Completed
Push — master ( e2c47b...19fc28 )
by Felipe
52s
created

test/collection.js   B

Complexity

Conditions 1
Paths 4096

Size

Total Lines 1998

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 1
c 1
b 0
f 0
nc 4096
nop 0
dl 0
loc 1998
rs 8.2857

How to fix   Long Method   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
(function() {
2
3
  var a, b, c, d, e, col, otherCol;
4
5
  QUnit.module('Backbone.Collection', {
6
7
    beforeEach: function(assert) {
8
      a         = new Backbone.Model({id: 3, label: 'a'});
9
      b         = new Backbone.Model({id: 2, label: 'b'});
10
      c         = new Backbone.Model({id: 1, label: 'c'});
11
      d         = new Backbone.Model({id: 0, label: 'd'});
12
      e         = null;
13
      col       = new Backbone.Collection([a, b, c, d]);
14
      otherCol  = new Backbone.Collection();
15
    }
16
17
  });
18
19
  QUnit.test('new and sort', function(assert) {
20
    assert.expect(6);
21
    var counter = 0;
22
    col.on('sort', function(){ counter++; });
23
    assert.deepEqual(col.pluck('label'), ['a', 'b', 'c', 'd']);
24
    col.comparator = function(m1, m2) {
25
      return m1.id > m2.id ? -1 : 1;
26
    };
27
    col.sort();
28
    assert.equal(counter, 1);
29
    assert.deepEqual(col.pluck('label'), ['a', 'b', 'c', 'd']);
30
    col.comparator = function(model) { return model.id; };
31
    col.sort();
32
    assert.equal(counter, 2);
33
    assert.deepEqual(col.pluck('label'), ['d', 'c', 'b', 'a']);
34
    assert.equal(col.length, 4);
35
  });
36
37
  QUnit.test('String comparator.', function(assert) {
38
    assert.expect(1);
39
    var collection = new Backbone.Collection([
40
      {id: 3},
41
      {id: 1},
42
      {id: 2}
43
    ], {comparator: 'id'});
44
    assert.deepEqual(collection.pluck('id'), [1, 2, 3]);
45
  });
46
47
  QUnit.test('new and parse', function(assert) {
48
    assert.expect(3);
49
    var Collection = Backbone.Collection.extend({
50
      parse: function(data) {
51
        return _.filter(data, function(datum) {
52
          return datum.a % 2 === 0;
53
        });
54
      }
55
    });
56
    var models = [{a: 1}, {a: 2}, {a: 3}, {a: 4}];
57
    var collection = new Collection(models, {parse: true});
58
    assert.strictEqual(collection.length, 2);
59
    assert.strictEqual(collection.first().get('a'), 2);
60
    assert.strictEqual(collection.last().get('a'), 4);
61
  });
62
63
  QUnit.test('clone preserves model and comparator', function(assert) {
64
    assert.expect(3);
65
    var Model = Backbone.Model.extend();
66
    var comparator = function(model){ return model.id; };
67
68
    var collection = new Backbone.Collection([{id: 1}], {
69
      model: Model,
70
      comparator: comparator
71
    }).clone();
72
    collection.add({id: 2});
73
    assert.ok(collection.at(0) instanceof Model);
74
    assert.ok(collection.at(1) instanceof Model);
75
    assert.strictEqual(collection.comparator, comparator);
76
  });
77
78
  QUnit.test('get', function(assert) {
79
    assert.expect(6);
80
    assert.equal(col.get(0), d);
81
    assert.equal(col.get(d.clone()), d);
82
    assert.equal(col.get(2), b);
83
    assert.equal(col.get({id: 1}), c);
84
    assert.equal(col.get(c.clone()), c);
85
    assert.equal(col.get(col.first().cid), col.first());
86
  });
87
88
  QUnit.test('get with non-default ids', function(assert) {
89
    assert.expect(5);
90
    var MongoModel = Backbone.Model.extend({idAttribute: '_id'});
91
    var model = new MongoModel({_id: 100});
92
    var collection = new Backbone.Collection([model], {model: MongoModel});
93
    assert.equal(collection.get(100), model);
94
    assert.equal(collection.get(model.cid), model);
95
    assert.equal(collection.get(model), model);
96
    assert.equal(collection.get(101), void 0);
97
98
    var collection2 = new Backbone.Collection();
99
    collection2.model = MongoModel;
100
    collection2.add(model.attributes);
101
    assert.equal(collection2.get(model.clone()), collection2.first());
102
  });
103
104
  QUnit.test('has', function(assert) {
105
    assert.expect(15);
106
    assert.ok(col.has(a));
107
    assert.ok(col.has(b));
108
    assert.ok(col.has(c));
109
    assert.ok(col.has(d));
110
    assert.ok(col.has(a.id));
111
    assert.ok(col.has(b.id));
112
    assert.ok(col.has(c.id));
113
    assert.ok(col.has(d.id));
114
    assert.ok(col.has(a.cid));
115
    assert.ok(col.has(b.cid));
116
    assert.ok(col.has(c.cid));
117
    assert.ok(col.has(d.cid));
118
    var outsider = new Backbone.Model({id: 4});
119
    assert.notOk(col.has(outsider));
120
    assert.notOk(col.has(outsider.id));
121
    assert.notOk(col.has(outsider.cid));
122
  });
123
124
  QUnit.test('update index when id changes', function(assert) {
125
    assert.expect(4);
126
    var collection = new Backbone.Collection();
127
    collection.add([
128
      {id: 0, name: 'one'},
129
      {id: 1, name: 'two'}
130
    ]);
131
    var one = collection.get(0);
132
    assert.equal(one.get('name'), 'one');
133
    collection.on('change:name', function(model) { assert.ok(this.get(model)); });
134
    one.set({name: 'dalmatians', id: 101});
135
    assert.equal(collection.get(0), null);
136
    assert.equal(collection.get(101).get('name'), 'dalmatians');
137
  });
138
139
  QUnit.test('at', function(assert) {
140
    assert.expect(2);
141
    assert.equal(col.at(2), c);
142
    assert.equal(col.at(-2), c);
143
  });
144
145
  QUnit.test('pluck', function(assert) {
146
    assert.expect(1);
147
    assert.equal(col.pluck('label').join(' '), 'a b c d');
148
  });
149
150
  QUnit.test('add', function(assert) {
151
    assert.expect(14);
152
    var added, opts, secondAdded;
153
    added = opts = secondAdded = null;
154
    e = new Backbone.Model({id: 10, label: 'e'});
155
    otherCol.add(e);
156
    otherCol.on('add', function() {
157
      secondAdded = true;
158
    });
159
    col.on('add', function(model, collection, options){
160
      added = model.get('label');
161
      opts = options;
162
    });
163
    col.add(e, {amazing: true});
164
    assert.equal(added, 'e');
165
    assert.equal(col.length, 5);
166
    assert.equal(col.last(), e);
167
    assert.equal(otherCol.length, 1);
168
    assert.equal(secondAdded, null);
169
    assert.ok(opts.amazing);
170
171
    var f = new Backbone.Model({id: 20, label: 'f'});
172
    var g = new Backbone.Model({id: 21, label: 'g'});
173
    var h = new Backbone.Model({id: 22, label: 'h'});
174
    var atCol = new Backbone.Collection([f, g, h]);
175
    assert.equal(atCol.length, 3);
176
    atCol.add(e, {at: 1});
177
    assert.equal(atCol.length, 4);
178
    assert.equal(atCol.at(1), e);
179
    assert.equal(atCol.last(), h);
180
181
    var coll = new Backbone.Collection(new Array(2));
182
    var addCount = 0;
183
    coll.on('add', function(){
184
      addCount += 1;
185
    });
186
    coll.add([undefined, f, g]);
187
    assert.equal(coll.length, 5);
188
    assert.equal(addCount, 3);
189
    coll.add(new Array(4));
190
    assert.equal(coll.length, 9);
191
    assert.equal(addCount, 7);
192
  });
193
194
  QUnit.test('add multiple models', function(assert) {
195
    assert.expect(6);
196
    var collection = new Backbone.Collection([{at: 0}, {at: 1}, {at: 9}]);
197
    collection.add([{at: 2}, {at: 3}, {at: 4}, {at: 5}, {at: 6}, {at: 7}, {at: 8}], {at: 2});
198
    for (var i = 0; i <= 5; i++) {
199
      assert.equal(collection.at(i).get('at'), i);
200
    }
201
  });
202
203
  QUnit.test('add; at should have preference over comparator', function(assert) {
204
    assert.expect(1);
205
    var Col = Backbone.Collection.extend({
206
      comparator: function(m1, m2) {
207
        return m1.id > m2.id ? -1 : 1;
208
      }
209
    });
210
211
    var collection = new Col([{id: 2}, {id: 3}]);
212
    collection.add(new Backbone.Model({id: 1}), {at: 1});
213
214
    assert.equal(collection.pluck('id').join(' '), '3 1 2');
215
  });
216
217
  QUnit.test('add; at should add to the end if the index is out of bounds', function(assert) {
218
    assert.expect(1);
219
    var collection = new Backbone.Collection([{id: 2}, {id: 3}]);
220
    collection.add(new Backbone.Model({id: 1}), {at: 5});
221
222
    assert.equal(collection.pluck('id').join(' '), '2 3 1');
223
  });
224
225
  QUnit.test("can't add model to collection twice", function(assert) {
226
    var collection = new Backbone.Collection([{id: 1}, {id: 2}, {id: 1}, {id: 2}, {id: 3}]);
227
    assert.equal(collection.pluck('id').join(' '), '1 2 3');
228
  });
229
230
  QUnit.test("can't add different model with same id to collection twice", function(assert) {
231
    assert.expect(1);
232
    var collection = new Backbone.Collection;
233
    collection.unshift({id: 101});
234
    collection.add({id: 101});
235
    assert.equal(collection.length, 1);
236
  });
237
238
  QUnit.test('merge in duplicate models with {merge: true}', function(assert) {
239
    assert.expect(3);
240
    var collection = new Backbone.Collection;
241
    collection.add([{id: 1, name: 'Moe'}, {id: 2, name: 'Curly'}, {id: 3, name: 'Larry'}]);
242
    collection.add({id: 1, name: 'Moses'});
243
    assert.equal(collection.first().get('name'), 'Moe');
244
    collection.add({id: 1, name: 'Moses'}, {merge: true});
245
    assert.equal(collection.first().get('name'), 'Moses');
