/
CollectionTest.php
2755 lines (2511 loc) · 79.9 KB
/
CollectionTest.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/**
* CakePHP(tm) : Rapid Development Framework (https://cakephp.org)
* Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
*
* Licensed under The MIT License
* For full copyright and license information, please see the LICENSE.txt
* Redistributions of files must retain the above copyright notice.
*
* @copyright Copyright (c) Cake Software Foundation, Inc. (https://cakefoundation.org)
* @link https://cakephp.org CakePHP(tm) Project
* @since 3.0.0
* @license https://opensource.org/licenses/mit-license.php MIT License
*/
namespace Cake\Test\TestCase\Collection;
use ArrayIterator;
use ArrayObject;
use Cake\Collection\Collection;
use Cake\Collection\CollectionInterface;
use Cake\Collection\CollectionTrait;
use Cake\TestSuite\TestCase;
use NoRewindIterator;
class TestCollection extends \IteratorIterator implements CollectionInterface
{
use CollectionTrait;
public function __construct($items)
{
if (is_array($items)) {
$items = new \ArrayIterator($items);
}
if (!($items instanceof \Traversable)) {
$msg = 'Only an array or \Traversable is allowed for Collection';
throw new \InvalidArgumentException($msg);
}
parent::__construct($items);
}
}
/**
* Special class to test that extending \ArrayIterator works as expected
*/
class TestIterator extends ArrayIterator
{
use CollectionTrait;
public $data = [];
public function __construct($data)
{
$this->data = $data;
parent::__construct($data);
}
public function checkValues()
{
return true;
}
}
class CountableIterator extends \IteratorIterator implements \Countable
{
public function __construct($items)
{
$f = function () use ($items) {
foreach ($items as $e) {
yield $e;
}
};
parent::__construct($f());
}
public function count()
{
return 6;
}
}
/**
* Collection Test
*
* @coversDefaultClass \Cake\Collection\Collection
*/
class CollectionTest extends TestCase
{
/**
* Tests that it is possible to convert an array into a collection
*
* @return void
*/
public function testArrayIsWrapped()
{
$items = [1, 2, 3];
$collection = new Collection($items);
$this->assertEquals($items, iterator_to_array($collection));
}
/**
* Provider for average tests
*
* @return array
*/
public function avgProvider()
{
$items = [1, 2, 3];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests the avg method
*
* @dataProvider avgProvider
* @return void
*/
public function testAvg($items)
{
$collection = new Collection($items);
$this->assertEquals(2, $collection->avg());
$items = [['foo' => 1], ['foo' => 2], ['foo' => 3]];
$collection = new Collection($items);
$this->assertEquals(2, $collection->avg('foo'));
}
/**
* Tests the avg method when on an empty collection
*
* @return void
*/
public function testAvgWithEmptyCollection()
{
$collection = new Collection([]);
$this->assertNull($collection->avg());
}
/**
* Provider for average tests with use of a matcher
*
* @return array
*/
public function avgWithMatcherProvider()
{
$items = [['foo' => 1], ['foo' => 2], ['foo' => 3]];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* ests the avg method
*
* @dataProvider avgWithMatcherProvider
* @return void
*/
public function testAvgWithMatcher($items)
{
$collection = new Collection($items);
$this->assertEquals(2, $collection->avg('foo'));
}
/**
* Provider for some median tests
*
* @return array
*/
public function medianProvider()
{
$items = [5, 2, 4];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests the median method
*
* @dataProvider medianProvider
* @return void
*/
public function testMedian($items)
{
$collection = new Collection($items);
$this->assertEquals(4, $collection->median());
}
/**
* Tests the median method when on an empty collection
*
* @return void
*/
public function testMedianWithEmptyCollection()
{
$collection = new Collection([]);
