test/unit/deferred.js

   1 module( "deferred", {
   2         teardown: moduleTeardown
   3 });
   4
   5 jQuery.each( [ "", " - new operator" ], function( _, withNew ) {
   6
   7         function createDeferred( fn ) {
   8                 return withNew ? new jQuery.Deferred( fn ) : jQuery.Deferred( fn );
   9         }
  10
  11         test( "jQuery.Deferred" + withNew, function() {
  12
  13                 expect( 23 );
  14
  15                 var defer = createDeferred();
  16
  17                 ok( jQuery.isFunction( defer.pipe ), "defer.pipe is a function" );
  18
  19                 createDeferred().resolve().done(function() {
  20                         ok( true, "Success on resolve" );
  21                         strictEqual( this.state(), "resolved", "Deferred is resolved (state)" );
  22                 }).fail(function() {
  23                         ok( false, "Error on resolve" );
  24                 }).always(function() {
  25                         ok( true, "Always callback on resolve" );
  26                 });
  27
  28                 createDeferred().reject().done(function() {
  29                         ok( false, "Success on reject" );
  30                 }).fail(function() {
  31                         ok( true, "Error on reject" );
  32                         strictEqual( this.state(), "rejected", "Deferred is rejected (state)" );
  33                 }).always(function() {
  34                         ok( true, "Always callback on reject" );
  35                 });
  36
  37                 createDeferred(function( defer ) {
  38                         ok( this === defer, "Defer passed as this & first argument" );
  39                         this.resolve("done");
  40                 }).done(function( value ) {
  41                         strictEqual( value, "done", "Passed function executed" );
  42                 });
  43
  44                 createDeferred(function( defer ) {
  45                         var promise = defer.promise(),
  46                                 func = function() {},
  47                                 funcPromise = defer.promise( func );
  48                         strictEqual( defer.promise(), promise, "promise is always the same" );
  49                         strictEqual( funcPromise, func, "non objects get extended" );
  50                         jQuery.each( promise, function( key ) {
  51                                 if ( !jQuery.isFunction( promise[ key ] ) ) {
  52                                         ok( false, key + " is a function (" + jQuery.type( promise[ key ] ) + ")" );
  53                                 }
  54                                 if ( promise[ key ] !== func[ key ] ) {
  55                                         strictEqual( func[ key ], promise[ key ], key + " is the same" );
  56                                 }
  57                         });
  58                 });
  59
  60                 jQuery.expandedEach = jQuery.each;
  61                 jQuery.expandedEach( "resolve reject".split(" "), function( _, change ) {
  62                         createDeferred(function( defer ) {
  63                                 strictEqual( defer.state(), "pending", "pending after creation" );
  64                                 var checked = 0;
  65                                 defer.progress(function( value ) {
  66                                         strictEqual( value, checked, "Progress: right value (" + value + ") received" );
  67                                 });
  68                                 for ( checked = 0; checked < 3; checked++ ) {
  69                                         defer.notify( checked );
  70                                 }
  71                                 strictEqual( defer.state(), "pending", "pending after notification" );
  72                                 defer[ change ]();
  73                                 notStrictEqual( defer.state(), "pending", "not pending after " + change );
  74                                 defer.notify();
  75                         });
  76                 });
  77         });
  78 });
  79
  80
  81 test( "jQuery.Deferred - chainability", function() {
  82
  83         var defer = jQuery.Deferred();
  84
  85         expect( 10 );
  86
  87         jQuery.expandedEach = jQuery.each;
  88         jQuery.expandedEach( "resolve reject notify resolveWith rejectWith notifyWith done fail progress always".split(" "), function( _, method ) {
