summaryrefslogtreecommitdiffstats
path: root/src/testdir/test_lua.vim
blob: a99affc04790b27331285f15ba0670884d4929de (plain)
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
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
" Tests for Lua.

source check.vim

" This test also works without the lua feature.
func Test_skip_lua()
  if 0
    lua print("Not executed")
  endif
endfunc

CheckFeature lua

" Depending on the lua version, the error messages are different.
let [s:major, s:minor, s:patch] = luaeval('vim.lua_version')->split('\.')->map({-> str2nr(v:val)})
let s:lua_53_or_later = 0
let s:lua_543 = 0
if (s:major == 5 && s:minor >= 3) || s:major > 5
  let s:lua_53_or_later = 1
  if s:major == 5 && s:minor == 4 && s:patch == 3
    let s:lua_543 = 1
  endif
endif

func TearDown()
  " Run garbage collection after each test to exercise luaV_setref().
  call test_garbagecollect_now()
endfunc

" Check that switching to another buffer does not trigger ml_get error.
func Test_lua_luado_change_buffer()
  new

  let wincount = winnr('$')
  call setline(1, ['one', 'two', 'three'])
  luado vim.command("new")
  call assert_equal(wincount + 1, winnr('$'))

  %bwipe!
endfunc

" Check that :luado deleting lines does not trigger ml_get error.
func Test_lua_luado_delete_lines()
  new

  call setline(1, ['one', 'two', 'three'])
  luado vim.command("%d_")
  call assert_equal([''], getline(1, '$'))

  call setline(1, ['one', 'two', 'three'])
  luado vim.command("1,2d_")
  call assert_equal(['three'], getline(1, '$'))

  call setline(1, ['one', 'two', 'three'])
  luado vim.command("2,3d_"); return "REPLACED"
  call assert_equal(['REPLACED'], getline(1, '$'))

  call setline(1, ['one', 'two', 'three'])
  2,3luado vim.command("1,2d_"); return "REPLACED"
  call assert_equal(['three'], getline(1, '$'))

  bwipe!
endfunc

func Test_lua_luado()
  new
  call setline(1, ['one', 'two'])
  luado return(linenr)
  call assert_equal(['1', '2'], getline(1, '$'))
  close!

  " Error cases
  call assert_fails('luado string.format()',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'format' (string expected, got no value)")
  if s:lua_543
    let msg = "[string \"vim chunk\"]:1: global 'func' is not callable (a nil value)"
  elseif s:lua_53_or_later
    let msg = "[string \"vim chunk\"]:1: attempt to call a nil value (global 'func')"
  else
    let msg = "[string \"vim chunk\"]:1: attempt to call global 'func' (a nil value)"
  endif
  call assert_fails('luado func()', msg)
  call assert_fails('luado error("failed")', "[string \"vim chunk\"]:1: failed")
endfunc

" Test vim.eval()
func Test_lua_eval()
  " lua.eval with a number
  lua v = vim.eval('123')
  call assert_equal('number', luaeval('vim.type(v)'))
  call assert_equal(123, luaeval('v'))

  " lua.eval with a string
  lua v = vim.eval('"abc"')
  call assert_equal('string', 'vim.type(v)'->luaeval())
  call assert_equal('abc', luaeval('v'))

  " lua.eval with a list
  lua v = vim.eval("['a']")
  call assert_equal('list', luaeval('vim.type(v)'))
  call assert_equal(['a'], luaeval('v'))

  " lua.eval with a dict
  lua v = vim.eval("{'a':'b'}")
  call assert_equal('dict', luaeval('vim.type(v)'))
  call assert_equal({'a':'b'}, luaeval('v'))

  " lua.eval with a blob
  lua v = vim.eval("0z00112233.deadbeef")
  call assert_equal('blob', luaeval('vim.type(v)'))
  call assert_equal(0z00112233.deadbeef, luaeval('v'))

  " lua.eval with a float
  lua v = vim.eval('3.14')
  call assert_equal('number', luaeval('vim.type(v)'))
  call assert_equal(3.14, luaeval('v'))

  " lua.eval with a bool
  lua v = vim.eval('v:true')
  call assert_equal('number', luaeval('vim.type(v)'))
  call assert_equal(1, luaeval('v'))
  lua v = vim.eval('v:false')
  call assert_equal('number', luaeval('vim.type(v)'))
  call assert_equal(0, luaeval('v'))

  " lua.eval with a null
  lua v = vim.eval('v:null')
  call assert_equal('nil', luaeval('vim.type(v)'))
  call assert_equal(v:null, luaeval('v'))

  call assert_fails('lua v = vim.eval(nil)',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got nil)")
  call assert_fails('lua v = vim.eval(true)',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got boolean)")
  call assert_fails('lua v = vim.eval({})',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got table)")
  call assert_fails('lua v = vim.eval(print)',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got function)")
  call assert_fails('lua v = vim.eval(vim.buffer())',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'eval' (string expected, got userdata)")

  lua v = nil
endfunc

" Test luaeval() with lambda
func Test_luaeval_with_lambda()
  lua function hello_luaeval_lambda(a, cb) return a .. cb() end
  call assert_equal('helloworld',
        \ luaeval('hello_luaeval_lambda(_A[1], _A[2])',
        \         ['hello', {->'world'}]))
  lua hello_luaeval_lambda = nil
endfunc

" Test vim.window()
func Test_lua_window()
  e Xfoo2
  new Xfoo1

  " Window 1 (top window) contains Xfoo1
  " Window 2 (bottom window) contains Xfoo2
  call assert_equal('Xfoo1', luaeval('vim.window(1):buffer().name'))
  call assert_equal('Xfoo2', luaeval('vim.window(2):buffer().name'))

  " Window 3 does not exist so vim.window(3) should return nil
  call assert_equal('nil', luaeval('tostring(vim.window(3))'))

  if s:lua_543
    let msg = "[string \"luaeval\"]:1: field 'xyz' is not callable (a nil value)"
  elseif s:lua_53_or_later
    let msg = "[string \"luaeval\"]:1: attempt to call a nil value (field 'xyz')"
  else
    let msg = "[string \"luaeval\"]:1: attempt to call field 'xyz' (a nil value)"
  endif
  call assert_fails("let n = luaeval('vim.window().xyz()')", msg)
  call assert_fails('lua vim.window().xyz = 1',
        \ "[string \"vim chunk\"]:1: invalid window property: `xyz'")