$this->assertNull($collection->median());
}
/**
* Tests the median method
*
* @dataProvider simpleProvider
* @return void
*/
public function testMedianEven($items)
{
$collection = new Collection($items);
$this->assertEquals(2.5, $collection->median());
}
/**
* Provider for median tests with use of a matcher
*
* @return array
*/
public function medianWithMatcherProvider()
{
$items = [
['invoice' => ['total' => 400]],
['invoice' => ['total' => 500]],
['invoice' => ['total' => 200]],
['invoice' => ['total' => 100]],
['invoice' => ['total' => 333]]
];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests the median method
*
* @dataProvider medianWithMatcherProvider
* @return void
*/
public function testMedianWithMatcher($items)
{
$this->assertEquals(333, (new Collection($items))->median('invoice.total'));
}
/**
* Tests that it is possible to convert an iterator into a collection
*
* @return void
*/
public function testIteratorIsWrapped()
{
$items = new \ArrayObject([1, 2, 3]);
$collection = new Collection($items);
$this->assertEquals(iterator_to_array($items), iterator_to_array($collection));
}
/**
* Test running a method over all elements in the collection
*
* @return void
*/
public function testEach()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 'a');
$callable->expects($this->at(1))
->method('__invoke')
->with(2, 'b');
$callable->expects($this->at(2))
->method('__invoke')
->with(3, 'c');
$collection->each($callable);
}
public function filterProvider()
{
$items = [1, 2, 0, 3, false, 4, null, 5, ''];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Test filter() with no callback.
*
* @dataProvider filterProvider
* @return void
*/
public function testFilterNoCallback($items)
{
$collection = new Collection($items);
$result = $collection->filter()->toArray();
$expected = [1, 2, 3, 4, 5];
$this->assertEquals($expected, array_values($result));
}
/**
* Tests that it is possible to chain filter() as it returns a collection object
*
* @return void
*/
public function testFilterChaining()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->once())
->method('__invoke')
->with(3, 'c');
$filtered = $collection->filter(function ($value, $key, $iterator) {
return $value > 2;
});
$this->assertInstanceOf('Cake\Collection\Collection', $filtered);
$filtered->each($callable);
}
/**
* Tests reject
*
* @return void
*/
public function testReject()
{
$collection = new Collection([]);
$result = $collection->reject(function ($v) {
return false;
});
$this->assertSame([], iterator_to_array($result));
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$result = $collection->reject(function ($v, $k, $items) use ($collection) {
$this->assertSame($collection->getInnerIterator(), $items);
return $v > 2;
});
$this->assertEquals(['a' => 1, 'b' => 2], iterator_to_array($result));
$this->assertInstanceOf('Cake\Collection\Collection', $result);
}
/**
* Tests every when the callback returns true for all elements
*
* @return void
*/
public function testEveryReturnTrue()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 'a')
->will($this->returnValue(true));
$callable->expects($this->at(1))
->method('__invoke')
->with(2, 'b')
->will($this->returnValue(true));
$callable->expects($this->at(2))
->method('__invoke')
->with(3, 'c')
->will($this->returnValue(true));
$this->assertTrue($collection->every($callable));
}
/**
* Tests every when the callback returns false for one of the elements
*
* @return void
*/
public function testEveryReturnFalse()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 'a')
->will($this->returnValue(true));
$callable->expects($this->at(1))
->method('__invoke')
->with(2, 'b')
->will($this->returnValue(false));
$callable->expects($this->exactly(2))->method('__invoke');
$this->assertFalse($collection->every($callable));
$items = [];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->never())
->method('__invoke');