  89                 var object = {
  90                         m: defer[ method ]
  91                 };
  92                 strictEqual( object.m(), object, method + " is chainable" );
  93         });
  94 });
  95
  96 test( "jQuery.Deferred.then - filtering (done)", function( assert ) {
  97
  98         assert.expect( 4 );
  99
 100         var value1, value2, value3,
 101                 defer = jQuery.Deferred(),
 102                 piped = defer.then(function( a, b ) {
 103                         return a * b;
 104                 }),
 105                 done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
 106
 107         piped.done(function( result ) {
 108                 value3 = result;
 109         });
 110
 111         defer.done(function( a, b ) {
 112                 value1 = a;
 113                 value2 = b;
 114         });
 115
 116         defer.resolve( 2, 3 ).then(function() {
 117                 assert.strictEqual( value1, 2, "first resolve value ok" );
 118                 assert.strictEqual( value2, 3, "second resolve value ok" );
 119                 assert.strictEqual( value3, 6, "result of filter ok" );
 120                 done.pop().call();
 121         });
 122
 123         jQuery.Deferred().reject().then(function() {
 124                 assert.ok( false, "then should not be called on reject" );
 125         }).then( null, done.pop() );
 126
 127         jQuery.Deferred().resolve().then( jQuery.noop ).done(function( value ) {
 128                 assert.strictEqual( value, undefined, "then done callback can return undefined/null" );
 129                 done.pop().call();
 130         });
 131 });
 132
 133 test( "jQuery.Deferred.then - filtering (fail)", function( assert ) {
 134
 135         assert.expect( 4 );
 136
 137         var value1, value2, value3,
 138                 defer = jQuery.Deferred(),
 139                 piped = defer.then( null, function( a, b ) {
 140                         return a * b;
 141                 }),
 142                 done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
 143
 144         piped.done(function( result ) {
 145                 value3 = result;
 146         });
 147
 148         defer.fail(function( a, b ) {
 149                 value1 = a;
 150                 value2 = b;
 151         });
 152
 153         defer.reject( 2, 3 ).then( null, function() {
 154                 assert.strictEqual( value1, 2, "first reject value ok" );
 155                 assert.strictEqual( value2, 3, "second reject value ok" );
 156                 assert.strictEqual( value3, 6, "result of filter ok" );
 157                 done.pop().call();
 158         });
 159
 160         jQuery.Deferred().resolve().then( null, function() {
 161                 assert.ok( false, "then should not be called on resolve" );
 162         }).then( done.pop() );
 163
 164         jQuery.Deferred().reject().then( null, jQuery.noop ).done(function( value ) {
 165                 assert.strictEqual( value, undefined, "then fail callback can return undefined/null" );
 166                 done.pop().call();
 167         });
 168 });
 169
 170 test( "[PIPE ONLY] jQuery.Deferred.pipe - filtering (fail)", function( assert ) {
 171
 172         assert.expect( 4 );
 173
 174         var value1, value2, value3,
 175                 defer = jQuery.Deferred(),
 176                 piped = defer.pipe( null, function( a, b ) {
 177                         return a * b;
 178                 }),
 179                 done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
 180
 181         piped.fail(function( result ) {
 182                 value3 = result;
 183         });
 184
 185         defer.fail(function( a, b ) {
 186                 value1 = a;
 187                 value2 = b;
 188         });
 189
 190         defer.reject( 2, 3 ).pipe( null, function() {
 191                 assert.strictEqual( value1, 2, "first reject value ok" );
 192                 assert.strictEqual( value2, 3, "second reject value ok" );
 193                 assert.strictEqual( value3, 6, "result of filter ok" );
 194                 done.pop().call();
 195         });
 196
 197         jQuery.Deferred().resolve().pipe( null, function() {
 198                 assert.ok( false, "then should not be called on resolve" );
 199         }).then( done.pop() );
 200
 201         jQuery.Deferred().reject().pipe( null, jQuery.noop ).fail(function( value ) {