246
    collection.add({id: 1, name: 'Tim'}, {merge: true, silent: true});
247
    assert.equal(collection.first().get('name'), 'Tim');
248
  });
249
250
  QUnit.test('add model to multiple collections', function(assert) {
251
    assert.expect(10);
252
    var counter = 0;
253
    var m = new Backbone.Model({id: 10, label: 'm'});
254
    m.on('add', function(model, collection) {
255
      counter++;
256
      assert.equal(m, model);
257
      if (counter > 1) {
258
        assert.equal(collection, col2);
259
      } else {
260
        assert.equal(collection, col1);
261
      }
262
    });
263
    var col1 = new Backbone.Collection([]);
264
    col1.on('add', function(model, collection) {
265
      assert.equal(m, model);
266
      assert.equal(col1, collection);
267
    });
268
    var col2 = new Backbone.Collection([]);
269
    col2.on('add', function(model, collection) {
270
      assert.equal(m, model);
271
      assert.equal(col2, collection);
272
    });
273
    col1.add(m);
274
    assert.equal(m.collection, col1);
275
    col2.add(m);
276
    assert.equal(m.collection, col1);
277
  });
278
279
  QUnit.test('add model with parse', function(assert) {
280
    assert.expect(1);
281
    var Model = Backbone.Model.extend({
282
      parse: function(obj) {
283
        obj.value += 1;
284
        return obj;
285
      }
286
    });
287
288
    var Col = Backbone.Collection.extend({model: Model});
289
    var collection = new Col;
290
    collection.add({value: 1}, {parse: true});
291
    assert.equal(collection.at(0).get('value'), 2);
292
  });
293
294
  QUnit.test('add with parse and merge', function(assert) {
295
    var collection = new Backbone.Collection();
296
    collection.parse = function(attrs) {
297
      return _.map(attrs, function(model) {
298
        if (model.model) return model.model;
299
        return model;
300
      });
301
    };
302
    collection.add({id: 1});
303
    collection.add({model: {id: 1, name: 'Alf'}}, {parse: true, merge: true});
304
    assert.equal(collection.first().get('name'), 'Alf');
305
  });
306
307
  QUnit.test('add model to collection with sort()-style comparator', function(assert) {
308
    assert.expect(3);
309
    var collection = new Backbone.Collection;
310
    collection.comparator = function(m1, m2) {
311
      return m1.get('name') < m2.get('name') ? -1 : 1;
312
    };
313
    var tom = new Backbone.Model({name: 'Tom'});
314
    var rob = new Backbone.Model({name: 'Rob'});
315
    var tim = new Backbone.Model({name: 'Tim'});
316
    collection.add(tom);
317
    collection.add(rob);
318
    collection.add(tim);
319
    assert.equal(collection.indexOf(rob), 0);
320
    assert.equal(collection.indexOf(tim), 1);
321
    assert.equal(collection.indexOf(tom), 2);
322
  });
323
324
  QUnit.test('comparator that depends on `this`', function(assert) {
325
    assert.expect(2);
326
    var collection = new Backbone.Collection;
327
    collection.negative = function(num) {
328
      return -num;
329
    };
330
    collection.comparator = function(model) {
331
      return this.negative(model.id);
332
    };
333
    collection.add([{id: 1}, {id: 2}, {id: 3}]);
334
    assert.deepEqual(collection.pluck('id'), [3, 2, 1]);
335
    collection.comparator = function(m1, m2) {
336
      return this.negative(m2.id) - this.negative(m1.id);
337
    };
338
    collection.sort();
339
    assert.deepEqual(collection.pluck('id'), [1, 2, 3]);
340
  });
341
342
  QUnit.test('remove', function(assert) {
343
    assert.expect(12);
344
    var removed = null;
345
    var result = null;
346
    col.on('remove', function(model, collection, options) {
347
      removed = model.get('label');
348
      assert.equal(options.index, 3);
349
      assert.equal(collection.get(model), undefined, '#3693: model cannot be fetched from collection');
350
    });
351
    result = col.remove(d);
352
    assert.equal(removed, 'd');
353
    assert.strictEqual(result, d);
354
    //if we try to remove d again, it's not going to actually get removed
355
    result = col.remove(d);
356
    assert.strictEqual(result, undefined);
357
    assert.equal(col.length, 3);
358
    assert.equal(col.first(), a);
359
    col.off();
360
    result = col.remove([c, d]);
361
    assert.equal(result.length, 1, 'only returns removed models');
362
    assert.equal(result[0], c, 'only returns removed models');
363
    result = col.remove([c, b]);
364
    assert.equal(result.length, 1, 'only returns removed models');
365
    assert.equal(result[0], b, 'only returns removed models');
366
    result = col.remove([]);
367
    assert.deepEqual(result, [], 'returns empty array when nothing removed');
368
  });
369
370
  QUnit.test('add and remove return values', function(assert) {
371
    assert.expect(13);
372
    var Even = Backbone.Model.extend({
373
      validate: function(attrs) {
374
        if (attrs.id % 2 !== 0) return 'odd';
375
      }
376
    });
377
    var collection = new Backbone.Collection;
378
    collection.model = Even;
379
380
    var list = collection.add([{id: 2}, {id: 4}], {validate: true});
381
    assert.equal(list.length, 2);
382
    assert.ok(list[0] instanceof Backbone.Model);
383
    assert.equal(list[1], collection.last());
384
    assert.equal(list[1].get('id'), 4);
385
386
    list = collection.add([{id: 3}, {id: 6}], {validate: true});
387
    assert.equal(collection.length, 3);
388
    assert.equal(list[0], false);
389
    assert.equal(list[1].get('id'), 6);
390
391
    var result = collection.add({id: 6});
392
    assert.equal(result.cid, list[1].cid);
393
394
    result = collection.remove({id: 6});
395
    assert.equal(collection.length, 2);
396
    assert.equal(result.id, 6);
397
398
    list = collection.remove([{id: 2}, {id: 8}]);
399
    assert.equal(collection.length, 1);
400
    assert.equal(list[0].get('id'), 2);
401
    assert.equal(list[1], null);
402
  });
403
404
  QUnit.test('shift and pop', function(assert) {
405
    assert.expect(2);
406
    var collection = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
407
    assert.equal(collection.shift().get('a'), 'a');
408
    assert.equal(collection.pop().get('c'), 'c');
409
  });
410
411
  QUnit.test('slice', function(assert) {
412
    assert.expect(2);
413
    var collection = new Backbone.Collection([{a: 'a'}, {b: 'b'}, {c: 'c'}]);
414
    var array = collection.slice(1, 3);
415
    assert.equal(array.length, 2);
416
    assert.equal(array[0].get('b'), 'b');
417
  });
418
419
  QUnit.test('events are unbound on remove', function(assert) {
420
    assert.expect(3);
421
    var counter = 0;
422
    var dj = new Backbone.Model();
423
    var emcees = new Backbone.Collection([dj]);
424
    emcees.on('change', function(){ counter++; });
425
    dj.set({name: 'Kool'});
426
    assert.equal(counter, 1);
427
    emcees.reset([]);
428
    assert.equal(dj.collection, undefined);
429
    dj.set({name: 'Shadow'});
430
    assert.equal(counter, 1);
431
  });
432
433
  QUnit.test('remove in multiple collections', function(assert) {
434
    assert.expect(7);
435
    var modelData = {
436
      id: 5,
437
      title: 'Othello'
438
    };
439
    var passed = false;
440
    var m1 = new Backbone.Model(modelData);
441
    var m2 = new Backbone.Model(modelData);
442
    m2.on('remove', function() {
443
      passed = true;
444
    });
445
    var col1 = new Backbone.Collection([m1]);
446
    var col2 = new Backbone.Collection([m2]);
447
    assert.notEqual(m1, m2);
448
    assert.ok(col1.length === 1);
449
    assert.ok(col2.length === 1);
450
    col1.remove(m1);
451
    assert.equal(passed, false);
452
    assert.ok(col1.length === 0);
453
    col2.remove(m1);
454
    assert.ok(col2.length === 0);
455
    assert.equal(passed, true);
456
  });
457
458
  QUnit.test('remove same model in multiple collection', function(assert) {
459
    assert.expect(16);
460
    var counter = 0;
461
    var m = new Backbone.Model({id: 5, title: 'Othello'});
462
    m.on('remove', function(model, collection) {
463
      counter++;
464
      assert.equal(m, model);
465
      if (counter > 1) {
466
        assert.equal(collection, col1);
467
      } else {
468
        assert.equal(collection, col2);
469
      }
470
    });
471
    var col1 = new Backbone.Collection([m]);
472
    col1.on('remove', function(model, collection) {
473
      assert.equal(m, model);
474
      assert.equal(col1, collection);
475
    });
476
    var col2 = new Backbone.Collection([m]);
477
    col2.on('remove', function(model, collection) {
478
      assert.equal(m, model);
479
      assert.equal(col2, collection);
480
    });
481
    assert.equal(col1, m.collection);
482
    col2.remove(m);
483
    assert.ok(col2.length === 0);
484
    assert.ok(col1.length === 1);
485
    assert.equal(counter, 1);
486
    assert.equal(col1, m.collection);
487
    col1.remove(m);
488
    assert.equal(null, m.collection);
489
    assert.ok(col1.length === 0);
490
    assert.equal(counter, 2);
491
  });
492
493
  QUnit.test('model destroy removes from all collections', function(assert) {
494
    assert.expect(3);
495
    var m = new Backbone.Model({id: 5, title: 'Othello'});
496
    m.sync = function(method, model, options) { options.success(); };
497
    var col1 = new Backbone.Collection([m]);
498
    var col2 = new Backbone.Collection([m]);
499
    m.destroy();