$this->assertTrue($collection->every($callable));
}
/**
* Tests some() when one of the calls return true
*
* @return void
*/
public function testSomeReturnTrue()
{
$collection = new Collection([]);
$result = $collection->some(function ($v) {
return true;
});
$this->assertFalse($result);
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 'a')
->will($this->returnValue(false));
$callable->expects($this->at(1))
->method('__invoke')
->with(2, 'b')
->will($this->returnValue(true));
$callable->expects($this->exactly(2))->method('__invoke');
$this->assertTrue($collection->some($callable));
}
/**
* Tests some() when none of the calls return true
*
* @return void
*/
public function testSomeReturnFalse()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 'a')
->will($this->returnValue(false));
$callable->expects($this->at(1))
->method('__invoke')
->with(2, 'b')
->will($this->returnValue(false));
$callable->expects($this->at(2))
->method('__invoke')
->with(3, 'c')
->will($this->returnValue(false));
$this->assertFalse($collection->some($callable));
}
/**
* Tests contains
*
* @return void
*/
public function testContains()
{
$collection = new Collection([]);
$this->assertFalse($collection->contains('a'));
$items = ['a' => 1, 'b' => 2, 'c' => 3];
$collection = new Collection($items);
$this->assertTrue($collection->contains(2));
$this->assertTrue($collection->contains(1));
$this->assertFalse($collection->contains(10));
$this->assertFalse($collection->contains('2'));
}
/**
* Provider for some simple tests
*
* @return array
*/
public function simpleProvider()
{
$items = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests map
*
* @dataProvider simpleProvider
* @return void
*/
public function testMap($items)
{
$collection = new Collection($items);
$map = $collection->map(function ($v, $k, $it) use ($collection) {
$this->assertSame($collection->getInnerIterator(), $it);
return $v * $v;
});
$this->assertInstanceOf('Cake\Collection\Iterator\ReplaceIterator', $map);
$this->assertEquals(['a' => 1, 'b' => 4, 'c' => 9, 'd' => 16], iterator_to_array($map));
}
/**
* Tests reduce with initial value
*
* @dataProvider simpleProvider
* @return void
*/
public function testReduceWithInitialValue($items)
{
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(10, 1, 'a')
->will($this->returnValue(11));
$callable->expects($this->at(1))
->method('__invoke')
->with(11, 2, 'b')
->will($this->returnValue(13));
$callable->expects($this->at(2))
->method('__invoke')
->with(13, 3, 'c')
->will($this->returnValue(16));
$callable->expects($this->at(3))
->method('__invoke')
->with(16, 4, 'd')
->will($this->returnValue(20));
$this->assertEquals(20, $collection->reduce($callable, 10));
}
/**
* Tests reduce without initial value
*
* @dataProvider simpleProvider
* @return void
*/
public function testReduceWithoutInitialValue($items)
{
$collection = new Collection($items);
$callable = $this->getMockBuilder(\StdClass::class)
->setMethods(['__invoke'])
->getMock();
$callable->expects($this->at(0))
->method('__invoke')
->with(1, 2, 'b')
->will($this->returnValue(3));
$callable->expects($this->at(1))
->method('__invoke')
->with(3, 3, 'c')
->will($this->returnValue(6));
$callable->expects($this->at(2))
->method('__invoke')
->with(6, 4, 'd')
->will($this->returnValue(10));
$this->assertEquals(10, $collection->reduce($callable));
}
/**
* Provider for some extract tests
*
* @return array
*/
public function extractProvider()
{
$items = [['a' => ['b' => ['c' => 1]]], 2];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests extract
*
* @dataProvider extractProvider
* @return void
*/
public function testExtract($items)
{
$collection = new Collection($items);
$map = $collection->extract('a.b.c');
$this->assertInstanceOf('Cake\Collection\Iterator\ExtractIterator', $map);
$this->assertEquals([1, null], iterator_to_array($map));
}