 202                 assert.strictEqual( value, undefined, "then fail callback can return undefined/null" );
 203                 done.pop().call();
 204         });
 205 });
 206
 207 test( "jQuery.Deferred.then - filtering (progress)", function( assert ) {
 208
 209         assert.expect( 3 );
 210
 211         var value1, value2, value3,
 212                 defer = jQuery.Deferred(),
 213                 piped = defer.then( null, null, function( a, b ) {
 214                         return a * b;
 215                 }),
 216                 done = assert.async();
 217
 218         piped.progress(function( result ) {
 219                 value3 = result;
 220         });
 221
 222         defer.progress(function( a, b ) {
 223                 value1 = a;
 224                 value2 = b;
 225         });
 226
 227         defer.notify( 2, 3 ).then( null, null, function() {
 228                 assert.strictEqual( value1, 2, "first progress value ok" );
 229                 assert.strictEqual( value2, 3, "second progress value ok" );
 230                 assert.strictEqual( value3, 6, "result of filter ok" );
 231                 done();
 232         });
 233 });
 234
 235 test( "jQuery.Deferred.then - deferred (done)", function( assert ) {
 236
 237         assert.expect( 3 );
 238
 239         var value1, value2, value3,
 240                 defer = jQuery.Deferred(),
 241                 piped = defer.then(function( a, b ) {
 242                         return jQuery.Deferred(function( defer ) {
 243                                 defer.reject( a * b );
 244                         });
 245                 }),
 246                 done = assert.async();
 247
 248         piped.fail(function( result ) {
 249                 value3 = result;
 250         });
 251
 252         defer.done(function( a, b ) {
 253                 value1 = a;
 254                 value2 = b;
 255         });
 256
 257         defer.resolve( 2, 3 );
 258
 259         piped.fail(function() {
 260                 assert.strictEqual( value1, 2, "first resolve value ok" );
 261                 assert.strictEqual( value2, 3, "second resolve value ok" );
 262                 assert.strictEqual( value3, 6, "result of filter ok" );
 263                 done();
 264         });
 265 });
 266
 267 test( "jQuery.Deferred.then - deferred (fail)", function( assert ) {
 268
 269         assert.expect( 3 );
 270
 271         var value1, value2, value3,
 272                 defer = jQuery.Deferred(),
 273                 piped = defer.then( null, function( a, b ) {
 274                         return jQuery.Deferred(function( defer ) {
 275                                 defer.resolve( a * b );
 276                         });
 277                 }),
 278                 done = assert.async();
 279
 280         piped.done(function( result ) {
 281                 value3 = result;
 282         });
 283
 284         defer.fail(function( a, b ) {
 285                 value1 = a;
 286                 value2 = b;
 287         });
 288
 289         defer.reject( 2, 3 );
 290
 291         piped.done(function() {
 292                 assert.strictEqual( value1, 2, "first reject value ok" );
 293                 assert.strictEqual( value2, 3, "second reject value ok" );
 294                 assert.strictEqual( value3, 6, "result of filter ok" );
 295                 done();
 296         });
 297 });
 298
 299 test( "jQuery.Deferred.then - deferred (progress)", function( assert ) {
 300
 301         assert.expect( 3 );
 302
 303         var value1, value2, value3,
 304                 defer = jQuery.Deferred(),
 305                 piped = defer.then( null, null, function( a, b ) {
 306                         return jQuery.Deferred(function( defer ) {
 307                                 defer.resolve( a * b );
 308                         });
 309                 }),
 310                 done = assert.async();
 311
 312         piped.progress(function( result ) {
 313                 return jQuery.Deferred().resolve().then(function() {
 314                         return result;
 315                 }).then(function( result ) {
 316                         value3 = result;
 317                 });
 318         });
 319
 320         defer.progress(function( a, b ) {
 321                 value1 = a;
 322                 value2 = b;
 323         });
 324
 325         defer.notify( 2, 3 );
 326
 327         piped.then( null, null, function( result ) {
 328                 return jQuery.Deferred().resolve().then(function() {
