forked from automerge/automerge-classic
-
Notifications
You must be signed in to change notification settings - Fork 0
/
test.js
1326 lines (1198 loc) · 60.3 KB
/
test.js
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
const assert = require('assert')
const Automerge = process.env.TEST_DIST === '1' ? require('../dist/automerge') : require('../src/automerge')
const { assertEqualsOneOf } = require('./helpers')
const { decodeChange } = require('../backend/columnar')
const UUID_PATTERN = /^[0-9a-f]{32}$/
const OPID_PATTERN = /^[0-9]+@[0-9a-f]{32}$/
describe('Automerge', () => {
describe('initialization ', () => {
it('should initially be an empty map', () => {
const doc = Automerge.init()
assert.deepStrictEqual(doc, {})
})
it('should allow instantiating from an existing object', () => {
const initialState = { birds: { wrens: 3, magpies: 4 } }
const doc = Automerge.from(initialState)
assert.deepStrictEqual(doc, initialState)
})
it('should allow merging of an object initialized with `from`', () => {
let doc1 = Automerge.from({ cards: [] })
let doc2 = Automerge.merge(Automerge.init(), doc1)
assert.deepStrictEqual(doc2, { cards: [] })
})
it('should allow passing an actorId when instantiating from an existing object', () => {
const actorId = '1234'
let doc = Automerge.from({ foo: 1 }, actorId)
assert.strictEqual(Automerge.getActorId(doc), '1234')
})
it('accepts an empty object as initial state', () => {
const doc = Automerge.from({})
assert.deepStrictEqual(doc, {})
})
it('accepts an array as initial state, but converts it to an object', () => {
const doc = Automerge.from(['a', 'b', 'c'])
assert.deepStrictEqual(doc, { '0': 'a', '1': 'b', '2': 'c' })
})
it('accepts strings as initial values, but treats them as an array of characters', () => {
const doc = Automerge.from('abc')
assert.deepStrictEqual(doc, { '0': 'a', '1': 'b', '2': 'c' })
})
it('ignores numbers provided as initial values', () => {
const doc = Automerge.from(123)
assert.deepStrictEqual(doc, {})
})
it('ignores booleans provided as initial values', () => {
const doc1 = Automerge.from(false)
assert.deepStrictEqual(doc1, {})
const doc2 = Automerge.from(true)
assert.deepStrictEqual(doc2, {})
})
})
describe('sequential use', () => {
let s1, s2
beforeEach(() => {
s1 = Automerge.init()
})
it('should not mutate objects', () => {
s2 = Automerge.change(s1, doc => doc.foo = 'bar')
assert.strictEqual(s1.foo, undefined)
assert.strictEqual(s2.foo, 'bar')
})
it('changes should be retrievable', () => {
const change1 = Automerge.getLastLocalChange(s1)
s2 = Automerge.change(s1, doc => doc.foo = 'bar')
const change2 = Automerge.getLastLocalChange(s2)
assert.strictEqual(change1, null)
const change = decodeChange(change2)
assert.deepStrictEqual(change, {
actor: change.actor, deps: [], seq: 1, startOp: 1,
hash: change.hash, message: '', time: change.time,
ops: [{obj: '_root', key: 'foo', action: 'set', insert: false, value: 'bar', pred: []}]
})
})
it('should not register any conflicts on repeated assignment', () => {
assert.strictEqual(Automerge.getConflicts(s1, 'foo'), undefined)
s1 = Automerge.change(s1, 'change', doc => doc.foo = 'one')
assert.strictEqual(Automerge.getConflicts(s1, 'foo'), undefined)
s1 = Automerge.change(s1, 'change', doc => doc.foo = 'two')
assert.strictEqual(Automerge.getConflicts(s1, 'foo'), undefined)
})
describe('changes', () => {
it('should group several changes', () => {
s2 = Automerge.change(s1, 'change message', doc => {
doc.first = 'one'
assert.strictEqual(doc.first, 'one')
doc.second = 'two'
assert.deepStrictEqual(doc, {
first: 'one', second: 'two'
})
})
assert.deepStrictEqual(s1, {})
assert.deepStrictEqual(s2, {first: 'one', second: 'two'})
})
it('should freeze objects if desired', () => {
s1 = Automerge.init({freeze: true})
s2 = Automerge.change(s1, doc => doc.foo = 'bar')
try {
s2.foo = 'lemon'
} catch (e) {}
assert.strictEqual(s2.foo, 'bar')
let deleted = false
try {
deleted = delete s2['foo']
} catch (e) {}
assert.strictEqual(s2.foo, 'bar')
assert.strictEqual(deleted, false)
Automerge.change(s2, doc => {
try {
s2.foo = 'lemon'
} catch (e) {}
assert.strictEqual(s2.foo, 'bar')
})
assert.throws(() => { Object.assign(s2, {x: 4}) })
assert.strictEqual(s2.x, undefined)
})
it('should allow repeated reading and writing of values', () => {
s2 = Automerge.change(s1, 'change message', doc => {
doc.value = 'a'
assert.strictEqual(doc.value, 'a')
doc.value = 'b'
doc.value = 'c'
assert.strictEqual(doc.value, 'c')
})
assert.deepStrictEqual(s1, {})
assert.deepStrictEqual(s2, {value: 'c'})
})
it('should not record conflicts when writing the same field several times within one change', () => {
s1 = Automerge.change(s1, 'change message', doc => {
doc.value = 'a'
doc.value = 'b'
doc.value = 'c'
})
assert.strictEqual(s1.value, 'c')
assert.strictEqual(Automerge.getConflicts(s1, 'value'), undefined)
})
it('should return the unchanged state object if nothing changed', () => {