500
    assert.ok(col1.length === 0);
501
    assert.ok(col2.length === 0);
502
    assert.equal(undefined, m.collection);
503
  });
504
505
  QUnit.test('Collection: non-persisted model destroy removes from all collections', function(assert) {
506
    assert.expect(3);
507
    var m = new Backbone.Model({title: 'Othello'});
508
    m.sync = function(method, model, options) { throw 'should not be called'; };
509
    var col1 = new Backbone.Collection([m]);
510
    var col2 = new Backbone.Collection([m]);
511
    m.destroy();
512
    assert.ok(col1.length === 0);
513
    assert.ok(col2.length === 0);
514
    assert.equal(undefined, m.collection);
515
  });
516
517
  QUnit.test('fetch', function(assert) {
518
    assert.expect(4);
519
    var collection = new Backbone.Collection;
520
    collection.url = '/test';
521
    collection.fetch();
522
    assert.equal(this.syncArgs.method, 'read');
523
    assert.equal(this.syncArgs.model, collection);
524
    assert.equal(this.syncArgs.options.parse, true);
525
526
    collection.fetch({parse: false});
527
    assert.equal(this.syncArgs.options.parse, false);
528
  });
529
530
  QUnit.test('fetch with an error response triggers an error event', function(assert) {
531
    assert.expect(1);
532
    var collection = new Backbone.Collection();
533
    collection.on('error', function() {
534
      assert.ok(true);
535
    });
536
    collection.sync = function(method, model, options) { options.error(); };
537
    collection.fetch();
538
  });
539
540
  QUnit.test('#3283 - fetch with an error response calls error with context', function(assert) {
541
    assert.expect(1);
542
    var collection = new Backbone.Collection();
543
    var obj = {};
544
    var options = {
545
      context: obj,
546
      error: function() {
547
        assert.equal(this, obj);
548
      }
549
    };
550
    collection.sync = function(method, model, opts) {
551
      opts.error.call(opts.context);
552
    };
553
    collection.fetch(options);
554
  });
555
556
  QUnit.test('ensure fetch only parses once', function(assert) {
557
    assert.expect(1);
558
    var collection = new Backbone.Collection;
559
    var counter = 0;
560
    collection.parse = function(models) {
561
      counter++;
562
      return models;
563
    };
564
    collection.url = '/test';
565
    collection.fetch();
566
    this.syncArgs.options.success([]);
567
    assert.equal(counter, 1);
568
  });
569
570
  QUnit.test('create', function(assert) {
571
    assert.expect(4);
572
    var collection = new Backbone.Collection;
573
    collection.url = '/test';
574
    var model = collection.create({label: 'f'}, {wait: true});
575
    assert.equal(this.syncArgs.method, 'create');
576
    assert.equal(this.syncArgs.model, model);
577
    assert.equal(model.get('label'), 'f');
578
    assert.equal(model.collection, collection);
579
  });
580
581
  QUnit.test('create with validate:true enforces validation', function(assert) {
582
    assert.expect(3);
583
    var ValidatingModel = Backbone.Model.extend({
584
      validate: function(attrs) {
585
        return 'fail';
586
      }
587
    });
588
    var ValidatingCollection = Backbone.Collection.extend({
589
      model: ValidatingModel
590
    });
591
    var collection = new ValidatingCollection();
592
    collection.on('invalid', function(coll, error, options) {
593
      assert.equal(error, 'fail');
594
      assert.equal(options.validationError, 'fail');
595
    });
596
    assert.equal(collection.create({'foo': 'bar'}, {validate: true}), false);
597
  });
598
599
  QUnit.test('create will pass extra options to success callback', function(assert) {
600
    assert.expect(1);
601
    var Model = Backbone.Model.extend({
602
      sync: function(method, model, options) {
603
        _.extend(options, {specialSync: true});
604
        return Backbone.Model.prototype.sync.call(this, method, model, options);
605
      }
606
    });
607
608
    var Collection = Backbone.Collection.extend({
609
      model: Model,
610
      url: '/test'
611
    });
612
613
    var collection = new Collection;
614
615
    var success = function(model, response, options) {
616
      assert.ok(options.specialSync, 'Options were passed correctly to callback');
617
    };
618
619
    collection.create({}, {success: success});
620
    this.ajaxSettings.success();
621
  });
622
623
  QUnit.test('create with wait:true should not call collection.parse', function(assert) {
624
    assert.expect(0);
625
    var Collection = Backbone.Collection.extend({
626
      url: '/test',
627
      parse: function() {
628
        assert.ok(false);
629
      }
630
    });
631
632
    var collection = new Collection;
633
634
    collection.create({}, {wait: true});
635
    this.ajaxSettings.success();
636
  });
637
638
  QUnit.test('a failing create returns model with errors', function(assert) {
639
    var ValidatingModel = Backbone.Model.extend({
640
      validate: function(attrs) {
641
        return 'fail';
642
      }
643
    });
644
    var ValidatingCollection = Backbone.Collection.extend({
645
      model: ValidatingModel
646
    });
647
    var collection = new ValidatingCollection();
648
    var m = collection.create({foo: 'bar'});
649
    assert.equal(m.validationError, 'fail');
650
    assert.equal(collection.length, 1);
651
  });
652
653
  QUnit.test('initialize', function(assert) {
654
    assert.expect(1);
655
    var Collection = Backbone.Collection.extend({
656
      initialize: function() {
657
        this.one = 1;
658
      }
659
    });
660
    var coll = new Collection;
661
    assert.equal(coll.one, 1);
662
  });
663
664
  QUnit.test('toJSON', function(assert) {
665
    assert.expect(1);
666
    assert.equal(JSON.stringify(col), '[{"id":3,"label":"a"},{"id":2,"label":"b"},{"id":1,"label":"c"},{"id":0,"label":"d"}]');
667
  });
668
669
  QUnit.test('where and findWhere', function(assert) {
670
    assert.expect(8);
671
    var model = new Backbone.Model({a: 1});
672
    var coll = new Backbone.Collection([
673
      model,
674
      {a: 1},
675
      {a: 1, b: 2},
676
      {a: 2, b: 2},
677
      {a: 3}
678
    ]);
679
    assert.equal(coll.where({a: 1}).length, 3);
680
    assert.equal(coll.where({a: 2}).length, 1);
681
    assert.equal(coll.where({a: 3}).length, 1);
682
    assert.equal(coll.where({b: 1}).length, 0);
683
    assert.equal(coll.where({b: 2}).length, 2);
684
    assert.equal(coll.where({a: 1, b: 2}).length, 1);
685
    assert.equal(coll.findWhere({a: 1}), model);
686
    assert.equal(coll.findWhere({a: 4}), void 0);
687
  });
688
689
  QUnit.test('Underscore methods', function(assert) {
690
    assert.expect(21);
691
    assert.equal(col.map(function(model){ return model.get('label'); }).join(' '), 'a b c d');
692
    assert.equal(col.some(function(model){ return model.id === 100; }), false);
693
    assert.equal(col.some(function(model){ return model.id === 0; }), true);
694
    assert.equal(col.reduce(function(m1, m2) {return m1.id > m2.id ? m1 : m2;}).id, 3);
695
    assert.equal(col.reduceRight(function(m1, m2) {return m1.id > m2.id ? m1 : m2;}).id, 3);
696
    assert.equal(col.indexOf(b), 1);
697
    assert.equal(col.size(), 4);
698
    assert.equal(col.rest().length, 3);
699
    assert.ok(!_.includes(col.rest(), a));
700
    assert.ok(_.includes(col.rest(), d));
701
    assert.ok(!col.isEmpty());
702
    assert.ok(!_.includes(col.without(d), d));
703
704
    var wrapped = col.chain();
705
    assert.equal(wrapped.map('id').max().value(), 3);
706
    assert.equal(wrapped.map('id').min().value(), 0);
707
    assert.deepEqual(wrapped
708
      .filter(function(o){ return o.id % 2 === 0; })
709
      .map(function(o){ return o.id * 2; })
710
      .value(),
711
      [4, 0]);
712
    assert.deepEqual(col.difference([c, d]), [a, b]);
713
    assert.ok(col.includes(col.sample()));
714
715
    var first = col.first();
716
    assert.deepEqual(col.groupBy(function(model){ return model.id; })[first.id], [first]);
717
    assert.deepEqual(col.countBy(function(model){ return model.id; }), {0: 1, 1: 1, 2: 1, 3: 1});
718
    assert.deepEqual(col.sortBy(function(model){ return model.id; })[0], col.at(3));
719
    assert.ok(col.indexBy('id')[first.id] === first);
720
  });
721
722
  QUnit.test('Underscore methods with object-style and property-style iteratee', function(assert) {
723
    assert.expect(26);
724
    var model = new Backbone.Model({a: 4, b: 1, e: 3});
725
    var coll = new Backbone.Collection([
726
      {a: 1, b: 1},
727
      {a: 2, b: 1, c: 1},
728
      {a: 3, b: 1},
729
      model
730
    ]);
731
    assert.equal(coll.find({a: 0}), undefined);
732
    assert.deepEqual(coll.find({a: 4}), model);
733
    assert.equal(coll.find('d'), undefined);
734
    assert.deepEqual(coll.find('e'), model);
735
    assert.equal(coll.filter({a: 0}), false);
736
    assert.deepEqual(coll.filter({a: 4}), [model]);
737
    assert.equal(coll.some({a: 0}), false);
738
    assert.equal(coll.some({a: 1}), true);
739
    assert.equal(coll.reject({a: 0}).length, 4);
740
    assert.deepEqual(coll.reject({a: 4}), _.without(coll.models, model));
741
    assert.equal(coll.every({a: 0}), false);
742
    assert.equal(coll.every({b: 1}), true);
743
    assert.deepEqual(coll.partition({a: 0})[0], []);
744
    assert.deepEqual(coll.partition({a: 0})[1], coll.models);