 329                         return result;
 330                 }).then(function() {
 331                         assert.strictEqual( value1, 2, "first progress value ok" );
 332                         assert.strictEqual( value2, 3, "second progress value ok" );
 333                         assert.strictEqual( value3, 6, "result of filter ok" );
 334                         done();
 335                 });
 336         });
 337 });
 338
 339 test( "[PIPE ONLY] jQuery.Deferred.pipe - deferred (progress)", function( assert ) {
 340
 341         assert.expect( 3 );
 342
 343         var value1, value2, value3,
 344                 defer = jQuery.Deferred(),
 345                 piped = defer.pipe( null, null, function( a, b ) {
 346                         return jQuery.Deferred(function( defer ) {
 347                                 defer.resolve( a * b );
 348                         });
 349                 }),
 350                 done = assert.async();
 351
 352         piped.done(function( result ) {
 353                 value3 = result;
 354         });
 355
 356         defer.progress(function( a, b ) {
 357                 value1 = a;
 358                 value2 = b;
 359         });
 360
 361         defer.notify( 2, 3 );
 362
 363         piped.done(function() {
 364                 assert.strictEqual( value1, 2, "first progress value ok" );
 365                 assert.strictEqual( value2, 3, "second progress value ok" );
 366                 assert.strictEqual( value3, 6, "result of filter ok" );
 367                 done();
 368         });
 369 });
 370
 371 test( "jQuery.Deferred.then - context", function( assert ) {
 372
 373         assert.expect( 7 );
 374
 375         var defer, piped, defer2, piped2,
 376                 context = {},
 377                 done = jQuery.map( new Array( 4 ), function() { return assert.async(); } );
 378
 379         jQuery.Deferred().resolveWith( context, [ 2 ] ).then(function( value ) {
 380                 return value * 3;
 381         }).done(function( value ) {
 382                 assert.notStrictEqual( this, context, "custom context not propagated through .then" );
 383                 assert.strictEqual( value, 6, "proper value received" );
 384                 done.pop().call();
 385         });
 386
 387         jQuery.Deferred().resolve().then(function() {
 388                 return jQuery.Deferred().resolveWith( context );
 389         }).done(function() {
 390                 assert.strictEqual( this, context,
 391                         "custom context of returned deferred correctly propagated" );
 392                 done.pop().call();
 393         });
 394
 395         defer = jQuery.Deferred();
 396         piped = defer.then(function( value ) {
 397                 return value * 3;
 398         });
 399
 400         defer.resolve( 2 );
 401
 402         piped.done(function( value ) {
 403                 assert.strictEqual( this, piped,
 404                         "default context gets updated to latest promise in the chain" );
 405                 assert.strictEqual( value, 6, "proper value received" );
 406                 done.pop().call();
 407         });
 408
 409         defer2 = jQuery.Deferred();
 410         piped2 = defer2.then();
 411
 412         defer2.resolve( 2 );
 413
 414         piped2.done(function( value ) {
 415                 assert.strictEqual( this, piped2,
 416                         "default context updated to latest promise in the chain (without passing function)" );
 417                 assert.strictEqual( value, 2, "proper value received (without passing function)" );
 418                 done.pop().call();
 419         });
 420 });
 421
 422 test( "[PIPE ONLY] jQuery.Deferred.pipe - context", function( assert ) {
 423
 424         assert.expect( 7 );
 425
 426         var defer, piped, defer2, piped2,
 427                 context = {},
 428                 done = jQuery.map( new Array( 4 ), function() { return assert.async(); } );
 429
 430         jQuery.Deferred().resolveWith( context, [ 2 ] ).pipe(function( value ) {
 431                 return value * 3;
 432         }).done(function( value ) {
 433                 assert.strictEqual( this, context, "[PIPE ONLY] custom context correctly propagated" );
 434                 assert.strictEqual( value, 6, "proper value received" );
 435                 done.pop().call();
 436         });
 437
 438         jQuery.Deferred().resolve().pipe(function() {