s2 = Automerge.change(s1, doc => {})
assert.strictEqual(s2, s1)
})
it('should ignore field updates that write the existing value', () => {
s1 = Automerge.change(s1, doc => doc.field = 123)
s2 = Automerge.change(s1, doc => doc.field = 123)
assert.strictEqual(s2, s1)
})
it('should not ignore field updates that resolve a conflict', () => {
s2 = Automerge.merge(Automerge.init(), s1)
s1 = Automerge.change(s1, doc => doc.field = 123)
s2 = Automerge.change(s2, doc => doc.field = 321)
s1 = Automerge.merge(s1, s2)
assert.strictEqual(Object.keys(Automerge.getConflicts(s1, 'field')).length, 2)
const resolved = Automerge.change(s1, doc => doc.field = s1.field)
assert.notStrictEqual(resolved, s1)
assert.deepStrictEqual(resolved, {field: s1.field})
assert.strictEqual(Automerge.getConflicts(resolved, 'field'), undefined)
})
it('should ignore list element updates that write the existing value', () => {
s1 = Automerge.change(s1, doc => doc.list = [123])
s2 = Automerge.change(s1, doc => doc.list[0] = 123)
assert.strictEqual(s2, s1)
})
it('should not ignore list element updates that resolve a conflict', () => {
s1 = Automerge.change(s1, doc => doc.list = [1])
s2 = Automerge.merge(Automerge.init(), s1)
s1 = Automerge.change(s1, doc => doc.list[0] = 123)
s2 = Automerge.change(s2, doc => doc.list[0] = 321)
s1 = Automerge.merge(s1, s2)
assert.deepStrictEqual(Automerge.getConflicts(s1.list, 0), {
[`3@${Automerge.getActorId(s1)}`]: 123,
[`3@${Automerge.getActorId(s2)}`]: 321
})
const resolved = Automerge.change(s1, doc => doc.list[0] = s1.list[0])
assert.deepStrictEqual(resolved, s1)
assert.notStrictEqual(resolved, s1)
assert.strictEqual(Automerge.getConflicts(resolved.list, 0), undefined)
})
it('should sanity-check arguments', () => {
s1 = Automerge.change(s1, doc => doc.nested = {})
assert.throws(() => { Automerge.change({}, doc => doc.foo = 'bar') }, /must be the document root/)
assert.throws(() => { Automerge.change(s1.nested, doc => doc.foo = 'bar') }, /must be the document root/)
})
it('should not allow nested change blocks', () => {
assert.throws(() => {
Automerge.change(s1, doc1 => {
Automerge.change(doc1, doc2 => {
doc2.foo = 'bar'
})
})
}, /Calls to Automerge.change cannot be nested/)
assert.throws(() => {
s1 = Automerge.change(s1, doc1 => {
s2 = Automerge.change(s1, doc2 => doc2.two = 2)
doc1.one = 1
})
}, /Attempting to use an outdated Automerge document/)
})
it('should not allow the same base document to be used for multiple changes', () => {
assert.throws(() => {
Automerge.change(s1, doc => doc.one = 1)
Automerge.change(s1, doc => doc.two = 2)
}, /Attempting to use an outdated Automerge document/)
})
it('should allow a document to be cloned', () => {
s1 = Automerge.change(s1, doc => doc.zero = 0)
s2 = Automerge.clone(s1)
s1 = Automerge.change(s1, doc => doc.one = 1)
s2 = Automerge.change(s2, doc => doc.two = 2)
assert.deepStrictEqual(s1, {zero: 0, one: 1})
assert.deepStrictEqual(s2, {zero: 0, two: 2})
Automerge.free(s1)
Automerge.free(s2)
})
it('should work with Object.assign merges', () => {
s1 = Automerge.change(s1, doc1 => {
doc1.stuff = {foo: 'bar', baz: 'blur'}
})
s1 = Automerge.change(s1, doc1 => {
doc1.stuff = Object.assign({}, doc1.stuff, {baz: 'updated!'})
})
assert.deepStrictEqual(s1, {stuff: {foo: 'bar', baz: 'updated!'}})
})
it('should support Date objects in maps', () => {
const now = new Date()
s1 = Automerge.change(s1, doc => doc.now = now)
let changes = Automerge.getAllChanges(s1)
s2 = Automerge.applyChanges(Automerge.init(), changes)
assert.strictEqual(s2.now instanceof Date, true)
assert.strictEqual(s2.now.getTime(), now.getTime())
})
it('should support Date objects in lists', () => {
const now = new Date()
s1 = Automerge.change(s1, doc => doc.list = [now])
let changes = Automerge.getAllChanges(s1)
s2 = Automerge.applyChanges(Automerge.init(), changes)
assert.strictEqual(s2.list[0] instanceof Date, true)
assert.strictEqual(s2.list[0].getTime(), now.getTime())
})
it('should call patchCallback if supplied', () => {
const callbacks = [], actor = Automerge.getActorId(s1)
const s2 = Automerge.change(s1, {
patchCallback: (patch, before, after, local) => callbacks.push({patch, before, after, local})
}, doc => {
doc.birds = ['Goldfinch']
})
assert.strictEqual(callbacks.length, 1)
assert.deepStrictEqual(callbacks[0].patch, {
actor, seq: 1, maxOp: 2, deps: [], clock: {[actor]: 1},
diffs: {objectId: '_root', type: 'map', props: {birds: {[`1@${actor}`]: {
objectId: `1@${actor}`, type: 'list',
edits: [{action: 'insert', index: 0, elemId: `2@${actor}`}],
props: {0: {[`2@${actor}`]: {value: 'Goldfinch'}}}
}}}}
})
assert.strictEqual(callbacks[0].before, s1)
assert.strictEqual(callbacks[0].after, s2)
assert.strictEqual(callbacks[0].local, true)
})
it('should call a patchCallback set up on document initialisation', () => {
const callbacks = []
s1 = Automerge.init({