745
    assert.deepEqual(coll.partition({a: 4})[0], [model]);
746
    assert.deepEqual(coll.partition({a: 4})[1], _.without(coll.models, model));
747
    assert.deepEqual(coll.map({a: 2}), [false, true, false, false]);
748
    assert.deepEqual(coll.map('a'), [1, 2, 3, 4]);
749
    assert.deepEqual(coll.sortBy('a')[3], model);
750
    assert.deepEqual(coll.sortBy('e')[0], model);
751
    assert.deepEqual(coll.countBy({a: 4}), {'false': 3, 'true': 1});
752
    assert.deepEqual(coll.countBy('d'), {'undefined': 4});
753
    assert.equal(coll.findIndex({b: 1}), 0);
754
    assert.equal(coll.findIndex({b: 9}), -1);
755
    assert.equal(coll.findLastIndex({b: 1}), 3);
756
    assert.equal(coll.findLastIndex({b: 9}), -1);
757
  });
758
759
  QUnit.test('reset', function(assert) {
760
    assert.expect(16);
761
762
    var resetCount = 0;
763
    var models = col.models;
764
    col.on('reset', function() { resetCount += 1; });
765
    col.reset([]);
766
    assert.equal(resetCount, 1);
767
    assert.equal(col.length, 0);
768
    assert.equal(col.last(), null);
769
    col.reset(models);
770
    assert.equal(resetCount, 2);
771
    assert.equal(col.length, 4);
772
    assert.equal(col.last(), d);
773
    col.reset(_.map(models, function(m){ return m.attributes; }));
774
    assert.equal(resetCount, 3);
775
    assert.equal(col.length, 4);
776
    assert.ok(col.last() !== d);
777
    assert.ok(_.isEqual(col.last().attributes, d.attributes));
778
    col.reset();
779
    assert.equal(col.length, 0);
780
    assert.equal(resetCount, 4);
781
782
    var f = new Backbone.Model({id: 20, label: 'f'});
783
    col.reset([undefined, f]);
784
    assert.equal(col.length, 2);
785
    assert.equal(resetCount, 5);
786
787
    col.reset(new Array(4));
788
    assert.equal(col.length, 4);
789
    assert.equal(resetCount, 6);
790
  });
791
792
  QUnit.test('reset with different values', function(assert) {
793
    var collection = new Backbone.Collection({id: 1});
794
    collection.reset({id: 1, a: 1});
795
    assert.equal(collection.get(1).get('a'), 1);
796
  });
797
798
  QUnit.test('same references in reset', function(assert) {
799
    var model = new Backbone.Model({id: 1});
800
    var collection = new Backbone.Collection({id: 1});
801
    collection.reset(model);
802
    assert.equal(collection.get(1), model);
803
  });
804
805
  QUnit.test('reset passes caller options', function(assert) {
806
    assert.expect(3);
807
    var Model = Backbone.Model.extend({
808
      initialize: function(attrs, options) {
809
        this.modelParameter = options.modelParameter;
810
      }
811
    });
812
    var collection = new (Backbone.Collection.extend({model: Model}))();
813
    collection.reset([{astring: 'green', anumber: 1}, {astring: 'blue', anumber: 2}], {modelParameter: 'model parameter'});
814
    assert.equal(collection.length, 2);
815
    collection.each(function(model) {
816
      assert.equal(model.modelParameter, 'model parameter');
817
    });
818
  });
819
820
  QUnit.test('reset does not alter options by reference', function(assert) {
821
    assert.expect(2);
822
    var collection = new Backbone.Collection([{id: 1}]);
823
    var origOpts = {};
824
    collection.on('reset', function(coll, opts){
825
      assert.equal(origOpts.previousModels, undefined);
826
      assert.equal(opts.previousModels[0].id, 1);
827
    });
828
    collection.reset([], origOpts);
829
  });
830
831
  QUnit.test('trigger custom events on models', function(assert) {
832
    assert.expect(1);
833
    var fired = null;
834
    a.on('custom', function() { fired = true; });
835
    a.trigger('custom');
836
    assert.equal(fired, true);
837
  });
838
839
  QUnit.test('add does not alter arguments', function(assert) {
840
    assert.expect(2);
841
    var attrs = {};
842
    var models = [attrs];
843
    new Backbone.Collection().add(models);
844
    assert.equal(models.length, 1);
845
    assert.ok(attrs === models[0]);
846
  });
847
848
  QUnit.test('#714: access `model.collection` in a brand new model.', function(assert) {
849
    assert.expect(2);
850
    var collection = new Backbone.Collection;
851
    collection.url = '/test';
852
    var Model = Backbone.Model.extend({
853
      set: function(attrs) {
854
        assert.equal(attrs.prop, 'value');
855
        assert.equal(this.collection, collection);
856
        return this;
857
      }
858
    });
859
    collection.model = Model;
860
    collection.create({prop: 'value'});
861
  });
862
863
  QUnit.test('#574, remove its own reference to the .models array.', function(assert) {
864
    assert.expect(2);
865
    var collection = new Backbone.Collection([
866
      {id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}
867
    ]);
868
    assert.equal(collection.length, 6);
869
    collection.remove(collection.models);
870
    assert.equal(collection.length, 0);
871
  });
872
873
  QUnit.test('#861, adding models to a collection which do not pass validation, with validate:true', function(assert) {
874
    assert.expect(2);
875
    var Model = Backbone.Model.extend({
876
      validate: function(attrs) {
877
        if (attrs.id === 3) return "id can't be 3";
878
      }
879
    });
880
881
    var Collection = Backbone.Collection.extend({
882
      model: Model
883
    });
884
885
    var collection = new Collection;
886
    collection.on('invalid', function() { assert.ok(true); });
887
888
    collection.add([{id: 1}, {id: 2}, {id: 3}, {id: 4}, {id: 5}, {id: 6}], {validate: true});
889
    assert.deepEqual(collection.pluck('id'), [1, 2, 4, 5, 6]);
890
  });
891
892
  QUnit.test('Invalid models are discarded with validate:true.', function(assert) {
893
    assert.expect(5);
894
    var collection = new Backbone.Collection;
895
    collection.on('test', function() { assert.ok(true); });
896
    collection.model = Backbone.Model.extend({
897
      validate: function(attrs){ if (!attrs.valid) return 'invalid'; }
898
    });
899
    var model = new collection.model({id: 1, valid: true});
900
    collection.add([model, {id: 2}], {validate: true});
901
    model.trigger('test');
902
    assert.ok(collection.get(model.cid));
903
    assert.ok(collection.get(1));
904
    assert.ok(!collection.get(2));
905
    assert.equal(collection.length, 1);
906
  });
907
908
  QUnit.test('multiple copies of the same model', function(assert) {
909
    assert.expect(3);
910
    var collection = new Backbone.Collection();
911
    var model = new Backbone.Model();
912
    collection.add([model, model]);
913
    assert.equal(collection.length, 1);
914
    collection.add([{id: 1}, {id: 1}]);
915
    assert.equal(collection.length, 2);
916
    assert.equal(collection.last().id, 1);
917
  });
918
919
  QUnit.test('#964 - collection.get return inconsistent', function(assert) {
920
    assert.expect(2);
921
    var collection = new Backbone.Collection();
922
    assert.ok(collection.get(null) === undefined);
923
    assert.ok(collection.get() === undefined);
924
  });
925
926
  QUnit.test('#1112 - passing options.model sets collection.model', function(assert) {
927
    assert.expect(2);
928
    var Model = Backbone.Model.extend({});
929
    var collection = new Backbone.Collection([{id: 1}], {model: Model});
930
    assert.ok(collection.model === Model);
931
    assert.ok(collection.at(0) instanceof Model);
932
  });
933
934
  QUnit.test('null and undefined are invalid ids.', function(assert) {
935
    assert.expect(2);
936
    var model = new Backbone.Model({id: 1});
937
    var collection = new Backbone.Collection([model]);
938
    model.set({id: null});
939
    assert.ok(!collection.get('null'));
940
    model.set({id: 1});
941
    model.set({id: undefined});
942
    assert.ok(!collection.get('undefined'));
943
  });
944
945
  QUnit.test('falsy comparator', function(assert) {
946
    assert.expect(4);
947
    var Col = Backbone.Collection.extend({
948
      comparator: function(model){ return model.id; }
949
    });
950
    var collection = new Col();
951
    var colFalse = new Col(null, {comparator: false});
952
    var colNull = new Col(null, {comparator: null});
953
    var colUndefined = new Col(null, {comparator: undefined});
954
    assert.ok(collection.comparator);
955
    assert.ok(!colFalse.comparator);
956
    assert.ok(!colNull.comparator);
957
    assert.ok(colUndefined.comparator);
958
  });
959
960
  QUnit.test('#1355 - `options` is passed to success callbacks', function(assert) {
961
    assert.expect(2);
962
    var m = new Backbone.Model({x: 1});
963
    var collection = new Backbone.Collection();
964
    var opts = {
965
      opts: true,
966
      success: function(coll, resp, options) {
967
        assert.ok(options.opts);
968
      }
969
    };
970
    collection.sync = m.sync = function( method, coll, options ){
971
      options.success({});
972
    };
973
    collection.fetch(opts);
974
    collection.create(m, opts);
975
  });
976
977
  QUnit.test("#1412 - Trigger 'request' and 'sync' events.", function(assert) {
978
    assert.expect(4);
979
    var collection = new Backbone.Collection;
980
    collection.url = '/test';
981
    Backbone.ajax = function(settings){ settings.success(); };
982
983
    collection.on('request', function(obj, xhr, options) {
984
      assert.ok(obj === collection, "collection has correct 'request' event after fetching");