  %bwipe!
endfunc

" Test vim.window().height
func Test_lua_window_height()
  new
  lua vim.window().height = 2
  call assert_equal(2, winheight(0))
  lua vim.window().height = vim.window().height + 1
  call assert_equal(3, winheight(0))
  bwipe!
endfunc

" Test vim.window().width
func Test_lua_window_width()
  vert new
  lua vim.window().width = 2
  call assert_equal(2, winwidth(0))
  lua vim.window().width = vim.window().width + 1
  call assert_equal(3, winwidth(0))
  bwipe!
endfunc

" Test vim.window().line and vim.window.col
func Test_lua_window_line_col()
  new
  call setline(1, ['line1', 'line2', 'line3'])
  lua vim.window().line = 2
  lua vim.window().col = 4
  call assert_equal([0, 2, 4, 0], getpos('.'))
  lua vim.window().line = vim.window().line + 1
  lua vim.window().col = vim.window().col - 1
  call assert_equal([0, 3, 3, 0], getpos('.'))

  call assert_fails('lua vim.window().line = 10',
        \           '[string "vim chunk"]:1: line out of range')
  bwipe!
endfunc

" Test vim.call
func Test_lua_call()
  call assert_equal(has('lua'), luaeval('vim.call("has", "lua")'))
  call assert_equal(printf("Hello %s", "vim"), luaeval('vim.call("printf", "Hello %s", "vim")'))

  " Error cases
  call assert_fails("call luaeval('vim.call(\"min\", 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)')",
        \ s:lua_53_or_later
        \ ? '[string "luaeval"]:1: Function called with too many arguments'
        \ : 'Function called with too many arguments')
  lua co = coroutine.create(function () print("hi") end)
  call assert_fails("call luaeval('vim.call(\"type\", co)')",
        \ s:lua_53_or_later
        \ ? '[string "luaeval"]:1: lua: cannot convert value'
        \ : 'lua: cannot convert value')
  lua co = nil
  call assert_fails("call luaeval('vim.call(\"abc\")')",
        \ ['E117:', s:lua_53_or_later ? '\[string "luaeval"]:1: lua: call_vim_function failed'
        \                             : 'lua: call_vim_function failed'])
endfunc

" Test vim.fn.*
func Test_lua_fn()
  call assert_equal(has('lua'), luaeval('vim.fn.has("lua")'))
  call assert_equal(printf("Hello %s", "vim"), luaeval('vim.fn.printf("Hello %s", "vim")'))
endfunc

" Test setting the current window
func Test_lua_window_set_current()
  new Xfoo1
  lua w1 = vim.window()
  new Xfoo2
  lua w2 = vim.window()

  call assert_equal('Xfoo2', bufname('%'))
  lua w1()
  call assert_equal('Xfoo1', bufname('%'))
  lua w2()
  call assert_equal('Xfoo2', bufname('%'))

  lua w1, w2 = nil
  %bwipe!
endfunc

" Test vim.window().buffer
func Test_lua_window_buffer()
  new Xfoo1
  lua w1 = vim.window()
  lua b1 = w1.buffer()
  new Xfoo2
  lua w2 = vim.window()
  lua b2 = w2.buffer()

  lua b1()
  call assert_equal('Xfoo1', bufname('%'))
  lua b2()
  call assert_equal('Xfoo2', bufname('%'))

  lua b1, b2, w1, w2 = nil
  %bwipe!
endfunc

" Test vim.window():previous() and vim.window():next()
func Test_lua_window_next_previous()
  new Xfoo1
  new Xfoo2
  new Xfoo3
  wincmd j

  call assert_equal('Xfoo2', luaeval('vim.window().buffer().name'))
  call assert_equal('Xfoo1', luaeval('vim.window():next():buffer().name'))
  call assert_equal('Xfoo3', luaeval('vim.window():previous():buffer().name'))

  %bwipe!
endfunc

" Test vim.window():isvalid()
func Test_lua_window_isvalid()
  new Xfoo
  lua w = vim.window()
  call assert_true(luaeval('w:isvalid()'))

  " FIXME: how to test the case when isvalid() returns v:false?
  " isvalid() gives errors when the window is deleted. Is it a bug?

  lua w = nil
  bwipe!
endfunc

" Test vim.buffer() with and without argument
func Test_lua_buffer()
  new Xfoo1
  let bn1 = bufnr('%')
  new Xfoo2
  let bn2 = bufnr('%')

  " Test vim.buffer() without argument.
  call assert_equal('Xfoo2', luaeval("vim.buffer().name"))

  " Test vim.buffer() with string argument.
  call assert_equal('Xfoo1', luaeval("vim.buffer('Xfoo1').name"))
  call assert_equal('Xfoo2', luaeval("vim.buffer('Xfoo2').name"))

  " Test vim.buffer() with integer argument.
  call assert_equal('Xfoo1', luaeval("vim.buffer(" . bn1 . ").name"))
  call assert_equal('Xfoo2', luaeval("vim.buffer(" . bn2 . ").name"))

  lua bn1, bn2 = nil
  %bwipe!
endfunc

" Test vim.buffer().name and vim.buffer().fname
func Test_lua_buffer_name()
  new
  call assert_equal('', luaeval('vim.buffer().name'))
  call assert_equal('', luaeval('vim.buffer().fname'))
  bwipe!

  new Xfoo
  call assert_equal('Xfoo', luaeval('vim.buffer().name'))
  call assert_equal(expand('%:p'), luaeval('vim.buffer().fname'))
  bwipe!
endfunc

" Test vim.buffer().number
func Test_lua_buffer_number()
  " All numbers in Lua are floating points number (no integers).
  call assert_equal(bufnr('%'), float2nr(luaeval('vim.buffer().number')))
endfunc