patchCallback: (patch, before, after, local) => callbacks.push({patch, before, after, local})
})
const s2 = Automerge.change(s1, doc => doc.bird = 'Goldfinch')
const actor = Automerge.getActorId(s1)
assert.strictEqual(callbacks.length, 1)
assert.deepStrictEqual(callbacks[0].patch, {
actor, seq: 1, maxOp: 1, deps: [], clock: {[actor]: 1},
diffs: {objectId: '_root', type: 'map', props: {bird: {[`1@${actor}`]: {value: 'Goldfinch'}}}}
})
assert.strictEqual(callbacks[0].before, s1)
assert.strictEqual(callbacks[0].after, s2)
assert.strictEqual(callbacks[0].local, true)
})
})
describe('emptyChange()', () => {
it('should append an empty change to the history', () => {
s1 = Automerge.change(s1, 'first change', doc => doc.field = 123)
s2 = Automerge.emptyChange(s1, 'empty change')
assert.notStrictEqual(s2, s1)
assert.deepStrictEqual(s2, s1)
assert.deepStrictEqual(Automerge.getHistory(s2).map(state => state.change.message),
['first change', 'empty change'])
})
it('should reference dependencies', () => {
s1 = Automerge.change(s1, doc => doc.field = 123)
s2 = Automerge.merge(Automerge.init(), s1)
s2 = Automerge.change(s2, doc => doc.other = 'hello')
s1 = Automerge.emptyChange(Automerge.merge(s1, s2))
const history = Automerge.getHistory(s1)
const emptyChange = history[2].change
assert.deepStrictEqual(emptyChange.deps, [history[0].change.hash, history[1].change.hash].sort())
assert.deepStrictEqual(emptyChange.ops, [])
})
})
describe('root object', () => {
it('should handle single-property assignment', () => {
s1 = Automerge.change(s1, 'set bar', doc => doc.foo = 'bar')
s1 = Automerge.change(s1, 'set zap', doc => doc.zip = 'zap')
assert.strictEqual(s1.foo, 'bar')
assert.strictEqual(s1.zip, 'zap')
assert.deepStrictEqual(s1, {foo: 'bar', zip: 'zap'})
})
it('should allow floating-point values', () => {
s1 = Automerge.change(s1, doc => doc.number = 1589032171.1)
assert.strictEqual(s1.number, 1589032171.1)
})
it('should handle multi-property assignment', () => {
s1 = Automerge.change(s1, 'multi-assign', doc => {
Object.assign(doc, {foo: 'bar', answer: 42})
})
assert.strictEqual(s1.foo, 'bar')
assert.strictEqual(s1.answer, 42)
assert.deepStrictEqual(s1, {foo: 'bar', answer: 42})
})
it('should handle root property deletion', () => {
s1 = Automerge.change(s1, 'set foo', doc => { doc.foo = 'bar'; doc.something = null })
s1 = Automerge.change(s1, 'del foo', doc => { delete doc['foo'] })
assert.strictEqual(s1.foo, undefined)
assert.strictEqual(s1.something, null)
assert.deepStrictEqual(s1, {something: null})
})
it('should follow JS delete behavior', () => {
s1 = Automerge.change(s1, 'set foo', doc => { doc.foo = 'bar' })
let deleted
s1 = Automerge.change(s1, 'del foo', doc => {
deleted = delete doc['foo']
})
assert.strictEqual(deleted, true)
let deleted2
assert.doesNotThrow(() => {
s1 = Automerge.change(s1, 'del baz', doc => {
deleted2 = delete doc['baz']
})
})
assert.strictEqual(deleted2, true)
})
it('should allow the type of a property to be changed', () => {
s1 = Automerge.change(s1, 'set number', doc => doc.prop = 123)
assert.strictEqual(s1.prop, 123)
s1 = Automerge.change(s1, 'set string', doc => doc.prop = '123')
assert.strictEqual(s1.prop, '123')
s1 = Automerge.change(s1, 'set null', doc => doc.prop = null)
assert.strictEqual(s1.prop, null)
s1 = Automerge.change(s1, 'set bool', doc => doc.prop = true)
assert.strictEqual(s1.prop, true)
})
it('should require property names to be valid', () => {
assert.throws(() => {
Automerge.change(s1, 'foo', doc => doc[''] = 'x')
}, /must not be an empty string/)
})
it('should not allow assignment of unsupported datatypes', () => {
Automerge.change(s1, doc => {
assert.throws(() => { doc.foo = undefined }, /Unsupported type of value: undefined/)
assert.throws(() => { doc.foo = {prop: undefined} }, /Unsupported type of value: undefined/)
assert.throws(() => { doc.foo = () => {} }, /Unsupported type of value: function/)
assert.throws(() => { doc.foo = Symbol('foo') }, /Unsupported type of value: symbol/)
})
})
})
describe('nested maps', () => {
it('should assign an objectId to nested maps', () => {
s1 = Automerge.change(s1, doc => { doc.nested = {} })
assert.strictEqual(OPID_PATTERN.test(Automerge.getObjectId(s1.nested)), true)
assert.notEqual(Automerge.getObjectId(s1.nested), '_root')
})
it('should handle assignment of a nested property', () => {
s1 = Automerge.change(s1, 'first change', doc => {
doc.nested = {}
doc.nested.foo = 'bar'
})
s1 = Automerge.change(s1, 'second change', doc => {
doc.nested.one = 1
})
assert.deepStrictEqual(s1, {nested: {foo: 'bar', one: 1}})
assert.deepStrictEqual(s1.nested, {foo: 'bar', one: 1})
assert.strictEqual(s1.nested.foo, 'bar')
assert.strictEqual(s1.nested['foo'], 'bar')
assert.strictEqual(s1.nested.one, 1)
assert.strictEqual(s1.nested['one'], 1)
})
it('should handle assignment of an object literal', () => {
s1 = Automerge.change(s1, doc => {
doc.textStyle = {bold: false, fontSize: 12}