985
    });
986
    collection.on('sync', function(obj, response, options) {
987
      assert.ok(obj === collection, "collection has correct 'sync' event after fetching");
988
    });
989
    collection.fetch();
990
    collection.off();
991
992
    collection.on('request', function(obj, xhr, options) {
993
      assert.ok(obj === collection.get(1), "collection has correct 'request' event after one of its models save");
994
    });
995
    collection.on('sync', function(obj, response, options) {
996
      assert.ok(obj === collection.get(1), "collection has correct 'sync' event after one of its models save");
997
    });
998
    collection.create({id: 1});
999
    collection.off();
1000
  });
1001
1002
  QUnit.test('#3283 - fetch, create calls success with context', function(assert) {
1003
    assert.expect(2);
1004
    var collection = new Backbone.Collection;
1005
    collection.url = '/test';
1006
    Backbone.ajax = function(settings) {
1007
      settings.success.call(settings.context);
1008
    };
1009
    var obj = {};
1010
    var options = {
1011
      context: obj,
1012
      success: function() {
1013
        assert.equal(this, obj);
1014
      }
1015
    };
1016
1017
    collection.fetch(options);
1018
    collection.create({id: 1}, options);
1019
  });
1020
1021
  QUnit.test('#1447 - create with wait adds model.', function(assert) {
1022
    assert.expect(1);
1023
    var collection = new Backbone.Collection;
1024
    var model = new Backbone.Model;
1025
    model.sync = function(method, m, options){ options.success(); };
1026
    collection.on('add', function(){ assert.ok(true); });
1027
    collection.create(model, {wait: true});
1028
  });
1029
1030
  QUnit.test('#1448 - add sorts collection after merge.', function(assert) {
1031
    assert.expect(1);
1032
    var collection = new Backbone.Collection([
1033
      {id: 1, x: 1},
1034
      {id: 2, x: 2}
1035
    ]);
1036
    collection.comparator = function(model){ return model.get('x'); };
1037
    collection.add({id: 1, x: 3}, {merge: true});
1038
    assert.deepEqual(collection.pluck('id'), [2, 1]);
1039
  });
1040
1041
  QUnit.test('#1655 - groupBy can be used with a string argument.', function(assert) {
1042
    assert.expect(3);
1043
    var collection = new Backbone.Collection([{x: 1}, {x: 2}]);
1044
    var grouped = collection.groupBy('x');
1045
    assert.strictEqual(_.keys(grouped).length, 2);
1046
    assert.strictEqual(grouped[1][0].get('x'), 1);
1047
    assert.strictEqual(grouped[2][0].get('x'), 2);
1048
  });
1049
1050
  QUnit.test('#1655 - sortBy can be used with a string argument.', function(assert) {
1051
    assert.expect(1);
1052
    var collection = new Backbone.Collection([{x: 3}, {x: 1}, {x: 2}]);
1053
    var values = _.map(collection.sortBy('x'), function(model) {
1054
      return model.get('x');
1055
    });
1056
    assert.deepEqual(values, [1, 2, 3]);
1057
  });
1058
1059
  QUnit.test('#1604 - Removal during iteration.', function(assert) {
1060
    assert.expect(0);
1061
    var collection = new Backbone.Collection([{}, {}]);
1062
    collection.on('add', function() {
1063
      collection.at(0).destroy();
1064
    });
1065
    collection.add({}, {at: 0});
1066
  });
1067
1068
  QUnit.test('#1638 - `sort` during `add` triggers correctly.', function(assert) {
1069
    var collection = new Backbone.Collection;
1070
    collection.comparator = function(model) { return model.get('x'); };
1071
    var added = [];
1072
    collection.on('add', function(model) {
1073
      model.set({x: 3});
1074
      collection.sort();
1075
      added.push(model.id);
1076
    });
1077
    collection.add([{id: 1, x: 1}, {id: 2, x: 2}]);
1078
    assert.deepEqual(added, [1, 2]);
1079
  });
1080
1081
  QUnit.test('fetch parses models by default', function(assert) {
1082
    assert.expect(1);
1083
    var model = {};
1084
    var Collection = Backbone.Collection.extend({
1085
      url: 'test',
1086
      model: Backbone.Model.extend({
1087
        parse: function(resp) {
1088
          assert.strictEqual(resp, model);
1089
        }
1090
      })
1091
    });
1092
    new Collection().fetch();
1093
    this.ajaxSettings.success([model]);
1094
  });
1095
1096
  QUnit.test("`sort` shouldn't always fire on `add`", function(assert) {
1097
    assert.expect(1);
1098
    var collection = new Backbone.Collection([{id: 1}, {id: 2}, {id: 3}], {
1099
      comparator: 'id'
1100
    });
1101
    collection.sort = function(){ assert.ok(true); };
1102
    collection.add([]);
1103
    collection.add({id: 1});
1104
    collection.add([{id: 2}, {id: 3}]);
1105
    collection.add({id: 4});
1106
  });
1107
1108
  QUnit.test('#1407 parse option on constructor parses collection and models', function(assert) {
1109
    assert.expect(2);
1110
    var model = {
1111
      namespace: [{id: 1}, {id: 2}]
1112
    };
1113
    var Collection = Backbone.Collection.extend({
1114
      model: Backbone.Model.extend({
1115
        parse: function(m) {
1116
          m.name = 'test';
1117
          return m;
1118
        }
1119
      }),
1120
      parse: function(m) {
1121
        return m.namespace;
1122
      }
1123
    });
1124
    var collection = new Collection(model, {parse: true});
1125
1126
    assert.equal(collection.length, 2);
1127
    assert.equal(collection.at(0).get('name'), 'test');
1128
  });
1129
1130
  QUnit.test('#1407 parse option on reset parses collection and models', function(assert) {
1131
    assert.expect(2);
1132
    var model = {
1133
      namespace: [{id: 1}, {id: 2}]
1134
    };
1135
    var Collection = Backbone.Collection.extend({
1136
      model: Backbone.Model.extend({
1137
        parse: function(m) {
1138
          m.name = 'test';
1139
          return m;
1140
        }
1141
      }),
1142
      parse: function(m) {
1143
        return m.namespace;
1144
      }
1145
    });
1146
    var collection = new Collection();
1147
    collection.reset(model, {parse: true});
1148
1149
    assert.equal(collection.length, 2);
1150
    assert.equal(collection.at(0).get('name'), 'test');
1151
  });
1152
1153
1154
  QUnit.test('Reset includes previous models in triggered event.', function(assert) {
1155
    assert.expect(1);
1156
    var model = new Backbone.Model();
1157
    var collection = new Backbone.Collection([model]);
1158
    collection.on('reset', function(coll, options) {
1159
      assert.deepEqual(options.previousModels, [model]);
1160
    });
1161
    collection.reset([]);
1162
  });
1163
1164
  QUnit.test('set', function(assert) {
1165
    var m1 = new Backbone.Model();
1166
    var m2 = new Backbone.Model({id: 2});
1167
    var m3 = new Backbone.Model();
1168
    var collection = new Backbone.Collection([m1, m2]);
1169
1170
    // Test add/change/remove events
1171
    collection.on('add', function(model) {
1172
      assert.strictEqual(model, m3);
1173
    });
1174
    collection.on('change', function(model) {
1175
      assert.strictEqual(model, m2);
1176
    });
1177
    collection.on('remove', function(model) {
1178
      assert.strictEqual(model, m1);
1179
    });
1180
1181
    // remove: false doesn't remove any models
1182
    collection.set([], {remove: false});
1183
    assert.strictEqual(collection.length, 2);
1184
1185
    // add: false doesn't add any models
1186
    collection.set([m1, m2, m3], {add: false});
1187
    assert.strictEqual(collection.length, 2);
1188
1189
    // merge: false doesn't change any models
1190
    collection.set([m1, {id: 2, a: 1}], {merge: false});
1191
    assert.strictEqual(m2.get('a'), void 0);
1192
1193
    // add: false, remove: false only merges existing models
1194
    collection.set([m1, {id: 2, a: 0}, m3, {id: 4}], {add: false, remove: false});
1195
    assert.strictEqual(collection.length, 2);
1196
    assert.strictEqual(m2.get('a'), 0);
1197
1198
    // default options add/remove/merge as appropriate
1199
    collection.set([{id: 2, a: 1}, m3]);
1200
    assert.strictEqual(collection.length, 2);
1201
    assert.strictEqual(m2.get('a'), 1);
1202
1203
    // Test removing models not passing an argument
1204
    collection.off('remove').on('remove', function(model) {
1205
      assert.ok(model === m2 || model === m3);
1206
    });
1207
    collection.set([]);
1208
    assert.strictEqual(collection.length, 0);
1209
1210
    // Test null models on set doesn't clear collection
1211
    collection.off();
1212
    collection.set([{id: 1}]);
1213
    collection.set();
1214
    assert.strictEqual(collection.length, 1);
1215
  });
1216
1217
  QUnit.test('set with only cids', function(assert) {
1218
    assert.expect(3);
1219
    var m1 = new Backbone.Model;
1220
    var m2 = new Backbone.Model;
1221
    var collection = new Backbone.Collection;
1222
    collection.set([m1, m2]);
1223
    assert.equal(collection.length, 2);
1224
    collection.set([m1]);
1225
    assert.equal(collection.length, 1);
1226
    collection.set([m1, m1, m1, m2, m2], {remove: false});
1227
    assert.equal(collection.length, 2);
1228
  });
1229
1230
  QUnit.test('set with only idAttribute', function(assert) {
1231
    assert.expect(3);
1232
    var m1 = {_id: 1};
1233
    var m2 = {_id: 2};
1234
    var Col = Backbone.Collection.extend({
1235
      model: Backbone.Model.extend({
1236
        idAttribute: '_id'
1237
      })
1238
    });
1239
