summaryrefslogtreecommitdiffstats
path: root/src/testdir/test_scroll_opt.vim
blob: 3467760740e1e05688a9eff17d802b6ae1237ef0 (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
" Test for 'scroll', 'scrolloff', 'smoothscroll', etc.

source check.vim
source screendump.vim
source mouse.vim

func Test_reset_scroll()
  let scr = &l:scroll

  setlocal scroll=1
  setlocal scroll&
  call assert_equal(scr, &l:scroll)

  setlocal scroll=1
  setlocal scroll=0
  call assert_equal(scr, &l:scroll)

  try
    execute 'setlocal scroll=' . (winheight(0) + 1)
    " not reached
    call assert_false(1)
  catch
    call assert_exception('E49:')
  endtry

  split

  let scr = &l:scroll

  setlocal scroll=1
  setlocal scroll&
  call assert_equal(scr, &l:scroll)

  setlocal scroll=1
  setlocal scroll=0
  call assert_equal(scr, &l:scroll)

  quit!
endfunc

func Test_scolloff_even_line_count()
  new
  resize 6
  setlocal scrolloff=3
  call setline(1, range(20))
  normal 2j
  call assert_equal(1, getwininfo(win_getid())[0].topline)
  normal j
  call assert_equal(1, getwininfo(win_getid())[0].topline)
  normal j
  call assert_equal(2, getwininfo(win_getid())[0].topline)
  normal j
  call assert_equal(3, getwininfo(win_getid())[0].topline)

  bwipe!
endfunc

func Test_mouse_scroll_inactive_with_cursorbind()
  for scb in [0, 1]
    for so in [0, 1, 2]
      let msg = $'scb={scb} so={so}'

      new | only
      let w1 = win_getid()
      setlocal cursorbind
      let &l:scb = scb
      let &l:so = so
      call setline(1, range(101, 109))
      rightbelow vnew
      let w2 = win_getid()
      setlocal cursorbind
      let &l:scb = scb
      let &l:so = so
      call setline(1, range(101, 109))

      normal! $
      call assert_equal(3, col('.', w1), msg)
      call assert_equal(3, col('.', w2), msg)
      call test_setmouse(1, 1)
      call feedkeys("\<ScrollWheelDown>", 'xt')
      call assert_equal(4, line('w0', w1), msg)
      call assert_equal(4 + so, line('.', w1), msg)
      call assert_equal(1, line('w0', w2), msg)
      call assert_equal(1, line('.', w2), msg)
      call feedkeys("\<ScrollWheelDown>", 'xt')
      call assert_equal(7, line('w0', w1), msg)
      call assert_equal(7 + so, line('.', w1), msg)
      call assert_equal(1, line('w0', w2), msg)
      call assert_equal(1, line('.', w2), msg)
      call feedkeys("\<ScrollWheelUp>", 'xt')
      call assert_equal(4, line('w0', w1), msg)
      call assert_equal(7 + so, line('.', w1), msg)
      call assert_equal(1, line('w0', w2), msg)
      call assert_equal(1, line('.', w2), msg)
      call feedkeys("\<ScrollWheelUp>", 'xt')
      call assert_equal(1, line('w0', w1), msg)
      call assert_equal(7 + so, line('.', w1), msg)
      call assert_equal(1, line('w0', w2), msg)
      call assert_equal(1, line('.', w2), msg)
      normal! 0
      call assert_equal(1, line('.', w1), msg)
      call assert_equal(1, col('.', w1), msg)
      call assert_equal(1, line('.', w2), msg)
      call assert_equal(1, col('.', w2), msg)

      bwipe!
      bwipe!
    endfor
  endfor
endfunc

func Test_CtrlE_CtrlY_stop_at_end()
  enew
  call setline(1, ['one', 'two'])
  set number
  exe "normal \<C-Y>"
  call assert_equal(["  1 one   "], ScreenLines(1, 10))
  exe "normal \<C-E>\<C-E>\<C-E>"
  call assert_equal(["  2 two   "], ScreenLines(1, 10))