})
assert.deepStrictEqual(s1, {textStyle: {bold: false, fontSize: 12}})
assert.deepStrictEqual(s1.textStyle, {bold: false, fontSize: 12})
assert.strictEqual(s1.textStyle.bold, false)
assert.strictEqual(s1.textStyle.fontSize, 12)
})
it('should handle assignment of multiple nested properties', () => {
s1 = Automerge.change(s1, doc => {
doc['textStyle'] = {bold: false, fontSize: 12}
Object.assign(doc.textStyle, {typeface: 'Optima', fontSize: 14})
})
assert.strictEqual(s1.textStyle.typeface, 'Optima')
assert.strictEqual(s1.textStyle.bold, false)
assert.strictEqual(s1.textStyle.fontSize, 14)
assert.deepStrictEqual(s1.textStyle, {typeface: 'Optima', bold: false, fontSize: 14})
})
it('should handle arbitrary-depth nesting', () => {
s1 = Automerge.change(s1, doc => {
doc.a = {b: {c: {d: {e: {f: {g: 'h'}}}}}}
})
s1 = Automerge.change(s1, doc => {
doc.a.b.c.d.e.f.i = 'j'
})
assert.deepStrictEqual(s1, {a: { b: { c: { d: { e: { f: { g: 'h', i: 'j'}}}}}}})
assert.strictEqual(s1.a.b.c.d.e.f.g, 'h')
assert.strictEqual(s1.a.b.c.d.e.f.i, 'j')
})
it('should allow an old object to be replaced with a new one', () => {
s1 = Automerge.change(s1, 'change 1', doc => {
doc.myPet = {species: 'dog', legs: 4, breed: 'dachshund'}
})
s2 = Automerge.change(s1, 'change 2', doc => {
doc.myPet = {species: 'koi', variety: '紅白', colors: {red: true, white: true, black: false}}
})
assert.deepStrictEqual(s1.myPet, {
species: 'dog', legs: 4, breed: 'dachshund'
})
assert.strictEqual(s1.myPet.breed, 'dachshund')
assert.deepStrictEqual(s2.myPet, {
species: 'koi', variety: '紅白',
colors: {red: true, white: true, black: false}
})
assert.strictEqual(s2.myPet.breed, undefined)
assert.strictEqual(s2.myPet.variety, '紅白')
})
it('should allow fields to be changed between primitive and nested map', () => {
s1 = Automerge.change(s1, doc => doc.color = '#ff7f00')
assert.strictEqual(s1.color, '#ff7f00')
s1 = Automerge.change(s1, doc => doc.color = {red: 255, green: 127, blue: 0})
assert.deepStrictEqual(s1.color, {red: 255, green: 127, blue: 0})
s1 = Automerge.change(s1, doc => doc.color = '#ff7f00')
assert.strictEqual(s1.color, '#ff7f00')
})
it('should not allow several references to the same map object', () => {
s1 = Automerge.change(s1, doc => doc.object = {})
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = doc.object })
}, /Cannot create a reference to an existing document object/)
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = s1.object })
}, /Cannot create a reference to an existing document object/)
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = {}; doc.y = doc.x })
}, /Cannot create a reference to an existing document object/)
})
it('should handle deletion of properties within a map', () => {
s1 = Automerge.change(s1, 'set style', doc => {
doc.textStyle = {typeface: 'Optima', bold: false, fontSize: 12}
})
s1 = Automerge.change(s1, 'non-bold', doc => delete doc.textStyle['bold'])
assert.strictEqual(s1.textStyle.bold, undefined)
assert.deepStrictEqual(s1.textStyle, {typeface: 'Optima', fontSize: 12})
})
it('should handle deletion of references to a map', () => {
s1 = Automerge.change(s1, 'make rich text doc', doc => {
Object.assign(doc, {title: 'Hello', textStyle: {typeface: 'Optima', fontSize: 12}})
})
s1 = Automerge.change(s1, doc => delete doc['textStyle'])
assert.strictEqual(s1.textStyle, undefined)
assert.deepStrictEqual(s1, {title: 'Hello'})
})
it('should validate field names', () => {
s1 = Automerge.change(s1, doc => doc.nested = {})
assert.throws(() => { Automerge.change(s1, doc => doc.nested[''] = 'x') }, /must not be an empty string/)
assert.throws(() => { Automerge.change(s1, doc => doc.nested = {'': 'x'}) }, /must not be an empty string/)
})
})
describe('lists', () => {
it('should allow elements to be inserted', () => {
s1 = Automerge.change(s1, doc => doc.noodles = [])
s1 = Automerge.change(s1, doc => doc.noodles.insertAt(0, 'udon', 'soba'))
s1 = Automerge.change(s1, doc => doc.noodles.insertAt(1, 'ramen'))
assert.deepStrictEqual(s1, {noodles: ['udon', 'ramen', 'soba']})
assert.deepStrictEqual(s1.noodles, ['udon', 'ramen', 'soba'])
assert.strictEqual(s1.noodles[0], 'udon')
assert.strictEqual(s1.noodles[1], 'ramen')
assert.strictEqual(s1.noodles[2], 'soba')
assert.strictEqual(s1.noodles.length, 3)
})
it('should handle assignment of a list literal', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'ramen', 'soba'])
assert.deepStrictEqual(s1, {noodles: ['udon', 'ramen', 'soba']})
assert.deepStrictEqual(s1.noodles, ['udon', 'ramen', 'soba'])
assert.strictEqual(s1.noodles[0], 'udon')
assert.strictEqual(s1.noodles[1], 'ramen')
assert.strictEqual(s1.noodles[2], 'soba')
assert.strictEqual(s1.noodles[3], undefined)
assert.strictEqual(s1.noodles.length, 3)
})
it('should only allow numeric indexes', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'ramen', 'soba'])
s1 = Automerge.change(s1, doc => doc.noodles[1] = 'Ramen!')
