n[i].row - 1 ]) {
2072
2073                                 n[ i - 1 ] = {
2074                                         text: n[ i - 1 ],
2075                                         row: n[i].row - 1
2076                                 };
2077                                 o[ n[i].row - 1 ] = {
2078                                         text: o[ n[i].row - 1 ],
2079                                         row: i - 1
2080                                 };
2081                         }
2082                 }
2083
2084                 return {
2085                         o: o,
2086                         n: n
2087                 };
2088         }
2089
2090         return function( o, n ) {
2091                 o = o.replace( /\s+$/, "" );
2092                 n = n.replace( /\s+$/, "" );
2093
2094                 var i, pre,
2095                         str = "",
2096                         out = diff( o === "" ? [] : o.split(/\s+/), n === "" ? [] : n.split(/\s+/) ),
2097                         oSpace = o.match(/\s+/g),
2098                         nSpace = n.match(/\s+/g);
2099
2100                 if ( oSpace == null ) {
2101                         oSpace = [ " " ];
2102                 }
2103                 else {
2104                         oSpace.push( " " );
2105                 }
2106
2107                 if ( nSpace == null ) {
2108                         nSpace = [ " " ];
2109                 }
2110                 else {
2111                         nSpace.push( " " );
2112                 }
2113
2114                 if ( out.n.length === 0 ) {
2115                         for ( i = 0; i < out.o.length; i++ ) {
2116                                 str += "<del>" + out.o[i] + oSpace[i] + "</del>";
2117                         }
2118                 }
2119                 else {
2120                         if ( out.n[0].text == null ) {
2121                                 for ( n = 0; n < out.o.length && out.o[n].text == null; n++ ) {
2122                                         str += "<del>" + out.o[n] + oSpace[n] + "</del>";
2123                                 }
2124                         }
2125
2126                         for ( i = 0; i < out.n.length; i++ ) {
2127                                 if (out.n[i].text == null) {
2128                                         str += "<ins>" + out.n[i] + nSpace[i] + "</ins>";
2129                                 }
2130                                 else {
2131                                         // `pre` initialized at top of scope
2132                                         pre = "";
2133
2134                                         for ( n = out.n[i].row + 1; n < out.o.length && out.o[n].text == null; n++ ) {
2135                                                 pre += "<del>" + out.o[n] + oSpace[n] + "</del>";
2136                                         }
2137                                         str += " " + out.n[i].text + nSpace[i] + pre;
2138                                 }
2139                         }
2140                 }
2141
2142                 return str;
2143         };
2144 }());
2145
2146 // for CommonJS enviroments, export everything
2147 if ( typeof exports !== "undefined" ) {
2148         extend( exports, QUnit );
2149 }
2150
2151 // get at whatever the global object is, like window in browsers
2152 }( (function() {return this;}.call()) ));