  bwipe!
  set nonumber
endfunc

func Test_smoothscroll_CtrlE_CtrlY()
  CheckScreendump

  let lines =<< trim END
      vim9script
      setline(1, [
        'line one',
        'word '->repeat(20),
        'line three',
        'long word '->repeat(7),
        'line',
        'line',
        'line',
      ])
      set smoothscroll
      :5
  END
  call writefile(lines, 'XSmoothScroll', 'D')
  let buf = RunVimInTerminal('-S XSmoothScroll', #{rows: 12, cols: 40})

  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_1', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_2', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_3', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_4', {})

  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_5', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_6', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_7', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_8', {})

  if has('folding')
    call term_sendkeys(buf, ":set foldmethod=indent\<CR>")
    " move the cursor so we can reuse the same dumps
    call term_sendkeys(buf, "5G")
    call term_sendkeys(buf, "\<C-E>")
    call VerifyScreenDump(buf, 'Test_smoothscroll_1', {})
    call term_sendkeys(buf, "\<C-E>")
    call VerifyScreenDump(buf, 'Test_smoothscroll_2', {})
    call term_sendkeys(buf, "7G")
    call term_sendkeys(buf, "\<C-Y>")
    call VerifyScreenDump(buf, 'Test_smoothscroll_7', {})
    call term_sendkeys(buf, "\<C-Y>")
    call VerifyScreenDump(buf, 'Test_smoothscroll_8', {})
  endif

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_multibyte()
  CheckScreendump

  let lines =<< trim END
      set scrolloff=0 smoothscroll
      call setline(1, [repeat('ϛ', 45), repeat('2', 36)])
      exe "normal G35l\<C-E>k"
  END
  call writefile(lines, 'XSmoothMultibyte', 'D')
  let buf = RunVimInTerminal('-S XSmoothMultibyte', #{rows: 6, cols: 40})
  call VerifyScreenDump(buf, 'Test_smoothscroll_multi_1', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_number()
  CheckScreendump

  let lines =<< trim END
      vim9script
      setline(1, [
        'one ' .. 'word '->repeat(20),
        'two ' .. 'long word '->repeat(7),
        'line',
        'line',
        'line',
      ])
      set smoothscroll
      set splitkeep=topline
      set number cpo+=n
      :3

      def g:DoRel()
        set number relativenumber scrolloff=0
        :%del
        setline(1, [
          'one',
          'very long text '->repeat(12),
          'three',
        ])
        exe "normal 2Gzt\<C-E>"
      enddef
  END
  call writefile(lines, 'XSmoothNumber', 'D')
  let buf = RunVimInTerminal('-S XSmoothNumber', #{rows: 12, cols: 40})

  call VerifyScreenDump(buf, 'Test_smooth_number_1', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_number_2', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_number_3', {})

  call term_sendkeys(buf, ":set cpo-=n\<CR>")
  call VerifyScreenDump(buf, 'Test_smooth_number_4', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_number_5', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_number_6', {})

  call term_sendkeys(buf, ":botright split\<CR>gg")
  call VerifyScreenDump(buf, 'Test_smooth_number_7', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_number_8', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_number_9', {})
  call term_sendkeys(buf, ":close\<CR>")

  call term_sendkeys(buf, ":call DoRel()\<CR>")
  call VerifyScreenDump(buf, 'Test_smooth_number_10', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_list()
  CheckScreendump

  let lines =<< trim END
      vim9script
      set smoothscroll scrolloff=0
      set list
      setline(1, [
        'one',
        'very long text '->repeat(12),
        'three',
      ])
      exe "normal 2Gzt\<C-E>"
  END
  call writefile(lines, 'XSmoothList', 'D')
  let buf = RunVimInTerminal('-S XSmoothList', #{rows: 8, cols: 40})