/**
* Provider for some sort tests
*
* @return array
*/
public function sortProvider()
{
$items = [
['a' => ['b' => ['c' => 4]]],
['a' => ['b' => ['c' => 10]]],
['a' => ['b' => ['c' => 6]]]
];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests sort
*
* @dataProvider sortProvider
* @return void
*/
public function testSortString($items)
{
$collection = new Collection($items);
$map = $collection->sortBy('a.b.c');
$this->assertInstanceOf('Cake\Collection\Collection', $map);
$expected = [
['a' => ['b' => ['c' => 10]]],
['a' => ['b' => ['c' => 6]]],
['a' => ['b' => ['c' => 4]]],
];
$this->assertEquals($expected, $map->toList());
}
/**
* Tests max
*
* @dataProvider sortProvider
* @return void
*/
public function testMax($items)
{
$collection = new Collection($items);
$this->assertEquals(['a' => ['b' => ['c' => 10]]], $collection->max('a.b.c'));
}
/**
* Tests max
*
* @dataProvider sortProvider
* @return void
*/
public function testMaxCallback($items)
{
$collection = new Collection($items);
$callback = function ($e) {
return $e['a']['b']['c'] * - 1;
};
$this->assertEquals(['a' => ['b' => ['c' => 4]]], $collection->max($callback));
}
/**
* Tests max
*
* @dataProvider sortProvider
* @return void
*/
public function testMaxCallable($items)
{
$collection = new Collection($items);
$callback = function ($e) {
return $e['a']['b']['c'] * - 1;
};
$this->assertEquals(['a' => ['b' => ['c' => 4]]], $collection->max($callback));
}
/**
* Tests min
*
* @dataProvider sortProvider
* @return void
*/
public function testMin($items)
{
$collection = new Collection($items);
$this->assertEquals(['a' => ['b' => ['c' => 4]]], $collection->min('a.b.c'));
}
/**
* Provider for some groupBy tests
*
* @return array
*/
public function groupByProvider()
{
$items = [
['id' => 1, 'name' => 'foo', 'parent_id' => 10],
['id' => 2, 'name' => 'bar', 'parent_id' => 11],
['id' => 3, 'name' => 'baz', 'parent_id' => 10],
];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests groupBy
*
* @dataProvider groupByProvider
* @return void
*/
public function testGroupBy($items)
{
$collection = new Collection($items);
$grouped = $collection->groupBy('parent_id');
$expected = [
10 => [
['id' => 1, 'name' => 'foo', 'parent_id' => 10],
['id' => 3, 'name' => 'baz', 'parent_id' => 10],
],
11 => [
['id' => 2, 'name' => 'bar', 'parent_id' => 11],
]
];
$this->assertEquals($expected, iterator_to_array($grouped));
$this->assertInstanceOf('Cake\Collection\Collection', $grouped);
}
/**
* Tests groupBy
*
* @dataProvider groupByProvider
* @return void
*/
public function testGroupByCallback($items)
{
$collection = new Collection($items);
$expected = [
10 => [
['id' => 1, 'name' => 'foo', 'parent_id' => 10],
['id' => 3, 'name' => 'baz', 'parent_id' => 10],
],
11 => [
['id' => 2, 'name' => 'bar', 'parent_id' => 11],
]
];
$grouped = $collection->groupBy(function ($element) {
return $element['parent_id'];
});
$this->assertEquals($expected, iterator_to_array($grouped));
}
/**
* Tests grouping by a deep key
*
* @return void
*/
public function testGroupByDeepKey()
{
$items = [
['id' => 1, 'name' => 'foo', 'thing' => ['parent_id' => 10]],
['id' => 2, 'name' => 'bar', 'thing' => ['parent_id' => 11]],
['id' => 3, 'name' => 'baz', 'thing' => ['parent_id' => 10]],
];
$collection = new Collection($items);
$grouped = $collection->groupBy('thing.parent_id');
$expected = [
10 => [
['id' => 1, 'name' => 'foo', 'thing' => ['parent_id' => 10]],
['id' => 3, 'name' => 'baz', 'thing' => ['parent_id' => 10]],
],
11 => [
['id' => 2, 'name' => 'bar', 'thing' => ['parent_id' => 11]],
]
];
$this->assertEquals($expected, iterator_to_array($grouped));
}
/**
* Provider for some indexBy tests
*
* @return array
*/
public function indexByProvider()
{
$items = [
['id' => 1, 'name' => 'foo', 'parent_id' => 10],
['id' => 2, 'name' => 'bar', 'parent_id' => 11],
['id' => 3, 'name' => 'baz', 'parent_id' => 10],