    var collection = new Col;
1240
    collection.set([m1, m2]);
1241
    assert.equal(collection.length, 2);
1242
    collection.set([m1]);
1243
    assert.equal(collection.length, 1);
1244
    collection.set([m1, m1, m1, m2, m2], {remove: false});
1245
    assert.equal(collection.length, 2);
1246
  });
1247
1248
  QUnit.test('set + merge with default values defined', function(assert) {
1249
    var Model = Backbone.Model.extend({
1250
      defaults: {
1251
        key: 'value'
1252
      }
1253
    });
1254
    var m = new Model({id: 1});
1255
    var collection = new Backbone.Collection([m], {model: Model});
1256
    assert.equal(collection.first().get('key'), 'value');
1257
1258
    collection.set({id: 1, key: 'other'});
1259
    assert.equal(collection.first().get('key'), 'other');
1260
1261
    collection.set({id: 1, other: 'value'});
1262
    assert.equal(collection.first().get('key'), 'other');
1263
    assert.equal(collection.length, 1);
1264
  });
1265
1266
  QUnit.test('merge without mutation', function(assert) {
1267
    var Model = Backbone.Model.extend({
1268
      initialize: function(attrs, options) {
1269
        if (attrs.child) {
1270
          this.set('child', new Model(attrs.child, options), options);
1271
        }
1272
      }
1273
    });
1274
    var Collection = Backbone.Collection.extend({model: Model});
1275
    var data = [{id: 1, child: {id: 2}}];
1276
    var collection = new Collection(data);
1277
    assert.equal(collection.first().id, 1);
1278
    collection.set(data);
1279
    assert.equal(collection.first().id, 1);
1280
    collection.set([{id: 2, child: {id: 2}}].concat(data));
1281
    assert.deepEqual(collection.pluck('id'), [2, 1]);
1282
  });
1283
1284
  QUnit.test('`set` and model level `parse`', function(assert) {
1285
    var Model = Backbone.Model.extend({});
1286
    var Collection = Backbone.Collection.extend({
1287
      model: Model,
1288
      parse: function(res) { return _.map(res.models, 'model'); }
1289
    });
1290
    var model = new Model({id: 1});
1291
    var collection = new Collection(model);
1292
    collection.set({models: [
1293
      {model: {id: 1}},
1294
      {model: {id: 2}}
1295
    ]}, {parse: true});
1296
    assert.equal(collection.first(), model);
1297
  });
1298
1299
  QUnit.test('`set` data is only parsed once', function(assert) {
1300
    var collection = new Backbone.Collection();
1301
    collection.model = Backbone.Model.extend({
1302
      parse: function(data) {
1303
        assert.equal(data.parsed, void 0);
1304
        data.parsed = true;
1305
        return data;
1306
      }
1307
    });
1308
    collection.set({}, {parse: true});
1309
  });
1310
1311
  QUnit.test('`set` matches input order in the absence of a comparator', function(assert) {
1312
    var one = new Backbone.Model({id: 1});
1313
    var two = new Backbone.Model({id: 2});
1314
    var three = new Backbone.Model({id: 3});
1315
    var collection = new Backbone.Collection([one, two, three]);
1316
    collection.set([{id: 3}, {id: 2}, {id: 1}]);
1317
    assert.deepEqual(collection.models, [three, two, one]);
1318
    collection.set([{id: 1}, {id: 2}]);
1319
    assert.deepEqual(collection.models, [one, two]);
1320
    collection.set([two, three, one]);
1321
    assert.deepEqual(collection.models, [two, three, one]);
1322
    collection.set([{id: 1}, {id: 2}], {remove: false});
1323
    assert.deepEqual(collection.models, [two, three, one]);
1324
    collection.set([{id: 1}, {id: 2}, {id: 3}], {merge: false});
1325
    assert.deepEqual(collection.models, [one, two, three]);
1326
    collection.set([three, two, one, {id: 4}], {add: false});
1327
    assert.deepEqual(collection.models, [one, two, three]);
1328
  });
1329
1330
  QUnit.test('#1894 - Push should not trigger a sort', function(assert) {
1331
    assert.expect(0);
1332
    var Collection = Backbone.Collection.extend({
1333
      comparator: 'id',
1334
      sort: function() { assert.ok(false); }
1335
    });
1336
    new Collection().push({id: 1});
1337
  });
1338
1339
  QUnit.test('#2428 - push duplicate models, return the correct one', function(assert) {
1340
    assert.expect(1);
1341
    var collection = new Backbone.Collection;
1342
    var model1 = collection.push({id: 101});
1343
    var model2 = collection.push({id: 101});
1344
    assert.ok(model2.cid === model1.cid);
1345
  });
1346
1347
  QUnit.test('`set` with non-normal id', function(assert) {
1348
    var Collection = Backbone.Collection.extend({
1349
      model: Backbone.Model.extend({idAttribute: '_id'})
1350
    });
1351
    var collection = new Collection({_id: 1});
1352
    collection.set([{_id: 1, a: 1}], {add: false});
1353
    assert.equal(collection.first().get('a'), 1);
1354
  });
1355
1356
  QUnit.test('#1894 - `sort` can optionally be turned off', function(assert) {
1357
    assert.expect(0);
1358
    var Collection = Backbone.Collection.extend({
1359
      comparator: 'id',
1360
      sort: function() { assert.ok(false); }
1361
    });
1362
    new Collection().add({id: 1}, {sort: false});
1363
  });
1364
1365
  QUnit.test('#1915 - `parse` data in the right order in `set`', function(assert) {
1366
    var collection = new (Backbone.Collection.extend({
1367
      parse: function(data) {
1368
        assert.strictEqual(data.status, 'ok');
1369
        return data.data;
1370
      }
1371
    }));
1372
    var res = {status: 'ok', data: [{id: 1}]};
1373
    collection.set(res, {parse: true});
1374
  });
1375
1376
  QUnit.test('#1939 - `parse` is passed `options`', function(assert) {
1377
    var done = assert.async();
1378
    assert.expect(1);
1379
    var collection = new (Backbone.Collection.extend({
1380
      url: '/',
1381
      parse: function(data, options) {
1382
        assert.strictEqual(options.xhr.someHeader, 'headerValue');
1383
        return data;
1384
      }
1385
    }));
1386
    var ajax = Backbone.ajax;
1387
    Backbone.ajax = function(params) {
1388
      _.defer(params.success, []);
1389
      return {someHeader: 'headerValue'};
1390
    };
1391
    collection.fetch({
1392
      success: function() { done(); }
1393
    });
1394
    Backbone.ajax = ajax;
1395
  });
1396
1397
  QUnit.test('fetch will pass extra options to success callback', function(assert) {
1398
    assert.expect(1);
1399
    var SpecialSyncCollection = Backbone.Collection.extend({
1400
      url: '/test',
1401
      sync: function(method, collection, options) {
1402
        _.extend(options, {specialSync: true});
1403
        return Backbone.Collection.prototype.sync.call(this, method, collection, options);
1404
      }
1405
    });
1406
1407
    var collection = new SpecialSyncCollection();
1408
1409
    var onSuccess = function(coll, resp, options) {
1410
      assert.ok(options.specialSync, 'Options were passed correctly to callback');
1411
    };
1412
1413
    collection.fetch({success: onSuccess});
1414
    this.ajaxSettings.success();
1415
  });
1416
1417
  QUnit.test('`add` only `sort`s when necessary', function(assert) {
1418
    assert.expect(2);
1419
    var collection = new (Backbone.Collection.extend({
1420
      comparator: 'a'
1421
    }))([{id: 1}, {id: 2}, {id: 3}]);
1422
    collection.on('sort', function() { assert.ok(true); });
1423
    collection.add({id: 4}); // do sort, new model
1424
    collection.add({id: 1, a: 1}, {merge: true}); // do sort, comparator change
1425
    collection.add({id: 1, b: 1}, {merge: true}); // don't sort, no comparator change
1426
    collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no comparator change
1427
    collection.add(collection.models); // don't sort, nothing new
1428
    collection.add(collection.models, {merge: true}); // don't sort
1429
  });
1430
1431
  QUnit.test('`add` only `sort`s when necessary with comparator function', function(assert) {
1432
    assert.expect(3);
1433
    var collection = new (Backbone.Collection.extend({
1434
      comparator: function(m1, m2) {
1435
        return m1.get('a') > m2.get('a') ? 1 : (m1.get('a') < m2.get('a') ? -1 : 0);
1436
      }
1437
    }))([{id: 1}, {id: 2}, {id: 3}]);
1438
    collection.on('sort', function() { assert.ok(true); });
1439
    collection.add({id: 4}); // do sort, new model
1440
    collection.add({id: 1, a: 1}, {merge: true}); // do sort, model change
1441
    collection.add({id: 1, b: 1}, {merge: true}); // do sort, model change
1442
    collection.add({id: 1, a: 1}, {merge: true}); // don't sort, no model change
1443
    collection.add(collection.models); // don't sort, nothing new
1444
    collection.add(collection.models, {merge: true}); // don't sort
1445
  });
1446
1447
  QUnit.test('Attach options to collection.', function(assert) {
1448
    assert.expect(2);
1449
    var Model = Backbone.Model;
1450
    var comparator = function(){};
1451
1452
    var collection = new Backbone.Collection([], {
1453
      model: Model,
1454
      comparator: comparator
1455
    });
1456
1457
    assert.ok(collection.model === Model);
1458
    assert.ok(collection.comparator === comparator);
1459
  });
1460
1461
  QUnit.test('Pass falsey for `models` for empty Col with `options`', function(assert) {
1462
    assert.expect(9);
1463
    var opts = {a: 1, b: 2};
1464
    _.forEach([undefined, null, false], function(falsey) {
1465
      var Collection = Backbone.Collection.extend({
1466