  call VerifyScreenDump(buf, 'Test_smooth_list_1', {})

  call term_sendkeys(buf, ":set listchars+=precedes:#\<CR>")
  call VerifyScreenDump(buf, 'Test_smooth_list_2', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_diff_mode()
  CheckScreendump

  let lines =<< trim END
      vim9script
      var text = 'just some text here'
      setline(1, text)
      set smoothscroll
      diffthis
      new
      setline(1, text)
      set smoothscroll
      diffthis
  END
  call writefile(lines, 'XSmoothDiff', 'D')
  let buf = RunVimInTerminal('-S XSmoothDiff', #{rows: 8})

  call VerifyScreenDump(buf, 'Test_smooth_diff_1', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_diff_1', {})
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_diff_1', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_wrap_scrolloff_zero()
  CheckScreendump

  let lines =<< trim END
      vim9script
      setline(1, ['Line' .. (' with some text'->repeat(7))]->repeat(7))
      set smoothscroll scrolloff=0
      :3
  END
  call writefile(lines, 'XSmoothWrap', 'D')
  let buf = RunVimInTerminal('-S XSmoothWrap', #{rows: 8, cols: 40})

  call VerifyScreenDump(buf, 'Test_smooth_wrap_1', {})

  " moving cursor down - whole bottom line shows
  call term_sendkeys(buf, "j")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_2', {})

  call term_sendkeys(buf, "\<C-E>j")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_3', {})

  call term_sendkeys(buf, "G")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_4', {})

  call term_sendkeys(buf, "4\<C-Y>G")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_4', {})

  " moving cursor up right after the <<< marker - no need to show whole line
  call term_sendkeys(buf, "2gj3l2k")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_5', {})

  " moving cursor up where the <<< marker is - whole top line shows
  call term_sendkeys(buf, "2j02k")
  call VerifyScreenDump(buf, 'Test_smooth_wrap_6', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_wrap_long_line()
  CheckScreendump

  let lines =<< trim END
      vim9script
      setline(1, ['one', 'two', 'Line' .. (' with lots of text'->repeat(30)) .. ' end', 'four'])
      set smoothscroll scrolloff=0
      normal 3G10|zt
  END
  call writefile(lines, 'XSmoothWrap', 'D')
  let buf = RunVimInTerminal('-S XSmoothWrap', #{rows: 6, cols: 40})
  call VerifyScreenDump(buf, 'Test_smooth_long_1', {})

  " scrolling up, cursor moves screen line down
  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_long_2', {})
  call term_sendkeys(buf, "5\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_long_3', {})

  " scrolling down, cursor moves screen line up
  call term_sendkeys(buf, "5\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_long_4', {})
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_long_5', {})

  " 'scrolloff' set to 1, scrolling up, cursor moves screen line down
  call term_sendkeys(buf, ":set scrolloff=1\<CR>")
  call term_sendkeys(buf, "10|\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_long_6', {})

  " 'scrolloff' set to 1, scrolling down, cursor moves screen line up
  call term_sendkeys(buf, "\<C-E>")
  call term_sendkeys(buf, "gjgj")
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_long_7', {})

  " 'scrolloff' set to 2, scrolling up, cursor moves screen line down
  call term_sendkeys(buf, ":set scrolloff=2\<CR>")
  call term_sendkeys(buf, "10|\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_long_8', {})

  " 'scrolloff' set to 2, scrolling down, cursor moves screen line up
  call term_sendkeys(buf, "\<C-E>")
  call term_sendkeys(buf, "gj")
  call term_sendkeys(buf, "\<C-Y>")
  call VerifyScreenDump(buf, 'Test_smooth_long_9', {})

  " 'scrolloff' set to 0, move cursor down one line.
  " Cursor should move properly, and since this is a really long line, it will
  " be put on top of the screen.
  call term_sendkeys(buf, ":set scrolloff=0\<CR>")
  call term_sendkeys(buf, "0j")
  call VerifyScreenDump(buf, 'Test_smooth_long_10', {})