assert.strictEqual(s1.noodles[1], 'Ramen!')
s1 = Automerge.change(s1, doc => doc.noodles['1'] = 'RAMEN!!!')
assert.strictEqual(s1.noodles[1], 'RAMEN!!!')
assert.throws(() => { Automerge.change(s1, doc => doc.noodles['favourite'] = 'udon') }, /list index must be a number/)
assert.throws(() => { Automerge.change(s1, doc => doc.noodles['' ] = 'udon') }, /list index must be a number/)
assert.throws(() => { Automerge.change(s1, doc => doc.noodles['1e6' ] = 'udon') }, /list index must be a number/)
})
it('should handle deletion of list elements', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'ramen', 'soba'])
s1 = Automerge.change(s1, doc => delete doc.noodles[1])
assert.deepStrictEqual(s1.noodles, ['udon', 'soba'])
s1 = Automerge.change(s1, doc => doc.noodles.deleteAt(1))
assert.deepStrictEqual(s1.noodles, ['udon'])
assert.strictEqual(s1.noodles[0], 'udon')
assert.strictEqual(s1.noodles[1], undefined)
assert.strictEqual(s1.noodles[2], undefined)
assert.strictEqual(s1.noodles.length, 1)
})
it('should handle assignment of individual list indexes', () => {
s1 = Automerge.change(s1, doc => doc.japaneseFood = ['udon', 'ramen', 'soba'])
s1 = Automerge.change(s1, doc => doc.japaneseFood[1] = 'sushi')
assert.deepStrictEqual(s1.japaneseFood, ['udon', 'sushi', 'soba'])
assert.strictEqual(s1.japaneseFood[0], 'udon')
assert.strictEqual(s1.japaneseFood[1], 'sushi')
assert.strictEqual(s1.japaneseFood[2], 'soba')
assert.strictEqual(s1.japaneseFood[3], undefined)
assert.strictEqual(s1.japaneseFood.length, 3)
})
it('should treat out-by-one assignment as insertion', () => {
s1 = Automerge.change(s1, doc => doc.japaneseFood = ['udon'])
s1 = Automerge.change(s1, doc => doc.japaneseFood[1] = 'sushi')
assert.deepStrictEqual(s1.japaneseFood, ['udon', 'sushi'])
assert.strictEqual(s1.japaneseFood[0], 'udon')
assert.strictEqual(s1.japaneseFood[1], 'sushi')
assert.strictEqual(s1.japaneseFood[2], undefined)
assert.strictEqual(s1.japaneseFood.length, 2)
})
it('should not allow out-of-range assignment', () => {
s1 = Automerge.change(s1, doc => doc.japaneseFood = ['udon'])
assert.throws(() => { Automerge.change(s1, doc => doc.japaneseFood[4] = 'ramen') }, /is out of bounds/)
})
it('should allow bulk assignment of multiple list indexes', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'ramen', 'soba'])
s1 = Automerge.change(s1, doc => Object.assign(doc.noodles, {0: 'うどん', 2: 'そば'}))
assert.deepStrictEqual(s1.noodles, ['うどん', 'ramen', 'そば'])
assert.strictEqual(s1.noodles[0], 'うどん')
assert.strictEqual(s1.noodles[1], 'ramen')
assert.strictEqual(s1.noodles[2], 'そば')
assert.strictEqual(s1.noodles.length, 3)
})
it('should handle nested objects', () => {
s1 = Automerge.change(s1, doc => doc.noodles = [{type: 'ramen', dishes: ['tonkotsu', 'shoyu']}])
s1 = Automerge.change(s1, doc => doc.noodles.push({type: 'udon', dishes: ['tempura udon']}))
s1 = Automerge.change(s1, doc => doc.noodles[0].dishes.push('miso'))
assert.deepStrictEqual(s1, {noodles: [
{type: 'ramen', dishes: ['tonkotsu', 'shoyu', 'miso']},
{type: 'udon', dishes: ['tempura udon']}
]})
assert.deepStrictEqual(s1.noodles[0], {
type: 'ramen', dishes: ['tonkotsu', 'shoyu', 'miso']
})
assert.deepStrictEqual(s1.noodles[1], {
type: 'udon', dishes: ['tempura udon']
})
})
it('should handle nested lists', () => {
s1 = Automerge.change(s1, doc => doc.noodleMatrix = [['ramen', 'tonkotsu', 'shoyu']])
s1 = Automerge.change(s1, doc => doc.noodleMatrix.push(['udon', 'tempura udon']))
s1 = Automerge.change(s1, doc => doc.noodleMatrix[0].push('miso'))
assert.deepStrictEqual(s1.noodleMatrix, [['ramen', 'tonkotsu', 'shoyu', 'miso'], ['udon', 'tempura udon']])
assert.deepStrictEqual(s1.noodleMatrix[0], ['ramen', 'tonkotsu', 'shoyu', 'miso'])
assert.deepStrictEqual(s1.noodleMatrix[1], ['udon', 'tempura udon'])
})
it('should handle deep nesting', () => {
s1 = Automerge.change(s1, doc => doc.nesting = {
maps: { m1: { m2: { foo: "bar", baz: {} }, m2a: { } } },
lists: [ [ 1,2,3 ] , [ [ 3,4,5,[6]], 7 ] ],
mapsinlists: [ { foo: "bar" } , [ { bar: "baz" } ] ],
listsinmaps: { foo: [1,2,3], bar: [ [ { baz: "123" } ] ] }
})
s1 = Automerge.change(s1, doc => {
doc.nesting.maps.m1a = "123"
doc.nesting.maps.m1.m2.baz.xxx = "123"
delete doc.nesting.maps.m1.m2a
doc.nesting.lists.shift()
doc.nesting.lists[0][0].pop()
doc.nesting.lists[0][0].push(100)
doc.nesting.mapsinlists[0].foo = "baz"
doc.nesting.mapsinlists[1][0].foo = "bar"
delete doc.nesting.mapsinlists[1]
doc.nesting.listsinmaps.foo.push(4)
doc.nesting.listsinmaps.bar[0][0].baz = "456"
delete doc.nesting.listsinmaps.bar
})
assert.deepStrictEqual(s1, { nesting: {
maps: { m1: { m2: { foo: "bar", baz: { xxx: "123" } } }, m1a: "123" },
lists: [ [ [ 3,4,5,100 ], 7 ] ],