" Test inserting lines in buffer.
func Test_lua_buffer_insert()
  new
  lua vim.buffer()[1] = '3'
  lua vim.buffer():insert('1', 0)
  lua vim.buffer():insert('2', 1)
  lua vim.buffer():insert('4', 10)

  call assert_equal(['1', '2', '3', '4'], getline(1, '$'))
  call assert_equal('4', luaeval('vim.buffer()[4]'))
  call assert_equal(v:null, luaeval('vim.buffer()[5]'))
  call assert_equal(v:null, luaeval('vim.buffer()[{}]'))
  if s:lua_543
    let msg = "[string \"vim chunk\"]:1: method 'xyz' is not callable (a nil value)"
  elseif s:lua_53_or_later
    let msg = "[string \"vim chunk\"]:1: attempt to call a nil value (method 'xyz')"
  else
    let msg = "[string \"vim chunk\"]:1: attempt to call method 'xyz' (a nil value)"
  endif
  call assert_fails('lua vim.buffer():xyz()', msg)
  call assert_fails('lua vim.buffer()[1] = {}',
        \ '[string "vim chunk"]:1: wrong argument to change')
  bwipe!
endfunc

" Test deleting line in buffer
func Test_lua_buffer_delete()
  new
  call setline(1, ['1', '2', '3'])
  call cursor(3, 1)
  lua vim.buffer()[2] = nil
  call assert_equal(['1', '3'], getline(1, '$'))

  call assert_fails('lua vim.buffer()[3] = nil',
        \           '[string "vim chunk"]:1: invalid line number')
  bwipe!
endfunc

" Test #vim.buffer() i.e. number of lines in buffer
func Test_lua_buffer_number_lines()
  new
  call setline(1, ['a', 'b', 'c'])
  call assert_equal(3, luaeval('#vim.buffer()'))
  bwipe!
endfunc

" Test vim.buffer():next() and vim.buffer():previous()
" Note that these functions get the next or previous buffers
" but do not switch buffer.
func Test_lua_buffer_next_previous()
  new Xfoo1
  new Xfoo2
  new Xfoo3
  b Xfoo2

  lua bn = vim.buffer():next()
  lua bp = vim.buffer():previous()

  call assert_equal('Xfoo2', luaeval('vim.buffer().name'))
  call assert_equal('Xfoo1', luaeval('bp.name'))
  call assert_equal('Xfoo3', luaeval('bn.name'))

  call assert_equal('Xfoo2', bufname('%'))

  lua bn()
  call assert_equal('Xfoo3', luaeval('vim.buffer().name'))
  call assert_equal('Xfoo3', bufname('%'))

  lua bp()
  call assert_equal('Xfoo1', luaeval('vim.buffer().name'))
  call assert_equal('Xfoo1', bufname('%'))

  lua bn, bp = nil
  %bwipe!
endfunc

" Test vim.buffer():isvalid()
func Test_lua_buffer_isvalid()
  new Xfoo
  lua b = vim.buffer()
  call assert_true(luaeval('b:isvalid()'))

  " FIXME: how to test the case when isvalid() returns v:false?
  " isvalid() gives errors when the buffer is wiped. Is it a bug?

  lua b = nil
  bwipe!
endfunc

func Test_lua_list()
  call assert_equal([], luaeval('vim.list()'))

  let l = []
  lua l = vim.eval('l')
  lua l:add(123)
  lua l:add('abc')
  lua l:add(true)
  lua l:add(false)
  lua l:add(nil)
  lua l:add(vim.eval("[1, 2, 3]"))
  lua l:add(vim.eval("{'a':1, 'b':2, 'c':3}"))
  call assert_equal([123, 'abc', v:true, v:false, v:null, [1, 2, 3], {'a': 1, 'b': 2, 'c': 3}], l)
  call assert_equal(7, luaeval('#l'))
  call assert_match('^list: \%(0x\)\?\x\+$', luaeval('tostring(l)'))

  lua l[1] = 124
  lua l[6] = nil
  lua l:insert('first')
  lua l:insert('xx', 3)
  call assert_fails('lua l:insert("xx", -20)',
        \ '[string "vim chunk"]:1: invalid position')
  call assert_equal(['first', 124, 'abc', 'xx', v:true, v:false, v:null, {'a': 1, 'b': 2, 'c': 3}], l)

  lockvar 1 l
  call assert_fails('lua l:add("x")', '[string "vim chunk"]:1: list is locked')
  call assert_fails('lua l:insert(2)', '[string "vim chunk"]:1: list is locked')
  call assert_fails('lua l[9] = 1', '[string "vim chunk"]:1: list is locked')

  unlockvar l
  let l = [1, 2]
  lua ll = vim.eval('l')
  let x = luaeval("ll[3]")
  call assert_equal(v:null, x)
  if s:lua_543
    let msg = "[string \"luaeval\"]:1: method 'xyz' is not callable (a nil value)"
  elseif s:lua_53_or_later
    let msg = "[string \"luaeval\"]:1: attempt to call a nil value (method 'xyz')"
  else
    let msg = "[string \"luaeval\"]:1: attempt to call method 'xyz' (a nil value)"
  endif
  call assert_fails('let x = luaeval("ll:xyz(3)")', msg)
  let y = luaeval("ll[{}]")
  call assert_equal(v:null, y)

  lua l = nil
endfunc

func Test_lua_list_table()
  " See :help lua-vim
  " Non-numeric keys should not be used to initialize the list
  " so say = 'hi' should be ignored.
  lua t = {3.14, 'hello', false, true, say = 'hi'}
  call assert_equal([3.14, 'hello', v:false, v:true], luaeval('vim.list(t)'))
  lua t = nil

  call assert_fails('lua vim.list(1)', '[string "vim chunk"]:1: table expected, got number')
  call assert_fails('lua vim.list("x")', '[string "vim chunk"]:1: table expected, got string')
  call assert_fails('lua vim.list(print)', '[string "vim chunk"]:1: table expected, got function')
  call assert_fails('lua vim.list(true)', '[string "vim chunk"]:1: table expected, got boolean')
endfunc

func Test_lua_list_table_insert_remove()
  if !s:lua_53_or_later
    throw 'Skipped: Lua version < 5.3'
  endif

  let l = [1, 2]
  lua t = vim.eval('l')
  lua table.insert(t, 10)
  lua t[#t + 1] = 20
  lua table.insert(t, 2, 30)
  call assert_equal(l, [1, 30, 2, 10, 20])
  lua table.remove(t, 2)
  call assert_equal(l, [1, 2, 10, 20])
  lua t[3] = nil
  call assert_equal(l, [1, 2, 20])
  lua removed_value = table.remove(t, 3)
  call assert_equal(luaeval('removed_value'), 20)
  lua t = nil
  lua removed_value = nil
  unlet l
endfunc