  " Test zt/zz/zb that they work properly when a long line is above it
  call term_sendkeys(buf, "zt")
  call VerifyScreenDump(buf, 'Test_smooth_long_11', {})
  call term_sendkeys(buf, "zz")
  call VerifyScreenDump(buf, 'Test_smooth_long_12', {})
  call term_sendkeys(buf, "zb")
  call VerifyScreenDump(buf, 'Test_smooth_long_13', {})

  " Repeat the step and move the cursor down again.
  " This time, use a shorter long line that is barely long enough to span more
  " than one window. Note that the cursor is at the bottom this time because
  " Vim prefers to do so if we are scrolling a few lines only.
  call term_sendkeys(buf, ":call setline(1, ['one', 'two', 'Line' .. (' with lots of text'->repeat(10)) .. ' end', 'four'])\<CR>")
  " Currently visible lines were replaced, test that the lines and cursor
  " are correctly displayed.
  call VerifyScreenDump(buf, 'Test_smooth_long_14', {})
  call term_sendkeys(buf, "3Gzt")
  call term_sendkeys(buf, "j")
  call VerifyScreenDump(buf, 'Test_smooth_long_15', {})

  " Repeat the step but this time start it when the line is smooth-scrolled by
  " one line. This tests that the offset calculation is still correct and
  " still end up scrolling down to the next line with cursor at bottom of
  " screen.
  call term_sendkeys(buf, "3Gzt")
  call term_sendkeys(buf, "\<C-E>j")
  call VerifyScreenDump(buf, 'Test_smooth_long_16', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_one_long_line()
  CheckScreendump

  let lines =<< trim END
      vim9script
      setline(1, 'with lots of text '->repeat(7))
      set smoothscroll scrolloff=0
  END
  call writefile(lines, 'XSmoothOneLong', 'D')
  let buf = RunVimInTerminal('-S XSmoothOneLong', #{rows: 6, cols: 40})
  call VerifyScreenDump(buf, 'Test_smooth_one_long_1', {})

  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_one_long_2', {})

  call term_sendkeys(buf, "0")
  call VerifyScreenDump(buf, 'Test_smooth_one_long_1', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_long_line_showbreak()
  CheckScreendump

  let lines =<< trim END
      vim9script
      # a line that spans four screen lines
      setline(1, 'with lots of text in one line '->repeat(6))
      set smoothscroll scrolloff=0 showbreak=+++\ 
  END
  call writefile(lines, 'XSmoothLongShowbreak', 'D')
  let buf = RunVimInTerminal('-S XSmoothLongShowbreak', #{rows: 6, cols: 40})
  call VerifyScreenDump(buf, 'Test_smooth_long_showbreak_1', {})

  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_long_showbreak_2', {})

  call term_sendkeys(buf, "0")
  call VerifyScreenDump(buf, 'Test_smooth_long_showbreak_1', {})

  call StopVimInTerminal(buf)
endfunc

" Check that 'smoothscroll' marker is drawn over double-width char correctly.
" Run with multiple encodings.
func Test_smoothscroll_marker_over_double_width()
  " Run this in a separate Vim instance to avoid messing up.
  let after =<< trim [CODE]
    scriptencoding utf-8
    call setline(1, 'a'->repeat(&columns) .. '口'->repeat(10))
    setlocal smoothscroll
    redraw
    exe "norm \<C-E>"
    redraw
    " Check the chars one by one. Don't check the whole line concatenated.
    call assert_equal('<', screenstring(1, 1))
    call assert_equal('<', screenstring(1, 2))
    call assert_equal('<', screenstring(1, 3))
    call assert_equal(' ', screenstring(1, 4))
    call assert_equal('口', screenstring(1, 5))
    call assert_equal('口', screenstring(1, 7))
    call assert_equal('口', screenstring(1, 9))
    call assert_equal('口', screenstring(1, 11))
    call assert_equal('口', screenstring(1, 13))
    call assert_equal('口', screenstring(1, 15))
    call writefile(v:errors, 'Xresult')
    qall!
  [CODE]