mapsinlists: [ { foo: "baz" } ],
listsinmaps: { foo: [1,2,3,4] }
}})
})
it('should handle replacement of the entire list', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'soba', 'ramen'])
s1 = Automerge.change(s1, doc => doc.japaneseNoodles = doc.noodles.slice())
s1 = Automerge.change(s1, doc => doc.noodles = ['wonton', 'pho'])
assert.deepStrictEqual(s1, {
noodles: ['wonton', 'pho'],
japaneseNoodles: ['udon', 'soba', 'ramen']
})
assert.deepStrictEqual(s1.noodles, ['wonton', 'pho'])
assert.strictEqual(s1.noodles[0], 'wonton')
assert.strictEqual(s1.noodles[1], 'pho')
assert.strictEqual(s1.noodles[2], undefined)
assert.strictEqual(s1.noodles.length, 2)
})
it('should allow assignment to change the type of a list element', () => {
s1 = Automerge.change(s1, doc => doc.noodles = ['udon', 'soba', 'ramen'])
assert.deepStrictEqual(s1.noodles, ['udon', 'soba', 'ramen'])
s1 = Automerge.change(s1, doc => doc.noodles[1] = {type: 'soba', options: ['hot', 'cold']})
assert.deepStrictEqual(s1.noodles, ['udon', {type: 'soba', options: ['hot', 'cold']}, 'ramen'])
s1 = Automerge.change(s1, doc => doc.noodles[1] = ['hot soba', 'cold soba'])
assert.deepStrictEqual(s1.noodles, ['udon', ['hot soba', 'cold soba'], 'ramen'])
s1 = Automerge.change(s1, doc => doc.noodles[1] = 'soba is the best')
assert.deepStrictEqual(s1.noodles, ['udon', 'soba is the best', 'ramen'])
})
it('should allow list creation and assignment in the same change callback', () => {
s1 = Automerge.change(Automerge.init(), doc => {
doc.letters = ['a', 'b', 'c']
doc.letters[1] = 'd'
})
assert.strictEqual(s1.letters[1], 'd')
})
it('should allow adding and removing list elements in the same change callback', () => {
s1 = Automerge.change(Automerge.init(), doc => doc.noodles = [])
s1 = Automerge.change(s1, doc => {
doc.noodles.push('udon')
doc.noodles.deleteAt(0)
})
assert.deepStrictEqual(s1, {noodles: []})
// do the add-remove cycle twice, test for #151 (https://github.com/automerge/automerge/issues/151)
s1 = Automerge.change(s1, doc => {
doc.noodles.push('soba')
doc.noodles.deleteAt(0)
})
assert.deepStrictEqual(s1, {noodles: []})
})
it('should handle arbitrary-depth nesting', () => {
s1 = Automerge.change(s1, doc => doc.maze = [[[[[[[['noodles', ['here']]]]]]]]])
s1 = Automerge.change(s1, doc => doc.maze[0][0][0][0][0][0][0][1].unshift('found'))
assert.deepStrictEqual(s1.maze, [[[[[[[['noodles', ['found', 'here']]]]]]]]])
assert.deepStrictEqual(s1.maze[0][0][0][0][0][0][0][1][1], 'here')
})
it('should not allow several references to the same list object', () => {
s1 = Automerge.change(s1, doc => doc.list = [])
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = doc.list })
}, /Cannot create a reference to an existing document object/)
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = s1.list })
}, /Cannot create a reference to an existing document object/)
assert.throws(() => {
Automerge.change(s1, doc => { doc.x = []; doc.y = doc.x })
}, /Cannot create a reference to an existing document object/)
})
})
describe('counters', () => {
it('should allow deleting counters from maps', () => {
const s1 = Automerge.change(Automerge.init(), doc => doc.birds = {wrens: new Automerge.Counter(1)})
const s2 = Automerge.change(s1, doc => doc.birds.wrens.increment(2))
const s3 = Automerge.change(s2, doc => delete doc.birds.wrens)
assert.deepStrictEqual(s2, {birds: {wrens: new Automerge.Counter(3)}})
assert.deepStrictEqual(s3, {birds: {}})
})
it('should not allow deleting counters from lists', () => {
const s1 = Automerge.change(Automerge.init(), doc => doc.recordings = [new Automerge.Counter(1)])
const s2 = Automerge.change(s1, doc => doc.recordings[0].increment(2))
assert.deepStrictEqual(s2, {recordings: [new Automerge.Counter(3)]})
assert.throws(() => { Automerge.change(s2, doc => doc.recordings.deleteAt(0)) }, /Unsupported operation/)
})
})
})
describe('concurrent use', () => {
let s1, s2, s3
beforeEach(() => {
s1 = Automerge.init()
s2 = Automerge.init()
s3 = Automerge.init()
})
it('should merge concurrent updates of different properties', () => {
s1 = Automerge.change(s1, doc => doc.foo = 'bar')
s2 = Automerge.change(s2, doc => doc.hello = 'world')
s3 = Automerge.merge(s1, s2)
assert.strictEqual(s3.foo, 'bar')
assert.strictEqual(s3.hello, 'world')
assert.deepStrictEqual(s3, {foo: 'bar', hello: 'world'})
assert.strictEqual(Automerge.getConflicts(s3, 'foo'), undefined)
assert.strictEqual(Automerge.getConflicts(s3, 'hello'), undefined)
})
it('should add concurrent increments of the same property', () => {
s1 = Automerge.change(s1, doc => doc.counter = new Automerge.Counter())
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.counter.increment())