" Test l() i.e. iterator on list
func Test_lua_list_iter()
  lua l = vim.list():add('foo'):add('bar')
  lua str = ''
  lua for v in l() do str = str .. v end
  call assert_equal('foobar', luaeval('str'))

  lua str, l = nil
endfunc

func Test_lua_recursive_list()
  lua l = vim.list():add(1):add(2)
  lua l = l:add(l)

  call assert_equal(1, luaeval('l[1]'))
  call assert_equal(2, luaeval('l[2]'))

  call assert_equal(1, luaeval('l[3][1]'))
  call assert_equal(2, luaeval('l[3][2]'))

  call assert_equal(1, luaeval('l[3][3][1]'))
  call assert_equal(2, luaeval('l[3][3][2]'))

  call assert_equal('[1, 2, [...]]', string(luaeval('l')))

  call assert_match('^list: \%(0x\)\?\x\+$', luaeval('tostring(l)'))
  call assert_equal(luaeval('tostring(l)'), luaeval('tostring(l[3])'))

  call assert_equal(luaeval('l'), luaeval('l[3]'))
  call assert_equal(luaeval('l'), luaeval('l[3][3]'))

  lua l = nil
endfunc

func Test_lua_dict()
  call assert_equal({}, luaeval('vim.dict()'))

  let d = {}
  lua d = vim.eval('d')
  lua d[0] = 123
  lua d[1] = "abc"
  lua d[2] = true
  lua d[3] = false
  lua d[4] = vim.eval("[1, 2, 3]")
  lua d[5] = vim.eval("{'a':1, 'b':2, 'c':3}")
  call assert_equal({'0':123, '1':'abc', '2':v:true, '3':v:false, '4': [1, 2, 3], '5': {'a':1, 'b':2, 'c':3}}, d)
  call assert_equal(6, luaeval('#d'))
  call assert_match('^dict: \%(0x\)\?\x\+$', luaeval('tostring(d)'))

  call assert_equal('abc', luaeval('d[1]'))
  call assert_equal(v:null, luaeval('d[22]'))

  lua d[0] = 124
  lua d[4] = nil
  call assert_equal({'0':124, '1':'abc', '2':v:true, '3':v:false, '5': {'a':1, 'b':2, 'c':3}}, d)

  lockvar 1 d
  call assert_fails('lua d[6] = 1', '[string "vim chunk"]:1: dict is locked')
  unlockvar d

  " Error case
  lua d = {}
  lua d[''] = 10
  call assert_fails("let t = luaeval('vim.dict(d)')",
        \ s:lua_53_or_later
        \ ? '[string "luaeval"]:1: table has empty key'
        \ : 'table has empty key')
  let d = {}
  lua x = vim.eval('d')
  call assert_fails("lua x[''] = 10", '[string "vim chunk"]:1: empty key')
  lua x['a'] = nil
  call assert_equal({}, d)

  " cannot assign funcrefs in the global scope
  lua x = vim.eval('g:')
  call assert_fails("lua x['min'] = vim.funcref('max')",
        \ '[string "vim chunk"]:1: cannot assign funcref to builtin scope')

  lua d = nil
endfunc

func Test_lua_dict_table()
  lua t = {key1 = 'x', key2 = 3.14, key3 = true, key4 = false}
  call assert_equal({'key1': 'x', 'key2': 3.14, 'key3': v:true, 'key4': v:false},
        \           luaeval('vim.dict(t)'))

  " Same example as in :help lua-vim.
  lua t = {math.pi, false, say = 'hi'}
  " FIXME: commented out as it currently does not work as documented:
  " Expected {'say': 'hi'}
  " but got {'1': 3.141593, '2': v:false, 'say': 'hi'}
  " Is the documentation or the code wrong?
  "call assert_equal({'say' : 'hi'}, luaeval('vim.dict(t)'))
  lua t = nil

  call assert_fails('lua vim.dict(1)', '[string "vim chunk"]:1: table expected, got number')
  call assert_fails('lua vim.dict("x")', '[string "vim chunk"]:1: table expected, got string')
  call assert_fails('lua vim.dict(print)', '[string "vim chunk"]:1: table expected, got function')
  call assert_fails('lua vim.dict(true)', '[string "vim chunk"]:1: table expected, got boolean')
endfunc

" Test d() i.e. iterator on dictionary
func Test_lua_dict_iter()
  let d = {'a': 1, 'b':2}
  lua d = vim.eval('d')
  lua str = ''
  lua for k,v in d() do str = str .. k ..':' .. v .. ',' end
  call assert_equal('a:1,b:2,', luaeval('str'))

  lua str, d = nil
endfunc

func Test_lua_blob()
  call assert_equal(0z, luaeval('vim.blob("")'))
  call assert_equal(0z31326162, luaeval('vim.blob("12ab")'))
  call assert_equal(0z00010203, luaeval('vim.blob("\000\001\002\003")'))
  call assert_equal(0z8081FEFF, luaeval('vim.blob("\128\129\254\255")'))

  lua b = vim.blob("\000\000\000\000")
  call assert_equal(0z00000000, luaeval('b'))
  call assert_equal(4, luaeval('#b'))
  lua b[0], b[1], b[2], b[3] = 1, 32, 256, 0xff
  call assert_equal(0z012000ff, luaeval('b'))
  lua b[4] = string.byte("z", 1)
  call assert_equal(0z012000ff.7a, luaeval('b'))
  call assert_equal(5, luaeval('#b'))
  call assert_fails('lua b[#b+1] = 0x80', '[string "vim chunk"]:1: index out of range')
  lua b:add("12ab")
  call assert_equal(0z012000ff.7a313261.62, luaeval('b'))
  call assert_equal(9, luaeval('#b'))
  call assert_fails('lua b:add(nil)', '[string "vim chunk"]:1: string expected, got nil')
  call assert_fails('lua b:add(true)', '[string "vim chunk"]:1: string expected, got boolean')
  call assert_fails('lua b:add({})', '[string "vim chunk"]:1: string expected, got table')
  lua b = nil

  let b = 0z0102
  lua lb = vim.eval('b')
  let n = luaeval('lb[1]')
  call assert_equal(2, n)
  let n = luaeval('lb[6]')
  call assert_equal(v:null, n)
  if s:lua_543
    let msg = "[string \"luaeval\"]:1: method 'xyz' is not callable (a nil value)"
  elseif s:lua_53_or_later
    let msg = "[string \"luaeval\"]:1: attempt to call a nil value (method 'xyz')"
  else
    let msg = "[string \"luaeval\"]:1: attempt to call method 'xyz' (a nil value)"
  endif
  call assert_fails('let x = luaeval("lb:xyz(3)")', msg)
  let y = luaeval("lb[{}]")
  call assert_equal(v:null, y)

  lockvar b
  call assert_fails('lua lb[1] = 2', '[string "vim chunk"]:1: blob is locked')
  call assert_fails('lua lb:add("12")', '[string "vim chunk"]:1: blob is locked')