  let encodings = ['utf-8', 'cp932', 'cp936', 'cp949', 'cp950']
  if !has('win32')
    let encodings += ['euc-jp']
  endif
  for enc in encodings
    let msg = 'enc=' .. enc
    if RunVim([], after, $'--clean --cmd "set encoding={enc}"')
      call assert_equal([], readfile('Xresult'), msg)
    endif
    call delete('Xresult')
  endfor
endfunc

" Same as the test above, but check the text actually shown on screen.
" Only run with UTF-8 encoding.
func Test_smoothscroll_marker_over_double_width_dump()
  CheckScreendump

  let lines =<< trim END
    call setline(1, 'a'->repeat(&columns) .. '口'->repeat(10))
    setlocal smoothscroll
  END
  call writefile(lines, 'XSmoothMarkerOverDoubleWidth', 'D')
  let buf = RunVimInTerminal('-S XSmoothMarkerOverDoubleWidth', #{rows: 6, cols: 40})
  call VerifyScreenDump(buf, 'Test_smooth_marker_over_double_width_1', {})

  call term_sendkeys(buf, "\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_marker_over_double_width_2', {})

  call StopVimInTerminal(buf)
endfunc

func s:check_col_calc(win_col, win_line, buf_col)
  call assert_equal(a:win_col, wincol())
  call assert_equal(a:win_line, winline())
  call assert_equal(a:buf_col, col('.'))
endfunc

" Test that if the current cursor is on a smooth scrolled line, we correctly
" reposition it. Also check that we don't miscalculate the values by checking
" the consistency between wincol() and col('.') as they are calculated
" separately in code.
func Test_smoothscroll_cursor_position()
  call NewWindow(10, 20)
  setl smoothscroll wrap
  call setline(1, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

  call s:check_col_calc(1, 1, 1)
  exe "normal \<C-E>"

  " Move down another line to avoid blocking the <<< display
  call s:check_col_calc(1, 2, 41)
  exe "normal \<C-Y>"
  call s:check_col_calc(1, 3, 41)

  " Test "g0/g<Home>"
  exe "normal gg\<C-E>"
  norm $gkg0
  call s:check_col_calc(1, 2, 21)

  " Test moving the cursor behind the <<< display with 'virtualedit'
  set virtualedit=all
  exe "normal \<C-E>3lgkh"
  call s:check_col_calc(3, 2, 23)
  set virtualedit&

  normal gg3l
  exe "normal \<C-E>"

  " Move down only 1 line when we are out of the range of the <<< display
  call s:check_col_calc(4, 1, 24)
  exe "normal \<C-Y>"
  call s:check_col_calc(4, 2, 24)
  normal ggg$
  exe "normal \<C-E>"
  call s:check_col_calc(20, 1, 40)
  exe "normal \<C-Y>"
  call s:check_col_calc(20, 2, 40)
  normal gg

  " Test number, where we have indented lines
  setl number
  call s:check_col_calc(5, 1, 1)
  exe "normal \<C-E>"

  " Move down only 1 line when the <<< display is on the number column
  call s:check_col_calc(5, 1, 17)
  exe "normal \<C-Y>"
  call s:check_col_calc(5, 2, 17)
  normal ggg$
  exe "normal \<C-E>"
  call s:check_col_calc(20, 1, 32)
  exe "normal \<C-Y>"
  call s:check_col_calc(20, 2, 32)
  normal gg

  setl numberwidth=1

  " Move down another line when numberwidth is too short to cover the whole
  " <<< display
  call s:check_col_calc(3, 1, 1)
  exe "normal \<C-E>"
  call s:check_col_calc(3, 2, 37)
  exe "normal \<C-Y>"
  call s:check_col_calc(3, 3, 37)
  normal ggl