        initialize: function(models, options) {
1467
          assert.strictEqual(models, falsey);
1468
          assert.strictEqual(options, opts);
1469
        }
1470
      });
1471
1472
      var collection = new Collection(falsey, opts);
1473
      assert.strictEqual(collection.length, 0);
1474
    });
1475
  });
1476
1477
  QUnit.test('`add` overrides `set` flags', function(assert) {
1478
    var collection = new Backbone.Collection();
1479
    collection.once('add', function(model, coll, options) {
1480
      coll.add({id: 2}, options);
1481
    });
1482
    collection.set({id: 1});
1483
    assert.equal(collection.length, 2);
1484
  });
1485
1486
  QUnit.test('#2606 - Collection#create, success arguments', function(assert) {
1487
    assert.expect(1);
1488
    var collection = new Backbone.Collection;
1489
    collection.url = 'test';
1490
    collection.create({}, {
1491
      success: function(model, resp, options) {
1492
        assert.strictEqual(resp, 'response');
1493
      }
1494
    });
1495
    this.ajaxSettings.success('response');
1496
  });
1497
1498
  QUnit.test('#2612 - nested `parse` works with `Collection#set`', function(assert) {
1499
1500
    var Job = Backbone.Model.extend({
1501
      constructor: function() {
1502
        this.items = new Items();
1503
        Backbone.Model.apply(this, arguments);
1504
      },
1505
      parse: function(attrs) {
1506
        this.items.set(attrs.items, {parse: true});
1507
        return _.omit(attrs, 'items');
1508
      }
1509
    });
1510
1511
    var Item = Backbone.Model.extend({
1512
      constructor: function() {
1513
        this.subItems = new Backbone.Collection();
1514
        Backbone.Model.apply(this, arguments);
1515
      },
1516
      parse: function(attrs) {
1517
        this.subItems.set(attrs.subItems, {parse: true});
1518
        return _.omit(attrs, 'subItems');
1519
      }
1520
    });
1521
1522
    var Items = Backbone.Collection.extend({
1523
      model: Item
1524
    });
1525
1526
    var data = {
1527
      name: 'JobName',
1528
      id: 1,
1529
      items: [{
1530
        id: 1,
1531
        name: 'Sub1',
1532
        subItems: [
1533
          {id: 1, subName: 'One'},
1534
          {id: 2, subName: 'Two'}
1535
        ]
1536
      }, {
1537
        id: 2,
1538
        name: 'Sub2',
1539
        subItems: [
1540
          {id: 3, subName: 'Three'},
1541
          {id: 4, subName: 'Four'}
1542
        ]
1543
      }]
1544
    };
1545
1546
    var newData = {
1547
      name: 'NewJobName',
1548
      id: 1,
1549
      items: [{
1550
        id: 1,
1551
        name: 'NewSub1',
1552
        subItems: [
1553
          {id: 1, subName: 'NewOne'},
1554
          {id: 2, subName: 'NewTwo'}
1555
        ]
1556
      }, {
1557
        id: 2,
1558
        name: 'NewSub2',
1559
        subItems: [
1560
          {id: 3, subName: 'NewThree'},
1561
          {id: 4, subName: 'NewFour'}
1562
        ]
1563
      }]
1564
    };
1565
1566
    var job = new Job(data, {parse: true});
1567
    assert.equal(job.get('name'), 'JobName');
1568
    assert.equal(job.items.at(0).get('name'), 'Sub1');
1569
    assert.equal(job.items.length, 2);
1570
    assert.equal(job.items.get(1).subItems.get(1).get('subName'), 'One');
1571
    assert.equal(job.items.get(2).subItems.get(3).get('subName'), 'Three');
1572
    job.set(job.parse(newData, {parse: true}));
1573
    assert.equal(job.get('name'), 'NewJobName');
1574
    assert.equal(job.items.at(0).get('name'), 'NewSub1');
1575
    assert.equal(job.items.length, 2);
1576
    assert.equal(job.items.get(1).subItems.get(1).get('subName'), 'NewOne');
1577
    assert.equal(job.items.get(2).subItems.get(3).get('subName'), 'NewThree');
1578
  });
1579
1580
  QUnit.test('_addReference binds all collection events & adds to the lookup hashes', function(assert) {
1581
    assert.expect(8);
1582
1583
    var calls = {add: 0, remove: 0};
1584
1585
    var Collection = Backbone.Collection.extend({
1586
1587
      _addReference: function(model) {
1588
        Backbone.Collection.prototype._addReference.apply(this, arguments);
1589
        calls.add++;
1590
        assert.equal(model, this._byId[model.id]);
1591
        assert.equal(model, this._byId[model.cid]);
1592
        assert.equal(model._events.all.length, 1);
1593
      },
1594
1595
      _removeReference: function(model) {
1596
        Backbone.Collection.prototype._removeReference.apply(this, arguments);
1597
        calls.remove++;
1598
        assert.equal(this._byId[model.id], void 0);
1599
        assert.equal(this._byId[model.cid], void 0);
1600
        assert.equal(model.collection, void 0);
1601
      }
1602
1603
    });
1604
1605
    var collection = new Collection();
1606
    var model = collection.add({id: 1});
1607
    collection.remove(model);
1608
1609
    assert.equal(calls.add, 1);
1610
    assert.equal(calls.remove, 1);
1611
  });
1612
1613
  QUnit.test('Do not allow duplicate models to be `add`ed or `set`', function(assert) {
1614
    var collection = new Backbone.Collection();
1615
1616
    collection.add([{id: 1}, {id: 1}]);
1617
    assert.equal(collection.length, 1);
1618
    assert.equal(collection.models.length, 1);
1619
1620
    collection.set([{id: 1}, {id: 1}]);
1621
    assert.equal(collection.length, 1);
1622
    assert.equal(collection.models.length, 1);
1623
  });
1624
1625
  QUnit.test('#3020: #set with {add: false} should not throw.', function(assert) {
1626
    assert.expect(2);
1627
    var collection = new Backbone.Collection;
1628
    collection.set([{id: 1}], {add: false});
1629
    assert.strictEqual(collection.length, 0);
1630
    assert.strictEqual(collection.models.length, 0);
1631
  });
1632
1633
  QUnit.test('create with wait, model instance, #3028', function(assert) {
1634
    assert.expect(1);
1635
    var collection = new Backbone.Collection();
1636
    var model = new Backbone.Model({id: 1});
1637
    model.sync = function(){
1638
      assert.equal(this.collection, collection);
1639
    };
1640
    collection.create(model, {wait: true});
1641
  });
1642
1643
  QUnit.test('modelId', function(assert) {
1644
    var Stooge = Backbone.Model.extend();
1645
    var StoogeCollection = Backbone.Collection.extend({model: Stooge});
1646
1647
    // Default to using `Collection::model::idAttribute`.
1648
    assert.equal(StoogeCollection.prototype.modelId({id: 1}), 1);
1649
    Stooge.prototype.idAttribute = '_id';
1650
    assert.equal(StoogeCollection.prototype.modelId({_id: 1}), 1);
1651
  });
1652
1653
  QUnit.test('Polymorphic models work with "simple" constructors', function(assert) {
1654
    var A = Backbone.Model.extend();
1655
    var B = Backbone.Model.extend();
1656
    var C = Backbone.Collection.extend({
1657
      model: function(attrs) {
1658
        return attrs.type === 'a' ? new A(attrs) : new B(attrs);
1659
      }
1660
    });
1661
    var collection = new C([{id: 1, type: 'a'}, {id: 2, type: 'b'}]);
1662
    assert.equal(collection.length, 2);
1663
    assert.ok(collection.at(0) instanceof A);
1664
    assert.equal(collection.at(0).id, 1);
1665
    assert.ok(collection.at(1) instanceof B);
1666
    assert.equal(collection.at(1).id, 2);
1667
  });
1668
1669
  QUnit.test('Polymorphic models work with "advanced" constructors', function(assert) {
1670
    var A = Backbone.Model.extend({idAttribute: '_id'});
1671
    var B = Backbone.Model.extend({idAttribute: '_id'});
1672
    var C = Backbone.Collection.extend({
1673
      model: Backbone.Model.extend({
1674
        constructor: function(attrs) {
1675
          return attrs.type === 'a' ? new A(attrs) : new B(attrs);
1676
        },
1677
1678
        idAttribute: '_id'
1679
      })
1680
    });
1681
    var collection = new C([{_id: 1, type: 'a'}, {_id: 2, type: 'b'}]);
1682
    assert.equal(collection.length, 2);
1683
    assert.ok(collection.at(0) instanceof A);
1684
    assert.equal(collection.at(0), collection.get(1));
1685
    assert.ok(collection.at(1) instanceof B);
1686
    assert.equal(collection.at(1), collection.get(2));
1687
1688
    C = Backbone.Collection.extend({
1689
      model: function(attrs) {
1690
        return attrs.type === 'a' ? new A(attrs) : new B(attrs);
1691
      },
1692
1693
      modelId: function(attrs) {
1694
        return attrs.type + '-' + attrs.id;
1695
      }
1696
    });
1697
    collection = new C([{id: 1, type: 'a'}, {id: 1, type: 'b'}]);
1698
    assert.equal(collection.length, 2);
1699
    assert.ok(collection.at(0) instanceof A);
1700
    assert.equal(collection.at(0), collection.get('a-1'));
1701
    assert.ok(collection.at(1) instanceof B);
1702
    assert.equal(collection.at(1), collection.get('b-1'));
1703
  });
1704
1705
  QUnit.test('Collection with polymorphic models receives default id from modelId', function(assert) {
1706
    assert.expect(6);
1707
    // When the polymorphic models use 'id' for the idAttribute, all is fine.
1708
    var C1 = Backbone.Collection.extend({
1709
      model: function(attrs) {
1710
        return new Backbone.Model(attrs);
1711
      }
1712
    });
1713
    var c1 = new C1({id: 1});
1714
    assert.equal(c1.get(1).id, 1);
1715
    assert.equal(c1.modelId({id: 1}), 1);
1716
1717
    // If the polymorphic models define their own idAttribute,
1718
    // the modelId method should be overridden, for the reason below.