];
return [
'array' => [$items],
'iterator' => [$this->yieldItems($items)]
];
}
/**
* Tests indexBy
*
* @dataProvider indexByProvider
* @return void
*/
public function testIndexBy($items)
{
$collection = new Collection($items);
$grouped = $collection->indexBy('id');
$expected = [
1 => ['id' => 1, 'name' => 'foo', 'parent_id' => 10],
3 => ['id' => 3, 'name' => 'baz', 'parent_id' => 10],
2 => ['id' => 2, 'name' => 'bar', 'parent_id' => 11],
];
$this->assertEquals($expected, iterator_to_array($grouped));
$this->assertInstanceOf('Cake\Collection\Collection', $grouped);
}
/**
* Tests indexBy
*
* @dataProvider indexByProvider
* @return void
*/
public function testIndexByCallback($items)
{
$collection = new Collection($items);
$grouped = $collection->indexBy(function ($element) {
return $element['id'];
});
$expected = [
1 => ['id' => 1, 'name' => 'foo', 'parent_id' => 10],
3 => ['id' => 3, 'name' => 'baz', 'parent_id' => 10],
2 => ['id' => 2, 'name' => 'bar', 'parent_id' => 11],
];
$this->assertEquals($expected, iterator_to_array($grouped));
}
/**
* Tests indexBy with a deep property
*
* @return void
*/
public function testIndexByDeep()
{
$items = [
['id' => 1, 'name' => 'foo', 'thing' => ['parent_id' => 10]],
['id' => 2, 'name' => 'bar', 'thing' => ['parent_id' => 11]],
['id' => 3, 'name' => 'baz', 'thing' => ['parent_id' => 10]],
];
$collection = new Collection($items);
$grouped = $collection->indexBy('thing.parent_id');
$expected = [
10 => ['id' => 3, 'name' => 'baz', 'thing' => ['parent_id' => 10]],
11 => ['id' => 2, 'name' => 'bar', 'thing' => ['parent_id' => 11]],
];
$this->assertEquals($expected, iterator_to_array($grouped));
}
/**
* Tests countBy
*
* @dataProvider groupByProvider
* @return void
*/
public function testCountBy($items)
{
$collection = new Collection($items);
$grouped = $collection->countBy('parent_id');
$expected = [
10 => 2,
11 => 1
];
$result = iterator_to_array($grouped);
$this->assertInstanceOf('Cake\Collection\Collection', $grouped);
$this->assertEquals($expected, $result);
}
/**
* Tests countBy
*
* @dataProvider groupByProvider
* @return void
*/
public function testCountByCallback($items)
{
$expected = [
10 => 2,
11 => 1
];
$collection = new Collection($items);
$grouped = $collection->countBy(function ($element) {
return $element['parent_id'];
});
$this->assertEquals($expected, iterator_to_array($grouped));
}
/**
* Tests shuffle
*
* @dataProvider simpleProvider
* @return void
*/
public function testShuffle($data)
{
$collection = (new Collection($data))->shuffle();
$result = $collection->toArray();
$this->assertCount(4, $result);
$this->assertContains(1, $result);
$this->assertContains(2, $result);
$this->assertContains(3, $result);
$this->assertContains(4, $result);
}
/**
* Tests sample
*
* @dataProvider simpleProvider
* @return void
*/
public function testSample($data)
{
$result = (new Collection($data))->sample(2)->toArray();
$this->assertCount(2, $result);
foreach ($result as $number) {
$this->assertContains($number, [1, 2, 3, 4]);
}
}
/**
* Tests the sample() method with a traversable non-iterator
*
* @return void
*/
public function testSampleWithTraversableNonIterator()
{
$collection = new Collection($this->datePeriod('2017-01-01', '2017-01-07'));
$result = $collection->sample(3)->toList();
$list = [
'2017-01-01',
'2017-01-02',
'2017-01-03',
'2017-01-04',
'2017-01-05',
'2017-01-06',
];
$this->assertCount(3, $result);
foreach ($result as $date) {
$this->assertContains($date->format('Y-m-d'), $list);
}
}
/**
* Test toArray method
*
* @return void
*/
public function testToArray()
{
$data = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4];
$collection = new Collection($data);
$this->assertEquals($data, $collection->toArray());
}
/**
* Test toList method
*
* @dataProvider simpleProvider
* @return void
*/
public function testToList($data)
{