  " Only move 1 line down when we are just past the <<< display
  call s:check_col_calc(4, 1, 2)
  exe "normal \<C-E>"
  call s:check_col_calc(4, 1, 20)
  exe "normal \<C-Y>"
  call s:check_col_calc(4, 2, 20)
  normal gg
  setl numberwidth&

  " Test number + showbreak, so test that the additional indentation works
  setl number showbreak=+++
  call s:check_col_calc(5, 1, 1)
  exe "normal \<C-E>"
  call s:check_col_calc(8, 1, 17)
  exe "normal \<C-Y>"
  call s:check_col_calc(8, 2, 17)
  normal gg

  " Test number + cpo+=n mode, where wrapped lines aren't indented
  setl number cpo+=n showbreak=
  call s:check_col_calc(5, 1, 1)
  exe "normal \<C-E>"
  call s:check_col_calc(1, 2, 37)
  exe "normal \<C-Y>"
  call s:check_col_calc(1, 3, 37)
  normal gg

  " Test list + listchars "precedes", where there is always 1 overlap
  " regardless of number and cpo-=n.
  setl number list listchars=precedes:< cpo-=n
  call s:check_col_calc(5, 1, 1)
  exe "normal 3|\<C-E>h"
  call s:check_col_calc(6, 1, 18)
  norm h
  call s:check_col_calc(5, 2, 17)
  normal gg

  bwipe!
endfunc

func Test_smoothscroll_cursor_scrolloff()
  call NewWindow(10, 20)
  setl smoothscroll wrap
  setl scrolloff=3

  " 120 chars are 6 screen lines
  call setline(1, "abcdefghijklmnopqrstABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrstABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrstABCDEFGHIJKLMNOPQRST")
  call setline(2, "below")

  call s:check_col_calc(1, 1, 1)

  " CTRL-E shows "<<<DEFG...", cursor move four lines down
  exe "normal \<C-E>"
  call s:check_col_calc(1, 4, 81)

  " cursor on start of second line, "gk" moves into first line, skipcol doesn't
  " change
  exe "normal G0gk"
  call s:check_col_calc(1, 5, 101)

  " move cursor left one window width worth, scrolls one screen line
  exe "normal 20h"
  call s:check_col_calc(1, 5, 81)

  " move cursor left one window width worth, scrolls one screen line
  exe "normal 20h"
  call s:check_col_calc(1, 4, 61)

  " cursor on last line, "gk" should not cause a scroll
  set scrolloff=0
  normal G0
  call s:check_col_calc(1, 7, 1)
  normal gk
  call s:check_col_calc(1, 6, 101)

  bwipe!
endfunc


" Test that mouse picking is still accurate when we have smooth scrolled lines
func Test_smoothscroll_mouse_pos()
  CheckNotGui
  CheckUnix

  let save_mouse = &mouse
  let save_term = &term
  let save_ttymouse = &ttymouse
  set mouse=a term=xterm ttymouse=xterm2

  call NewWindow(10, 20)
  setl smoothscroll wrap
  " First line will wrap to 3 physical lines. 2nd/3rd lines are short lines.
  call setline(1, ["abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ", "line 2", "line 3"])

  func s:check_mouse_click(row, col, buf_row, buf_col)
    call MouseLeftClick(a:row, a:col)

    call assert_equal(a:col, wincol())
    call assert_equal(a:row, winline())
    call assert_equal(a:buf_row, line('.'))
    call assert_equal(a:buf_col, col('.'))
  endfunc

  " Check that clicking without scroll works first.
  call s:check_mouse_click(3, 5, 1, 45)
  call s:check_mouse_click(4, 1, 2, 1)
  call s:check_mouse_click(4, 6, 2, 6)
  call s:check_mouse_click(5, 1, 3, 1)
  call s:check_mouse_click(5, 6, 3, 6)