s2 = Automerge.change(s2, doc => doc.counter.increment(2))
s3 = Automerge.merge(s1, s2)
assert.strictEqual(s1.counter.value, 1)
assert.strictEqual(s2.counter.value, 2)
assert.strictEqual(s3.counter.value, 3)
assert.strictEqual(Automerge.getConflicts(s3, 'counter'), undefined)
})
it('should add increments only to the values they precede', () => {
s1 = Automerge.change(s1, doc => doc.counter = new Automerge.Counter(0))
s1 = Automerge.change(s1, doc => doc.counter.increment())
s2 = Automerge.change(s2, doc => doc.counter = new Automerge.Counter(100))
s2 = Automerge.change(s2, doc => doc.counter.increment(3))
s3 = Automerge.merge(s1, s2)
if (Automerge.getActorId(s1) > Automerge.getActorId(s2)) {
assert.deepStrictEqual(s3, {counter: new Automerge.Counter(1)})
} else {
assert.deepStrictEqual(s3, {counter: new Automerge.Counter(103)})
}
assert.deepStrictEqual(Automerge.getConflicts(s3, 'counter'), {
[`1@${Automerge.getActorId(s1)}`]: new Automerge.Counter(1),
[`1@${Automerge.getActorId(s2)}`]: new Automerge.Counter(103)
})
})
it('should detect concurrent updates of the same field', () => {
s1 = Automerge.change(s1, doc => doc.field = 'one')
s2 = Automerge.change(s2, doc => doc.field = 'two')
s3 = Automerge.merge(s1, s2)
if (Automerge.getActorId(s1) > Automerge.getActorId(s2)) {
assert.deepStrictEqual(s3, {field: 'one'})
} else {
assert.deepStrictEqual(s3, {field: 'two'})
}
assert.deepStrictEqual(Automerge.getConflicts(s3, 'field'), {
[`1@${Automerge.getActorId(s1)}`]: 'one',
[`1@${Automerge.getActorId(s2)}`]: 'two'
})
})
it('should detect concurrent updates of the same list element', () => {
s1 = Automerge.change(s1, doc => doc.birds = ['finch'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds[0] = 'greenfinch')
s2 = Automerge.change(s2, doc => doc.birds[0] = 'goldfinch')
s3 = Automerge.merge(s1, s2)
if (Automerge.getActorId(s1) > Automerge.getActorId(s2)) {
assert.deepStrictEqual(s3.birds, ['greenfinch'])
} else {
assert.deepStrictEqual(s3.birds, ['goldfinch'])
}
assert.deepStrictEqual(Automerge.getConflicts(s3.birds, 0), {
[`3@${Automerge.getActorId(s1)}`]: 'greenfinch',
[`3@${Automerge.getActorId(s2)}`]: 'goldfinch'
})
})
it('should handle assignment conflicts of different types', () => {
s1 = Automerge.change(s1, doc => doc.field = 'string')
s2 = Automerge.change(s2, doc => doc.field = ['list'])
s3 = Automerge.change(s3, doc => doc.field = {thing: 'map'})
s1 = Automerge.merge(Automerge.merge(s1, s2), s3)
assertEqualsOneOf(s1.field, 'string', ['list'], {thing: 'map'})
assert.deepStrictEqual(Automerge.getConflicts(s1, 'field'), {
[`1@${Automerge.getActorId(s1)}`]: 'string',
[`1@${Automerge.getActorId(s2)}`]: ['list'],
[`1@${Automerge.getActorId(s3)}`]: {thing: 'map'}
})
})
it('should handle changes within a conflicting map field', () => {
s1 = Automerge.change(s1, doc => doc.field = 'string')
s2 = Automerge.change(s2, doc => doc.field = {})
s2 = Automerge.change(s2, doc => doc.field.innerKey = 42)
s3 = Automerge.merge(s1, s2)
assertEqualsOneOf(s3.field, 'string', {innerKey: 42})
assert.deepStrictEqual(Automerge.getConflicts(s3, 'field'), {
[`1@${Automerge.getActorId(s1)}`]: 'string',
[`1@${Automerge.getActorId(s2)}`]: {innerKey: 42}
})
})
it('should handle changes within a conflicting list element', () => {
s1 = Automerge.change(s1, doc => doc.list = ['hello'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.list[0] = {map1: true})
s1 = Automerge.change(s1, doc => doc.list[0].key = 1)
s2 = Automerge.change(s2, doc => doc.list[0] = {map2: true})
s2 = Automerge.change(s2, doc => doc.list[0].key = 2)
s3 = Automerge.merge(s1, s2)
if (Automerge.getActorId(s1) > Automerge.getActorId(s2)) {
assert.deepStrictEqual(s3.list, [{map1: true, key: 1}])
} else {
assert.deepStrictEqual(s3.list, [{map2: true, key: 2}])
}
assert.deepStrictEqual(Automerge.getConflicts(s3.list, 0), {
[`3@${Automerge.getActorId(s1)}`]: {map1: true, key: 1},
[`3@${Automerge.getActorId(s2)}`]: {map2: true, key: 2}
})
})
it('should not merge concurrently assigned nested maps', () => {
s1 = Automerge.change(s1, doc => doc.config = {background: 'blue'})
s2 = Automerge.change(s2, doc => doc.config = {logo_url: 'logo.png'})
s3 = Automerge.merge(s1, s2)
assertEqualsOneOf(s3.config, {background: 'blue'}, {logo_url: 'logo.png'})
assert.deepStrictEqual(Automerge.getConflicts(s3, 'config'), {
[`1@${Automerge.getActorId(s1)}`]: {background: 'blue'},
[`1@${Automerge.getActorId(s2)}`]: {logo_url: 'logo.png'}
})
})
it('should clear conflicts after assigning a new value', () => {
s1 = Automerge.change(s1, doc => doc.field = 'one')
s2 = Automerge.change(s2, doc => doc.field = 'two')
s3 = Automerge.merge(s1, s2)
s3 = Automerge.change(s3, doc => doc.field = 'three')