  " Error cases
  lua t = {}
  call assert_fails('lua b = vim.blob(t)',
        \ '[string "vim chunk"]:1: string expected, got table')
endfunc

def Vim9Test(Callback: func())
  Callback()
enddef

func Test_call_lua_func_from_vim9_func()
  " this only tests that Vim doesn't crash
  lua << EOF
vim.fn.Vim9Test(function () print('Hello') end)
EOF
endfunc

func Test_lua_funcref()
  function I(x)
    return a:x
  endfunction
  let R = function('I')
  lua i1 = vim.funcref"I"
  lua i2 = vim.eval"R"
  lua msg = "funcref|test|" .. (#i2(i1) == #i1(i2) and "OK" or "FAIL")
  lua msg = vim.funcref"tr"(msg, "|", " ")
  call assert_equal("funcref test OK", luaeval('msg'))

  " Error cases
  call assert_fails('lua f1 = vim.funcref("")',
        \ '[string "vim chunk"]:1: invalid function name: ')
  call assert_fails('lua f1 = vim.funcref("10")',
        \ '[string "vim chunk"]:1: invalid function name: 10')
  let fname = test_null_string()
  call assert_fails('lua f1 = vim.funcref(fname)',
        \ "[string \"vim chunk\"]:1: bad argument #1 to 'funcref' (string expected, got nil)")
  call assert_fails('lua vim.funcref("abc")()',
        \ ['E117:', '\[string "vim chunk"]:1: cannot call funcref'])

  " dict funcref
  function Mylen() dict
    return len(self.data)
  endfunction
  let l = [0, 1, 2, 3]
  let mydict = {'data': l}
  lua d = vim.eval"mydict"
  lua d.len = vim.funcref"Mylen" -- assign d as 'self'
  lua res = (d.len() == vim.funcref"len"(vim.eval"l")) and "OK" or "FAIL"
  call assert_equal("OK", luaeval('res'))
  call assert_equal(function('Mylen', {'data': l, 'len': function('Mylen')}), mydict.len)

  lua i1, i2, msg, d, res = nil
endfunc

" Test vim.type()
func Test_lua_type()
  " The following values are identical to Lua's type function.
  call assert_equal('string',   luaeval('vim.type("foo")'))
  call assert_equal('number',   luaeval('vim.type(1)'))
  call assert_equal('number',   luaeval('vim.type(1.2)'))
  call assert_equal('function', luaeval('vim.type(print)'))
  call assert_equal('table',    luaeval('vim.type({})'))
  call assert_equal('boolean',  luaeval('vim.type(true)'))
  call assert_equal('boolean',  luaeval('vim.type(false)'))
  call assert_equal('nil',      luaeval('vim.type(nil)'))

  " The following values are specific to Vim.
  call assert_equal('window',   luaeval('vim.type(vim.window())'))
  call assert_equal('buffer',   luaeval('vim.type(vim.buffer())'))
  call assert_equal('list',     luaeval('vim.type(vim.list())'))
  call assert_equal('dict',     luaeval('vim.type(vim.dict())'))
  call assert_equal('funcref',  luaeval('vim.type(vim.funcref("Test_type"))'))
endfunc

" Test vim.open()
func Test_lua_open()
  call assert_notmatch('XOpen', execute('ls'))

  " Open a buffer XOpen1, but do not jump to it.
  lua b = vim.open('XOpen1')
  call assert_equal('XOpen1', luaeval('b.name'))
  call assert_equal('', bufname('%'))

  call assert_match('XOpen1', execute('ls'))
  call assert_notequal('XOpen2', bufname('%'))

  " Open a buffer XOpen2 and jump to it.
  lua b = vim.open('XOpen2')()
  call assert_equal('XOpen2', luaeval('b.name'))
  call assert_equal('XOpen2', bufname('%'))

  lua b = nil
  %bwipe!
endfunc

func Test_update_package_paths()
  set runtimepath+=./testluaplugin
  call assert_equal("hello from lua", luaeval("require('testluaplugin').hello()"))
endfunc

func Vim_func_call_lua_callback(Concat, Cb)
  let l:message = a:Concat("hello", "vim")
  call a:Cb(l:message)
endfunc

func Test_pass_lua_callback_to_vim_from_lua()
  lua pass_lua_callback_to_vim_from_lua_result = ""
  call assert_equal("", luaeval("pass_lua_callback_to_vim_from_lua_result"))
  lua <<EOF
  vim.funcref('Vim_func_call_lua_callback')(
    function(greeting, message)
      return greeting .. " " .. message
    end,
    function(message)
      pass_lua_callback_to_vim_from_lua_result = message
    end)
EOF
  call assert_equal("hello vim", luaeval("pass_lua_callback_to_vim_from_lua_result"))
endfunc

func Vim_func_call_metatable_lua_callback(Greet)
  return a:Greet("world")
endfunc

func Test_pass_lua_metatable_callback_to_vim_from_lua()
  let result = luaeval("vim.funcref('Vim_func_call_metatable_lua_callback')(setmetatable({ space = ' '}, { __call = function(tbl, msg) return 'hello' .. tbl.space .. msg  end }) )")
  call assert_equal("hello world", result)
endfunc

" Test vim.line()
func Test_lua_line()
  new
  call setline(1, ['first line', 'second line'])
  1
  call assert_equal('first line', luaeval('vim.line()'))
  2
  call assert_equal('second line', luaeval('vim.line()'))
  bwipe!
endfunc