1719
    var M = Backbone.Model.extend({
1720
      idAttribute: '_id'
1721
    });
1722
    var C2 = Backbone.Collection.extend({
1723
      model: function(attrs) {
1724
        return new M(attrs);
1725
      }
1726
    });
1727
    var c2 = new C2({'_id': 1});
1728
    assert.equal(c2.get(1), void 0);
1729
    assert.equal(c2.modelId(c2.at(0).attributes), void 0);
1730
    var m = new M({'_id': 2});
1731
    c2.add(m);
1732
    assert.equal(c2.get(2), void 0);
1733
    assert.equal(c2.modelId(m.attributes), void 0);
1734
  });
1735
1736
  QUnit.test('#3039 #3951: adding at index fires with correct at', function(assert) {
1737
    assert.expect(4);
1738
    var collection = new Backbone.Collection([{val: 0}, {val: 4}]);
1739
    collection.on('add', function(model, coll, options) {
1740
      assert.equal(model.get('val'), options.index);
1741
    });
1742
    collection.add([{val: 1}, {val: 2}, {val: 3}], {at: 1});
1743
    collection.add({val: 5}, {at: 10});
1744
  });
1745
1746
  QUnit.test('#3039: index is not sent when at is not specified', function(assert) {
1747
    assert.expect(2);
1748
    var collection = new Backbone.Collection([{at: 0}]);
1749
    collection.on('add', function(model, coll, options) {
1750
      assert.equal(undefined, options.index);
1751
    });
1752
    collection.add([{at: 1}, {at: 2}]);
1753
  });
1754
1755
  QUnit.test('#3199 - Order changing should trigger a sort', function(assert) {
1756
    assert.expect(1);
1757
    var one = new Backbone.Model({id: 1});
1758
    var two = new Backbone.Model({id: 2});
1759
    var three = new Backbone.Model({id: 3});
1760
    var collection = new Backbone.Collection([one, two, three]);
1761
    collection.on('sort', function() {
1762
      assert.ok(true);
1763
    });
1764
    collection.set([{id: 3}, {id: 2}, {id: 1}]);
1765
  });
1766
1767
  QUnit.test('#3199 - Adding a model should trigger a sort', function(assert) {
1768
    assert.expect(1);
1769
    var one = new Backbone.Model({id: 1});
1770
    var two = new Backbone.Model({id: 2});
1771
    var three = new Backbone.Model({id: 3});
1772
    var collection = new Backbone.Collection([one, two, three]);
1773
    collection.on('sort', function() {
1774
      assert.ok(true);
1775
    });
1776
    collection.set([{id: 1}, {id: 2}, {id: 3}, {id: 0}]);
1777
  });
1778
1779
  QUnit.test('#3199 - Order not changing should not trigger a sort', function(assert) {
1780
    assert.expect(0);
1781
    var one = new Backbone.Model({id: 1});
1782
    var two = new Backbone.Model({id: 2});
1783
    var three = new Backbone.Model({id: 3});
1784
    var collection = new Backbone.Collection([one, two, three]);
1785
    collection.on('sort', function() {
1786
      assert.ok(false);
1787
    });
1788
    collection.set([{id: 1}, {id: 2}, {id: 3}]);
1789
  });
1790
1791
  QUnit.test('add supports negative indexes', function(assert) {
1792
    assert.expect(1);
1793
    var collection = new Backbone.Collection([{id: 1}]);
1794
    collection.add([{id: 2}, {id: 3}], {at: -1});
1795
    collection.add([{id: 2.5}], {at: -2});
1796
    collection.add([{id: 0.5}], {at: -6});
1797
    assert.equal(collection.pluck('id').join(','), '0.5,1,2,2.5,3');
1798
  });
1799
1800
  QUnit.test('#set accepts options.at as a string', function(assert) {
1801
    assert.expect(1);
1802
    var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
1803
    collection.add([{id: 3}], {at: '1'});
1804
    assert.deepEqual(collection.pluck('id'), [1, 3, 2]);
1805
  });
1806
1807
  QUnit.test('adding multiple models triggers `update` event once', function(assert) {
1808
    assert.expect(1);
1809
    var collection = new Backbone.Collection;
1810
    collection.on('update', function() { assert.ok(true); });
1811
    collection.add([{id: 1}, {id: 2}, {id: 3}]);
1812
  });
1813
1814
  QUnit.test('removing models triggers `update` event once', function(assert) {
1815
    assert.expect(1);
1816
    var collection = new Backbone.Collection([{id: 1}, {id: 2}, {id: 3}]);
1817
    collection.on('update', function() { assert.ok(true); });
1818
    collection.remove([{id: 1}, {id: 2}]);
1819
  });
1820
1821
  QUnit.test('remove does not trigger `update` when nothing removed', function(assert) {
1822
    assert.expect(0);
1823
    var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
1824
    collection.on('update', function() { assert.ok(false); });
1825
    collection.remove([{id: 3}]);
1826
  });
1827
1828
  QUnit.test('set triggers `set` event once', function(assert) {
1829
    assert.expect(1);
1830
    var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
1831
    collection.on('update', function() { assert.ok(true); });
1832
    collection.set([{id: 1}, {id: 3}]);
1833
  });
1834
1835
  QUnit.test('set does not trigger `update` event when nothing added nor removed', function(assert) {
1836
    var collection = new Backbone.Collection([{id: 1}, {id: 2}]);
1837
    collection.on('update', function(coll, options) {
1838
      assert.equal(options.changes.added.length, 0);
1839
      assert.equal(options.changes.removed.length, 0);
1840
      assert.equal(options.changes.merged.length, 2);
1841
    });
1842
    collection.set([{id: 1}, {id: 2}]);
1843
  });
1844
1845
  QUnit.test('#3610 - invoke collects arguments', function(assert) {
1846
    assert.expect(3);
1847
    var Model = Backbone.Model.extend({
1848
      method: function(x, y, z) {
1849
        assert.equal(x, 1);
1850
        assert.equal(y, 2);
1851
        assert.equal(z, 3);
1852
      }
1853
    });
1854
    var Collection = Backbone.Collection.extend({
1855
      model: Model
1856
    });
1857
    var collection = new Collection([{id: 1}]);
1858
    collection.invoke('method', 1, 2, 3);
1859
  });
1860
1861
  QUnit.test('#3662 - triggering change without model will not error', function(assert) {
1862
    assert.expect(1);
1863
    var collection = new Backbone.Collection([{id: 1}]);
1864
    var model = collection.first();
1865
    collection.on('change', function(m) {
1866
      assert.equal(m, undefined);
1867
    });
1868
    model.trigger('change');
1869
  });
1870
1871
  QUnit.test('#3871 - falsy parse result creates empty collection', function(assert) {
1872
    var collection = new (Backbone.Collection.extend({
1873
      parse: function(data, options) {}
1874
    }));
1875
    collection.set('', {parse: true});
1876
    assert.equal(collection.length, 0);
1877
  });
1878
1879
  QUnit.test("#3711 - remove's `update` event returns one removed model", function(assert) {
1880
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1881
    var collection = new Backbone.Collection([model]);
1882
    collection.on('update', function(context, options) {
1883
      var changed = options.changes;
1884
      assert.deepEqual(changed.added, []);
1885
      assert.deepEqual(changed.merged, []);
1886
      assert.strictEqual(changed.removed[0], model);
1887
    });
1888
    collection.remove(model);
1889
  });
1890
1891
  QUnit.test("#3711 - remove's `update` event returns multiple removed models", function(assert) {
1892
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1893
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1894
    var collection = new Backbone.Collection([model, model2]);
1895
    collection.on('update', function(context, options) {
1896
      var changed = options.changes;
1897
      assert.deepEqual(changed.added, []);
1898
      assert.deepEqual(changed.merged, []);
1899
      assert.ok(changed.removed.length === 2);
1900
1901
      assert.ok(_.indexOf(changed.removed, model) > -1 && _.indexOf(changed.removed, model2) > -1);
1902
    });
1903
    collection.remove([model, model2]);
1904
  });
1905
1906
  QUnit.test("#3711 - set's `update` event returns one added model", function(assert) {
1907
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1908
    var collection = new Backbone.Collection();
1909
    collection.on('update', function(context, options) {
1910
      var addedModels = options.changes.added;
1911
      assert.ok(addedModels.length === 1);
1912
      assert.strictEqual(addedModels[0], model);
1913
    });
1914
    collection.set(model);
1915
  });
1916
1917
  QUnit.test("#3711 - set's `update` event returns multiple added models", function(assert) {
1918
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1919
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1920
    var collection = new Backbone.Collection();
1921
    collection.on('update', function(context, options) {
1922
      var addedModels = options.changes.added;
1923
      assert.ok(addedModels.length === 2);
1924
      assert.strictEqual(addedModels[0], model);
1925
      assert.strictEqual(addedModels[1], model2);
1926
    });
1927
    collection.set([model, model2]);
1928
  });
1929
1930
  QUnit.test("#3711 - set's `update` event returns one removed model", function(assert) {
1931
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1932
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1933
    var model3 = new Backbone.Model({id: 3, title: 'My Last Post'});
1934
    var collection = new Backbone.Collection([model]);
1935
    collection.on('update', function(context, options) {
1936
      var changed = options.changes;
1937
      assert.equal(changed.added.length, 2);
1938
      assert.equal(changed.merged.length, 0);
1939
      assert.ok(changed.removed.length === 1);
1940
      assert.strictEqual(changed.removed[0], model);
1941
    });
1942
    collection.set([model2, model3]);
1943
  });
1944
1945
  QUnit.test("#3711 - set's `update` event returns multiple removed models", function(assert) {
1946
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1947
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1948
    var model3 = new Backbone.Model({id: 3, title: 'My Last Post'});
1949
    var collection = new Backbone.Collection([model, model2]);
1950
    collection.on('update', function(context, options) {
1951
      var removedModels = options.changes.removed;
1952
      assert.ok(removedModels.length === 2);
1953
      assert.strictEqual(removedModels[0], model);
1954
      assert.strictEqual(removedModels[1], model2);
1955
    });
1956
    collection.set([model3]);
1957
  });
1958
1959
  QUnit.test("#3711 - set's `update` event returns one merged model", function(assert) {
1960
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1961
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1962
    var model2Update = new Backbone.Model({id: 2, title: 'Second Post V2'});
1963
    var collection = new Backbone.Collection([model, model2]);
1964
    collection.on('update', function(context, options) {
1965
      var mergedModels = options.changes.merged;
1966
      assert.ok(mergedModels.length === 1);
1967
      assert.strictEqual(mergedModels[0].get('title'), model2Update.get('title'));
1968
    });
1969
    collection.set([model2Update]);
1970
  });
1971
1972
  QUnit.test("#3711 - set's `update` event returns multiple merged models", function(assert) {
1973
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1974
    var modelUpdate = new Backbone.Model({id: 1, title: 'First Post V2'});
1975
    var model2 = new Backbone.Model({id: 2, title: 'Second Post'});
1976
    var model2Update = new Backbone.Model({id: 2, title: 'Second Post V2'});
1977
    var collection = new Backbone.Collection([model, model2]);
1978
    collection.on('update', function(context, options) {
1979
      var mergedModels = options.changes.merged;
1980
      assert.ok(mergedModels.length === 2);
1981
      assert.strictEqual(mergedModels[0].get('title'), model2Update.get('title'));
1982
      assert.strictEqual(mergedModels[1].get('title'), modelUpdate.get('title'));
1983
    });
1984
    collection.set([model2Update, modelUpdate]);
1985
  });
1986
1987
  QUnit.test("#3711 - set's `update` event should not be triggered adding a model which already exists exactly alike", function(assert) {
1988
    var fired = false;
1989
    var model = new Backbone.Model({id: 1, title: 'First Post'});
1990
    var collection = new Backbone.Collection([model]);
1991
    collection.on('update', function(context, options) {
1992
      fired = true;
1993
    });
1994
    collection.set([model]);
1995
    assert.equal(fired, false);
1996
  });
1997
1998
})();
1999