 439                 return jQuery.Deferred().resolveWith(context);
 440         }).done(function() {
 441                 assert.strictEqual( this, context,
 442                         "custom context of returned deferred correctly propagated" );
 443                 done.pop().call();
 444         });
 445
 446         defer = jQuery.Deferred();
 447         piped = defer.pipe(function( value ) {
 448                 return value * 3;
 449         });
 450
 451         defer.resolve( 2 );
 452
 453         piped.done(function( value ) {
 454                 assert.strictEqual( this, piped,
 455                         "default context gets updated to latest promise in the chain" );
 456                 assert.strictEqual( value, 6, "proper value received" );
 457                 done.pop().call();
 458         });
 459
 460         defer2 = jQuery.Deferred();
 461         piped2 = defer2.pipe();
 462
 463         defer2.resolve( 2 );
 464
 465         piped2.done(function( value ) {
 466                 assert.strictEqual( this, piped2,
 467                         "default context updated to latest promise in the chain (without passing function)" );
 468                 assert.strictEqual( value, 2, "proper value received (without passing function)" );
 469                 done.pop().call();
 470         });
 471 });
 472
 473 asyncTest( "jQuery.Deferred.then - spec compatibility", function() {
 474
 475         expect( 1 );
 476
 477         var defer = jQuery.Deferred().done(function() {
 478                 setTimeout( start );
 479                 throw new Error();
 480         });
 481
 482         defer.then(function() {
 483                 ok( true, "errors in .done callbacks don't stop .then handlers" );
 484         });
 485
 486         try {
 487                 defer.resolve();
 488         } catch ( _ ) {}
 489 });
 490
 491 test( "jQuery.Deferred - 1.x/2.x compatibility", function( assert ) {
 492
 493         expect( 8 );
 494
 495         var context = { id: "callback context" },
 496                 thenable = jQuery.Deferred().resolve( "thenable fulfillment" ).promise(),
 497                 done = jQuery.map( new Array( 8 ), function() { return assert.async(); } );
 498
 499         thenable.unwrapped = false;
 500
 501         jQuery.Deferred().resolve( 1, 2 ).then(function() {
 502                 assert.deepEqual( [].slice.call( arguments ), [ 1, 2 ],
 503                         ".then fulfillment callbacks receive all resolution values" );
 504                 done.pop().call();
 505         });
 506         jQuery.Deferred().reject( 1, 2 ).then( null, function() {
 507                 assert.deepEqual( [].slice.call( arguments ), [ 1, 2 ],
 508                         ".then rejection callbacks receive all rejection values" );
 509                 done.pop().call();
 510         });
 511         jQuery.Deferred().notify( 1, 2 ).then( null, null, function() {
 512                 assert.deepEqual( [].slice.call( arguments ), [ 1, 2 ],
 513                         ".then progress callbacks receive all progress values" );
 514                 done.pop().call();
 515         });
 516
 517         jQuery.Deferred().resolveWith( context ).then(function() {
 518                 assert.deepEqual( this, context, ".then fulfillment callbacks receive context" );
 519                 done.pop().call();
 520         });
 521         jQuery.Deferred().rejectWith( context ).then( null, function() {
 522                 assert.deepEqual( this, context, ".then rejection callbacks receive context" );
 523                 done.pop().call();
 524         });
 525         jQuery.Deferred().notifyWith( context ).then( null, null, function() {
 526                 assert.deepEqual( this, context, ".then progress callbacks receive context" );
 527                 done.pop().call();
 528         });
 529
 530         jQuery.Deferred().resolve( thenable ).done(function( value ) {
 531                 assert.strictEqual( value, thenable, ".done doesn't unwrap thenables" );
 532                 done.pop().call();
 533         });
 534
 535         jQuery.Deferred().notify( thenable ).then().then( null, null, function( value ) {
 536                 assert.strictEqual( value, "thenable fulfillment",
 537                         ".then implicit progress callbacks unwrap thenables" );
 538                 done.pop().call();
 539         });
 540 });
 541
 542 test( "jQuery.Deferred.then - progress and thenables", function( assert ) {
 543
 544         expect( 2 );