" Test vim.beep()
func Test_lua_beep()
  call assert_beeps('lua vim.beep()')
endfunc

" Test errors in luaeval()
func Test_luaeval_error()
  " Compile error
  call assert_fails("call luaeval('-nil')",
  \ '[string "luaeval"]:1: attempt to perform arithmetic on a nil value')
  call assert_fails("call luaeval(']')",
  \ "[string \"luaeval\"]:1: unexpected symbol near ']'")
  lua co = coroutine.create(function () print("hi") end)
  call assert_fails('let i = luaeval("co")', 'luaeval: cannot convert value')
  lua co = nil
  call assert_fails('let m = luaeval("{}")', 'luaeval: cannot convert value')
endfunc

" Test :luafile foo.lua
func Test_luafile()
  call writefile(["str = 'hello'", "num = 123" ], 'Xlua_file', 'D')
  call setfperm('Xlua_file', 'r-xr-xr-x')

  luafile Xlua_file
  call assert_equal('hello', luaeval('str'))
  call assert_equal(123, luaeval('num'))

  lua str, num = nil
endfunc

" Test :luafile %
func Test_luafile_percent()
  new Xlua_file
  append
    str, num = 'foo', 321.0
    print(string.format('str=%s, num=%d', str, num))
.
  w!
  luafile %
  let msg = split(execute('message'), "\n")[-1]
  call assert_equal('str=foo, num=321', msg)

  lua str, num = nil
  call delete('Xlua_file')
  bwipe!
endfunc

" Test :luafile with syntax error
func Test_luafile_error()
  new Xlua_file
  call writefile(['nil = 0' ], 'Xlua_file', 'D')
  call setfperm('Xlua_file', 'r-xr-xr-x')

  call assert_fails('luafile Xlua_file', "Xlua_file:1: unexpected symbol near 'nil'")

  bwipe!
endfunc

" Test :luafile printing a long string
func Test_luafile_print()
  new Xlua_file
  let lines =<< trim END
      local data = ''
      for i = 1, 130 do
	data = data .. 'xxxxx asd as as dad sad sad xz cxz  czxcxzczxc ad ad asd asd asd asd asd'
      end
      print(data)
  END
  call setline(1, lines)
  w
  luafile %

  call delete('Xlua_file')
  bwipe!
endfunc

" Test for dealing with strings containing newlines and null character
func Test_lua_string_with_newline()
  let x = execute('lua print("Hello\nWorld", 2)')
  call assert_equal("\nHello\nWorld 2", x)
  new
  lua k = vim.buffer(vim.eval('bufnr()'))
  lua k:insert("Hello\0World", 0)
  call assert_equal(["Hello\nWorld", ''], getline(1, '$'))
  close!
endfunc

func Test_lua_set_cursor()
  " Check that setting the cursor position works.
  new
  call setline(1, ['first line', 'second line'])
  normal gg
  lua << trim EOF
    w = vim.window()
    w.line = 1
    w.col = 5
  EOF
  call assert_equal([1, 5], [line('.'), col('.')])

  " Check that movement after setting cursor position keeps current column.
  normal j
  call assert_equal([2, 5], [line('.'), col('.')])
endfunc

" Test for various heredoc syntax
func Test_lua_heredoc()
  lua << END
vim.command('let s = "A"')
END
  lua <<
vim.command('let s ..= "B"')
.
  lua << trim END
    vim.command('let s ..= "C"')
  END
  lua << trim
    vim.command('let s ..= "D"')
  .
  lua << trim eof
    vim.command('let s ..= "E"')
  eof
  call assert_equal('ABCDE', s)
endfunc

" Test for adding, accessing and removing global variables using the vim.g
" Lua table
func Test_lua_global_var_table()
  " Access global variables with different types of values
  let g:Var1 = 10
  let g:Var2 = 'Hello'
  let g:Var3 = ['a', 'b']
  let g:Var4 = #{x: 'edit', y: 'run'}
  let g:Var5 = function('min')
  call assert_equal(10, luaeval('vim.g.Var1'))
  call assert_equal('Hello', luaeval('vim.g.Var2'))
  call assert_equal(['a', 'b'], luaeval('vim.g.Var3'))
  call assert_equal(#{x: 'edit', y: 'run'}, luaeval('vim.g.Var4'))
  call assert_equal(2, luaeval('vim.g.Var5')([5, 9, 2]))

  " Access list of dictionaries and dictionary of lists
  let g:Var1 = [#{a: 10}, #{b: 20}]
  let g:Var2 = #{p: [5, 6], q: [1.1, 2.2]}
  call assert_equal([#{a: 10}, #{b: 20}], luaeval('vim.g.Var1'))
  call assert_equal(#{p: [5, 6], q: [1.1, 2.2]}, luaeval('vim.g.Var2'))

  " Create new global variables with different types of values
  unlet g:Var1 g:Var2 g:Var3 g:Var4 g:Var5
  lua << trim END
    vim.g.Var1 = 34
    vim.g.Var2 = 'World'
    vim.g.Var3 = vim.list({'#', '$'})
    vim.g.Var4 = vim.dict({model='honda', year=2020})
    vim.g.Var5 = vim.funcref('max')
  END
  call assert_equal(34, g:Var1)
  call assert_equal('World', g:Var2)
  call assert_equal(['#', '$'], g:Var3)
  call assert_equal(#{model: 'honda', year: 2020}, g:Var4)
  call assert_equal(10, g:Var5([5, 10, 9]))

  " Create list of dictionaries and dictionary of lists
  unlet g:Var1 g:Var2
  lua << trim END
    vim.g.Var1 = vim.list({vim.dict({a=10}), vim.dict({b=20})})
    vim.g.Var2 = vim.dict({p=vim.list({5, 6}), q=vim.list({1.1, 2.2})})
  END
  call assert_equal([#{a: 10}, #{b: 20}], luaeval('vim.g.Var1'))
  call assert_equal(#{p: [5, 6], q: [1.1, 2.2]}, luaeval('vim.g.Var2'))