assert.deepStrictEqual(s3, {field: 'three'})
assert.strictEqual(Automerge.getConflicts(s3, 'field'), undefined)
s2 = Automerge.merge(s2, s3)
assert.deepStrictEqual(s2, {field: 'three'})
assert.strictEqual(Automerge.getConflicts(s2, 'field'), undefined)
})
it('should handle concurrent insertions at different list positions', () => {
s1 = Automerge.change(s1, doc => doc.list = ['one', 'three'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.list.splice(1, 0, 'two'))
s2 = Automerge.change(s2, doc => doc.list.push('four'))
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s3, {list: ['one', 'two', 'three', 'four']})
assert.strictEqual(Automerge.getConflicts(s3, 'list'), undefined)
})
it('should handle concurrent insertions at the same list position', () => {
s1 = Automerge.change(s1, doc => doc.birds = ['parakeet'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds.push('starling'))
s2 = Automerge.change(s2, doc => doc.birds.push('chaffinch'))
s3 = Automerge.merge(s1, s2)
assertEqualsOneOf(s3.birds, ['parakeet', 'starling', 'chaffinch'], ['parakeet', 'chaffinch', 'starling'])
s2 = Automerge.merge(s2, s3)
assert.deepStrictEqual(s2, s3)
})
it('should handle concurrent assignment and deletion of a map entry', () => {
// Add-wins semantics
s1 = Automerge.change(s1, doc => doc.bestBird = 'robin')
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => delete doc['bestBird'])
s2 = Automerge.change(s2, doc => doc.bestBird = 'magpie')
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s1, {})
assert.deepStrictEqual(s2, {bestBird: 'magpie'})
assert.deepStrictEqual(s3, {bestBird: 'magpie'})
assert.strictEqual(Automerge.getConflicts(s3, 'bestBird'), undefined)
})
it('should handle concurrent assignment and deletion of a list element', () => {
// Concurrent assignment ressurects a deleted list element. Perhaps a little
// surprising, but consistent with add-wins semantics of maps (see test above)
s1 = Automerge.change(s1, doc => doc.birds = ['blackbird', 'thrush', 'goldfinch'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds[1] = 'starling')
s2 = Automerge.change(s2, doc => doc.birds.splice(1, 1))
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s1.birds, ['blackbird', 'starling', 'goldfinch'])
assert.deepStrictEqual(s2.birds, ['blackbird', 'goldfinch'])
assert.deepStrictEqual(s3.birds, ['blackbird', 'starling', 'goldfinch'])
})
it('should handle insertion after a deleted list element', () => {
s1 = Automerge.change(s1, doc => doc.birds = ['blackbird', 'thrush', 'goldfinch'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds.splice(1, 2))
s2 = Automerge.change(s2, doc => doc.birds.splice(2, 0, 'starling'))
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s3, {birds: ['blackbird', 'starling']})
assert.deepStrictEqual(Automerge.merge(s2, s3), {birds: ['blackbird', 'starling']})
})
it('should handle concurrent deletion of the same element', () => {
s1 = Automerge.change(s1, doc => doc.birds = ['albatross','buzzard', 'cormorant'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds.deleteAt(1)) // buzzard
s2 = Automerge.change(s2, doc => doc.birds.deleteAt(1)) // buzzard
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s3.birds, ['albatross','cormorant'])
})
it('should handle concurrent deletion of different elements', () => {
s1 = Automerge.change(s1, doc => doc.birds = ['albatross','buzzard', 'cormorant'])
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.birds.deleteAt(0)) // albatross
s2 = Automerge.change(s2, doc => doc.birds.deleteAt(1)) // buzzard
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s3.birds, ['cormorant'])
})
it('should handle concurrent updates at different levels of the tree', () => {
// A delete higher up in the tree overrides an update in a subtree
s1 = Automerge.change(s1, doc => doc.animals = {birds: {pink: 'flamingo', black: 'starling'}, mammals: ['badger']})
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => doc.animals.birds.brown = 'sparrow')
s2 = Automerge.change(s2, doc => delete doc.animals['birds'])
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s1.animals, {
birds: {
pink: 'flamingo', brown: 'sparrow', black: 'starling'
},
mammals: ['badger']
})
assert.deepStrictEqual(s2.animals, {mammals: ['badger']})
assert.deepStrictEqual(s3.animals, {mammals: ['badger']})
})
it('should handle updates of concurrently deleted objects', () => {
s1 = Automerge.change(s1, doc => doc.birds = {blackbird: {feathers: 'black'}})
s2 = Automerge.merge(s2, s1)
s1 = Automerge.change(s1, doc => delete doc.birds.blackbird)
s2 = Automerge.change(s2, doc => doc.birds.blackbird.beak = 'orange')
s3 = Automerge.merge(s1, s2)
assert.deepStrictEqual(s1, {birds: {}})
})