 545
 546         var trigger = jQuery.Deferred().notify(),
 547                 expectedProgress = [ "baz", "baz" ],
 548                 done = jQuery.map( new Array( 2 ), function() { return assert.async(); } ),
 549                 failer = function( evt ) {
 550                         return function() {
 551                                 ok( false, "no unexpected " + evt );
 552                         };
 553                 };
 554
 555         trigger.then( null, null, function() {
 556                 var notifier = jQuery.Deferred().notify( "foo" );
 557                 setTimeout(function() {
 558                         notifier.notify( "bar" ).resolve( "baz" );
 559                 });
 560                 return notifier;
 561         }).then( failer( "fulfill" ), failer( "reject" ), function( v ) {
 562                 assert.strictEqual( v, expectedProgress.shift(), "expected progress value" );
 563                 done.pop().call();
 564         });
 565         trigger.notify();
 566 });
 567
 568 test( "jQuery.Deferred - notify and resolve", function( assert ) {
 569
 570         expect( 7 );
 571
 572         var notifiedResolved = jQuery.Deferred().notify( "foo" )/*xxx .resolve( "bar" )*/,
 573                 done = jQuery.map( new Array( 3 ), function() { return assert.async(); } );
 574
 575         notifiedResolved.progress( function( v ) {
 576                 assert.strictEqual( v, "foo", "progress value" );
 577         } );
 578
 579         notifiedResolved.pipe().progress( function( v ) {
 580                 assert.strictEqual( v, "foo", "piped progress value" );
 581         } );
 582
 583         notifiedResolved.pipe( null, null, function() {
 584                 return "baz";
 585         } ).progress( function( v ) {
 586                 assert.strictEqual( v, "baz", "replaced piped progress value" );
 587         } );
 588
 589         notifiedResolved.pipe( null, null, function() {
 590                 return jQuery.Deferred().notify( "baz" ).resolve( "quux" );
 591         } ).progress( function( v ) {
 592                 assert.strictEqual( v, "baz", "deferred replaced piped progress value" );
 593         } );
 594
 595         notifiedResolved.then().progress( function( v ) {
 596                 assert.strictEqual( v, "foo", "then'd progress value" );
 597                 done.pop().call();
 598         } );
 599
 600         notifiedResolved.then( null, null, function() {
 601                 return "baz";
 602         } ).progress( function( v ) {
 603                 assert.strictEqual( v, "baz", "replaced then'd progress value" );
 604                 done.pop().call();
 605         } );
 606
 607         notifiedResolved.then( null, null, function() {
 608                 return jQuery.Deferred().notify( "baz" ).resolve( "quux" );
 609         } ).progress( function( v ) {
 610                 // Progress from the surrogate deferred is ignored
 611                 assert.strictEqual( v, "quux", "deferred replaced then'd progress value" );
 612                 done.pop().call();
 613         } );
 614 });
 615
 616 test( "jQuery.when", function() {
 617
 618         expect( 37 );
 619
 620         // Some other objects
 621         jQuery.each({
 622                 "an empty string": "",
 623                 "a non-empty string": "some string",
 624                 "zero": 0,
 625                 "a number other than zero": 1,
 626                 "true": true,
 627                 "false": false,
 628                 "null": null,
 629                 "undefined": undefined,
 630                 "a plain object": {},
 631                 "an array": [ 1, 2, 3 ]
 632
 633         }, function( message, value ) {
 634                 ok(
 635                         jQuery.isFunction(
 636                                 jQuery.when( value ).done(function( resolveValue ) {
 637                                         strictEqual( this, window, "Context is the global object with " + message );
 638                                         strictEqual( resolveValue, value, "Test the promise was resolved with " + message );
 639                                 }).promise
 640                         ),
 641                         "Test " + message + " triggers the creation of a new Promise"
 642                 );
 643         });
 644
 645         ok(
 646                 jQuery.isFunction(
 647                         jQuery.when().done(function( resolveValue ) {