  " Modify a global variable with a list value or a dictionary value
  let g:Var1 = [10, 20]
  let g:Var2 = #{one: 'mercury', two: 'mars'}
  lua << trim END
    vim.g.Var1[2] = nil
    vim.g.Var1[3] = 15
    vim.g.Var2['two'] = nil
    vim.g.Var2['three'] = 'earth'
  END
  call assert_equal([10, 15], g:Var1)
  call assert_equal(#{one: 'mercury', three: 'earth'}, g:Var2)

  " Remove global variables with different types of values
  let g:Var1 = 10
  let g:Var2 = 'Hello'
  let g:Var3 = ['a', 'b']
  let g:Var4 = #{x: 'edit', y: 'run'}
  let g:Var5 = function('min')
  lua << trim END
    vim.g.Var1 = nil
    vim.g.Var2 = nil
    vim.g.Var3 = nil
    vim.g.Var4 = nil
    vim.g.Var5 = nil
  END
  call assert_false(exists('g:Var1'))
  call assert_false(exists('g:Var2'))
  call assert_false(exists('g:Var3'))
  call assert_false(exists('g:Var4'))
  call assert_false(exists('g:Var5'))

  " Try to modify and remove a locked global variable
  let g:Var1 = 10
  lockvar g:Var1
  call assert_fails('lua vim.g.Var1 = 20', 'variable is locked')
  call assert_fails('lua vim.g.Var1 = nil', 'variable is locked')
  unlockvar g:Var1
  let g:Var2 = [7, 14]
  lockvar 0 g:Var2
  lua vim.g.Var2[2] = nil
  lua vim.g.Var2[3] = 21
  call assert_fails('lua vim.g.Var2 = nil', 'variable is locked')
  call assert_equal([7, 21], g:Var2)
  lockvar 1 g:Var2
  call assert_fails('lua vim.g.Var2[2] = nil', 'list is locked')
  call assert_fails('lua vim.g.Var2[3] = 21', 'list is locked')
  unlockvar g:Var2

  let g:TestFunc = function('len')
  call assert_fails('lua vim.g.func = vim.g.TestFunc', ['E704:', 'Couldn''t add to dictionary'])
  unlet g:TestFunc

  " Attempt to access a non-existing global variable
  call assert_equal(v:null, luaeval('vim.g.NonExistingVar'))
  lua vim.g.NonExisting = nil

  unlet! g:Var1 g:Var2 g:Var3 g:Var4 g:Var5
endfunc

" Test for accessing and modifying predefined vim variables using the vim.v
" Lua table
func Test_lua_predefined_var_table()
  call assert_equal(v:progpath, luaeval('vim.v.progpath'))
  let v:errmsg = 'SomeError'
  call assert_equal('SomeError', luaeval('vim.v.errmsg'))
  lua vim.v.errmsg = 'OtherError'
  call assert_equal('OtherError', v:errmsg)
  lua vim.v.errmsg = 42
  call assert_equal('42', v:errmsg)
  call assert_fails('lua vim.v.errmsg = nil', 'variable is fixed')
  let v:oldfiles = ['one', 'two']
  call assert_equal(['one', 'two'], luaeval('vim.v.oldfiles'))
  lua vim.v.oldfiles = vim.list({})
  call assert_equal([], v:oldfiles)
  call assert_fails('lua vim.v.oldfiles = "a"',
        \ 'Setting v:oldfiles to value with wrong type')
  call assert_equal([], v:oldfiles)
  call assert_equal(v:null, luaeval('vim.v.null'))
  call assert_fails('lua vim.v.argv[1] = nil', 'list is locked')
  call assert_fails('lua vim.v.newvar = 1', 'Dictionary is locked')

  new
  call setline(1, ' foo foo foo')
  /foo
  call assert_equal([0, 1, 2, 0, 2], getcurpos())
  call assert_equal(1, v:searchforward)
  normal! n
  call assert_equal([0, 1, 6, 0, 6], getcurpos())
  lua vim.v.searchforward = 0
  call assert_equal(0, v:searchforward)
  normal! n
  call assert_equal([0, 1, 2, 0, 2], getcurpos())
  lua vim.v.searchforward = 1
  call assert_equal(1, v:searchforward)
  normal! n
  call assert_equal([0, 1, 6, 0, 6], getcurpos())
  bwipe!
endfunc

" Test for adding, accessing and modifying window-local variables using the
" vim.w Lua table
func Test_lua_window_var_table()
  " Access window variables with different types of values
  new
  let w:wvar1 = 10
  let w:wvar2 = 'edit'
  let w:wvar3 = 3.14
  let w:wvar4 = 0zdeadbeef
  let w:wvar5 = ['a', 'b']
  let w:wvar6 = #{action: 'run'}
  call assert_equal(10, luaeval('vim.w.wvar1'))
  call assert_equal('edit', luaeval('vim.w.wvar2'))
  call assert_equal(3.14, luaeval('vim.w.wvar3'))
  call assert_equal(0zdeadbeef, luaeval('vim.w.wvar4'))
  call assert_equal(['a', 'b'], luaeval('vim.w.wvar5'))
  call assert_equal(#{action: 'run'}, luaeval('vim.w.wvar6'))
  call assert_equal(v:null, luaeval('vim.w.NonExisting'))

  " modify a window variable
  lua vim.w.wvar2 = 'paste'
  call assert_equal('paste', w:wvar2)

  " change the type stored in a variable
  let w:wvar2 = [1, 2]
  lua vim.w.wvar2 = vim.dict({a=10, b=20})
  call assert_equal(#{a: 10, b: 20}, w:wvar2)

  " create a new window variable
  lua vim.w.wvar7 = vim.dict({a=vim.list({1, 2}), b=20})
  call assert_equal(#{a: [1, 2], b: 20}, w:wvar7)

  " delete a window variable
  lua vim.w.wvar2 = nil
  call assert_false(exists('w:wvar2'))

  new
  call assert_equal(v:null, luaeval('vim.w.wvar1'))
  call assert_equal(v:null, luaeval('vim.w.wvar2'))
  %bw!
endfunc

" Test for adding, accessing and modifying buffer-local variables using the
" vim.b Lua table
func Test_lua_buffer_var_table()
  " Access buffer variables with different types of values
  let b:bvar1 = 10
  let b:bvar2 = 'edit'
  let b:bvar3 = 3.14
  let b:bvar4 = 0zdeadbeef
  let b:bvar5 = ['a', 'b']
  let b:bvar6 = #{action: 'run'}
  call assert_equal(10, luaeval('vim.b.bvar1'))
  call assert_equal('edit', luaeval('vim.b.bvar2'))
  call assert_equal(3.14, luaeval('vim.b.bvar3'))
  call assert_equal(0zdeadbeef, luaeval('vim.b.bvar4'))
  call assert_equal(['a', 'b'], luaeval('vim.b.bvar5'))
  call assert_equal(#{action: 'run'}, luaeval('vim.b.bvar6'))
  call assert_equal(v:null, luaeval('vim.b.NonExisting'))

  " modify a buffer variable
  lua vim.b.bvar2 = 'paste'
  call assert_equal('paste', b:bvar2)

  " change the type stored in a variable
  let b:bvar2 = [1, 2]
  lua vim.b.bvar2 = vim.dict({a=10, b=20})
  call assert_equal(#{a: 10, b: 20}, b:bvar2)

  " create a new buffer variable
  lua vim.b.bvar7 = vim.dict({a=vim.list({1, 2}), b=20})
  call assert_equal(#{a: [1, 2], b: 20}, b:bvar7)

  " delete a buffer variable
  lua vim.b.bvar2 = nil
  call assert_false(exists('b:bvar2'))

  new
  call assert_equal(v:null, luaeval('vim.b.bvar1'))
  call assert_equal(v:null, luaeval('vim.b.bvar2'))
  %bw!
endfunc

" Test for adding, accessing and modifying tabpage-local variables using the
" vim.t Lua table
func Test_lua_tabpage_var_table()
  " Access tabpage variables with different types of values
  let t:tvar1 = 10
  let t:tvar2 = 'edit'
  let t:tvar3 = 3.14
  let t:tvar4 = 0zdeadbeef
  let t:tvar5 = ['a', 'b']
  let t:tvar6 = #{action: 'run'}
  call assert_equal(10, luaeval('vim.t.tvar1'))
  call assert_equal('edit', luaeval('vim.t.tvar2'))
  call assert_equal(3.14, luaeval('vim.t.tvar3'))
  call assert_equal(0zdeadbeef, luaeval('vim.t.tvar4'))
  call assert_equal(['a', 'b'], luaeval('vim.t.tvar5'))
  call assert_equal(#{action: 'run'}, luaeval('vim.t.tvar6'))
  call assert_equal(v:null, luaeval('vim.t.NonExisting'))

  " modify a tabpage variable
  lua vim.t.tvar2 = 'paste'
  call assert_equal('paste', t:tvar2)

  " change the type stored in a variable
  let t:tvar2 = [1, 2]
  lua vim.t.tvar2 = vim.dict({a=10, b=20})
  call assert_equal(#{a: 10, b: 20}, t:tvar2)

  " create a new tabpage variable
  lua vim.t.tvar7 = vim.dict({a=vim.list({1, 2}), b=20})
  call assert_equal(#{a: [1, 2], b: 20}, t:tvar7)

  " delete a tabpage variable
  lua vim.t.tvar2 = nil
  call assert_false(exists('t:tvar2'))

  tabnew
  call assert_equal(v:null, luaeval('vim.t.tvar1'))
  call assert_equal(v:null, luaeval('vim.t.tvar2'))
  %bw!
endfunc

" Test for vim.version()
func Test_lua_vim_version()
  lua << trim END
    vimver = vim.version()
    vimver_n = vimver.major * 100 + vimver.minor
  END
  call assert_equal(v:version, luaeval('vimver_n'))
endfunc

" Test for running multiple commands using vim.command()
func Test_lua_multiple_commands()
  lua << trim END
    vim.command([[
        let Var1 = []
        for i in range(3)
          let Var1 += [#{name: 'x'}]
        endfor
        augroup Luagroup
          autocmd!
          autocmd User Luatest echo 'Hello'
        augroup END
      ]])
  END
  call assert_equal([{'name': 'x'}, {'name': 'x'}, {'name': 'x'}], Var1)
  call assert_true(exists('#Luagroup'))
  call assert_true(exists('#Luagroup#User#Luatest'))
  augroup Luagroup
    autocmd!
  augroup END
  augroup! Luagroup
endfunc

func Test_lua_debug()
  CheckRunVimInTerminal

  let buf = RunVimInTerminal('', {'rows': 10})
  call term_sendkeys(buf, ":lua debug.debug()\n")
  call WaitForAssert({-> assert_equal('lua_debug> ', term_getline(buf, 10))})

  call term_sendkeys(buf, "foo = 42\n")
  call WaitForAssert({-> assert_equal('lua_debug> foo = 42', term_getline(buf, 9))})
  call WaitForAssert({-> assert_equal('lua_debug> ',         term_getline(buf, 10))})

  call term_sendkeys(buf, "print(foo)\n")
  call WaitForAssert({-> assert_equal('lua_debug> print(foo)', term_getline(buf, 8))})
  call WaitForAssert({-> assert_equal('42',                    term_getline(buf, 9))})
  call WaitForAssert({-> assert_equal('lua_debug> ',           term_getline(buf, 10))})

  call term_sendkeys(buf, "-\n")
  call WaitForAssert({-> assert_equal("(debug command):1: unexpected symbol near '-'",
  \                                                  term_getline(buf, 9))})
  call WaitForAssert({-> assert_equal('lua_debug> ', term_getline(buf, 10))})

  call term_sendkeys(buf, "cont\n")
  call WaitForAssert({-> assert_match(' All$', term_getline(buf, 10))})

  " Entering an empty line also exits the debugger.
  call term_sendkeys(buf, ":lua debug.debug()\n")
  call WaitForAssert({-> assert_equal('lua_debug> ', term_getline(buf, 10))})
  call term_sendkeys(buf, "\n")
  call WaitForAssert({-> assert_match(' All$', term_getline(buf, 10))})

  call StopVimInTerminal(buf)
endfunc

" Test for a crash when a Lua funcref is invoked with parameters from Vim
func Test_lua_funcref_with_params()
  let Lua_funcref = luaeval('function(d) local s = "in Lua callback" end')
  call Lua_funcref({'a' : 'b'})
  call assert_true(v:true)
endfunc

" vim: shiftwidth=2 sts=2 expandtab