 648                                 strictEqual( this, window, "Test the promise was resolved with window as its context" );
 649                                 strictEqual( resolveValue, undefined, "Test the promise was resolved with no parameter" );
 650                         }).promise
 651                 ),
 652                 "Test calling when with no parameter triggers the creation of a new Promise"
 653         );
 654
 655         var cache,
 656                 context = {};
 657
 658         jQuery.when( jQuery.Deferred().resolveWith( context ) ).done(function() {
 659                 strictEqual( this, context, "when( promise ) propagates context" );
 660         });
 661
 662         jQuery.each([ 1, 2, 3 ], function( k, i ) {
 663
 664                 jQuery.when( cache || jQuery.Deferred(function() {
 665                                 this.resolve( i );
 666                         })
 667                 ).done(function( value ) {
 668
 669                         strictEqual( value, 1, "Function executed" + ( i > 1 ? " only once" : "" ) );
 670                         cache = value;
 671                 });
 672
 673         });
 674 });
 675
 676 test( "jQuery.when - joined", function() {
 677
 678         expect( 195 );
 679
 680         var deferreds = {
 681                         rawValue: 1,
 682                         fulfilled: jQuery.Deferred().resolve( 1 ),
 683                         rejected: jQuery.Deferred().reject( 0 ),
 684                         notified: jQuery.Deferred().notify( true ),
 685                         eventuallyFulfilled: jQuery.Deferred().notify( true ),
 686                         eventuallyRejected: jQuery.Deferred().notify( true ),
 687                         fulfilledStandardPromise: Promise.resolve( 1 ),
 688                         rejectedStandardPromise: Promise.reject( 0 )
 689                 },
 690                 willSucceed = {
 691                         rawValue: true,
 692                         fulfilled: true,
 693                         eventuallyFulfilled: true,
 694                         fulfilledStandardPromise: true
 695                 },
 696                 willError = {
 697                         rejected: true,
 698                         eventuallyRejected: true,
 699                         rejectedStandardPromise: true
 700                 },
 701                 willNotify = {
 702                         notified: true,
 703                         eventuallyFulfilled: true,
 704                         eventuallyRejected: true
 705                 },
 706                 counter = 49;
 707
 708         stop();
 709
 710         function restart() {
 711                 if ( !--counter ) {
 712                         start();
 713                 }
 714         }
 715
 716         jQuery.each( deferreds, function( id1, defer1 ) {
 717                 jQuery.each( deferreds, function( id2, defer2 ) {
 718                         var shouldResolve = willSucceed[ id1 ] && willSucceed[ id2 ],
 719                                 shouldError = willError[ id1 ] || willError[ id2 ],
 720                                 shouldNotify = willNotify[ id1 ] || willNotify[ id2 ],
 721                                 expected = shouldResolve ? [ 1, 1 ] : [ 0, undefined ],
 722                                 expectedNotify = shouldNotify && [ willNotify[ id1 ], willNotify[ id2 ] ],
 723                                 code = "jQuery.when( " + id1 + ", " + id2 + " )",
 724                                 context1 = defer1 && jQuery.isFunction( defer1.promise ) ? defer1.promise() :
 725                                         ( defer1.then ? window : undefined ),
 726                                 context2 = defer2 && jQuery.isFunction( defer2.promise ) ? defer2.promise() :
 727                                         ( defer2.then ? window : undefined );
 728
 729                         jQuery.when( defer1, defer2 ).done(function( a, b ) {
 730                                 if ( shouldResolve ) {
 731                                         deepEqual( [ a, b ], expected, code + " => resolve" );
 732                                         strictEqual( this[ 0 ], context1, code + " => first context OK" );
 733                                         strictEqual( this[ 1 ], context2, code + " => second context OK" );
 734                                 } else {
 735                                         ok( false,  code + " => resolve" );
 736                                 }
 737                         }).fail(function( a, b ) {
 738                                 if ( shouldError ) {
 739                                         deepEqual( [ a, b ], expected, code + " => reject" );
 740                                 } else {
 741                                         ok( false, code + " => reject" );
 742                                 }
 743                         }).progress(function( a, b ) {
 744                                 deepEqual( [ a, b ], expectedNotify, code + " => progress" );
 745                                 strictEqual( this[ 0 ], expectedNotify[ 0 ] ? context1 : undefined, code + " => first context OK" );
 746                                 strictEqual( this[ 1 ], expectedNotify[ 1 ] ? context2 : undefined, code + " => second context OK" );
 747                         }).always( restart );
 748                 });
 749         });
 750         deferreds.eventuallyFulfilled.resolve( 1 );
 751         deferreds.eventuallyRejected.reject( 0 );
 752 });
 753
 754 test( "jQuery.when - resolved", function() {
 755
 756         expect( 6 );
 757
 758         var a = jQuery.Deferred().notify( 1 ).resolve( 4 ),
 759                 b = jQuery.Deferred().notify( 2 ).resolve( 5 ),
 760                 c = jQuery.Deferred().notify( 3 ).resolve( 6 );
 761
 762         jQuery.when( a, b, c ).progress(function( a, b, c ) {
 763                 strictEqual( a, 1, "first notify value ok" );
 764                 strictEqual( b, 2, "second notify value ok" );
 765                 strictEqual( c, 3, "third notify value ok" );
 766         }).done(function( a, b, c ) {
 767                 strictEqual( a, 4, "first resolve value ok" );
 768                 strictEqual( b, 5, "second resolve value ok" );
 769                 strictEqual( c, 6, "third resolve value ok" );
 770         }).fail(function() {
 771                 ok( false, "Error on resolve" );
 772         });
 773 });
 774
 775 test( "jQuery.when - filtering", function() {
 776
 777         expect( 2 );
 778
 779         function increment( x ) {
 780                 return x + 1;
 781         }
 782
 783         stop();
 784
 785         jQuery.when(
 786                 jQuery.Deferred().resolve( 3 ).then( increment ),
 787                 jQuery.Deferred().reject( 5 ).then( null, increment )
 788         ).done(function( four, six ) {
 789                 strictEqual( four, 4, "resolved value incremented" );
 790                 strictEqual( six, 6, "rejected value incremented" );
 791                 start();
 792         });
 793 });
 794
 795 test( "jQuery.when - exceptions", function() {
 796
 797         expect( 2 );
 798
 799         function woops() {
 800                 throw "exception thrown";
 801         }
 802
 803         stop();
 804
 805         jQuery.Deferred().resolve().then( woops ).fail(function( doneException ) {
 806                 strictEqual( doneException, "exception thrown", "throwing in done handler" );
 807                 jQuery.Deferred().reject().then( null, woops ).fail(function( failException ) {
 808                         strictEqual( failException, "exception thrown", "throwing in fail handler" );
 809                         start();
 810                 });
 811         });
 812 });
 813
 814 test( "jQuery.when - chaining", function() {
 815
 816         expect( 4 );
 817
 818         var defer = jQuery.Deferred();
 819
 820         function chain() {
 821                 return defer;
 822         }
 823
 824         function chainStandard() {
 825                 return Promise.resolve( "std deferred" );
 826         }
 827
 828         stop();
 829
 830         jQuery.when(
 831                 jQuery.Deferred().resolve( 3 ).then( chain ),
 832                 jQuery.Deferred().reject( 5 ).then( null, chain ),
 833                 jQuery.Deferred().resolve( 3 ).then( chainStandard ),
 834                 jQuery.Deferred().reject( 5 ).then( null, chainStandard )
 835         ).done(function( v1, v2, s1, s2 ) {
 836                 strictEqual( v1, "other deferred", "chaining in done handler" );
 837                 strictEqual( v2, "other deferred", "chaining in fail handler" );
 838                 strictEqual( s1, "std deferred", "chaining thenable in done handler" );
 839                 strictEqual( s2, "std deferred", "chaining thenable in fail handler" );
 840                 start();
 841         });
 842
 843         defer.resolve( "other deferred" );
 844 });