  " Smooth scroll, and checks that this didn't mess up mouse clicking
  exe "normal \<C-E>"
  call s:check_mouse_click(2, 5, 1, 45)
  call s:check_mouse_click(3, 1, 2, 1)
  call s:check_mouse_click(3, 6, 2, 6)
  call s:check_mouse_click(4, 1, 3, 1)
  call s:check_mouse_click(4, 6, 3, 6)

  exe "normal \<C-E>"
  call s:check_mouse_click(1, 5, 1, 45)
  call s:check_mouse_click(2, 1, 2, 1)
  call s:check_mouse_click(2, 6, 2, 6)
  call s:check_mouse_click(3, 1, 3, 1)
  call s:check_mouse_click(3, 6, 3, 6)

  " Make a new first line 11 physical lines tall so it's taller than window
  " height, to test overflow calculations with really long lines wrapping.
  normal gg
  call setline(1, "12345678901234567890"->repeat(11))
  exe "normal 6\<C-E>"
  call s:check_mouse_click(5, 1, 1, 201)
  call s:check_mouse_click(6, 1, 2, 1)
  call s:check_mouse_click(7, 1, 3, 1)

  let &mouse = save_mouse
  let &term = save_term
  let &ttymouse = save_ttymouse
endfunc

" this was dividing by zero
func Test_smoothscroll_zero_width()
  CheckScreendump

  let lines =<< trim END
      winsize 0 0
      vsplit
      vsplit
      vsplit
      vsplit
      vsplit
      sil norm H
      set wrap
      set smoothscroll
      set number
  END
  call writefile(lines, 'XSmoothScrollZero', 'D')
  let buf = RunVimInTerminal('-u NONE -i NONE -n -m -X -Z -e -s -S XSmoothScrollZero', #{rows: 6, cols: 60, wait_for_ruler: 0})
  call VerifyScreenDump(buf, 'Test_smoothscroll_zero_1', {})

  call term_sendkeys(buf, ":sil norm \<C-V>\<C-W>\<C-V>\<C-N>\<CR>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_zero_2', {})

  call StopVimInTerminal(buf)
endfunc

" this was unnecessarily inserting lines
func Test_smoothscroll_ins_lines()
  CheckScreendump

  let lines =<< trim END
      set wrap
      set smoothscroll
      set scrolloff=0
      set conceallevel=2
      call setline(1, [
        \'line one' .. 'with lots of text in one line '->repeat(2),
        \'line two',
        \'line three',
        \'line four',
        \'line five'
      \])
  END
  call writefile(lines, 'XSmoothScrollInsLines', 'D')
  let buf = RunVimInTerminal('-S XSmoothScrollInsLines', #{rows: 6, cols: 40})

  call term_sendkeys(buf, "\<C-E>gjgk")
  call VerifyScreenDump(buf, 'Test_smooth_ins_lines', {})

  call StopVimInTerminal(buf)
endfunc

" this placed the cursor in the command line
func Test_smoothscroll_cursormoved_line()
  CheckScreendump

  let lines =<< trim END
      set smoothscroll
      call setline(1, [
        \'',
        \'_'->repeat(&lines * &columns),
        \(('_')->repeat(&columns - 2) .. 'xxx')->repeat(2)
      \])
      autocmd CursorMoved * eval [line('w0'), line('w$')]
      call search('xxx')
  END
  call writefile(lines, 'XSmoothCursorMovedLine', 'D')
  let buf = RunVimInTerminal('-S XSmoothCursorMovedLine', #{rows: 6})

  call VerifyScreenDump(buf, 'Test_smooth_cursormoved_line', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_eob()
  CheckScreendump

  let lines =<< trim END
      set smoothscroll
      call setline(1, ['']->repeat(100))
      norm G
  END
  call writefile(lines, 'XSmoothEob', 'D')
  let buf = RunVimInTerminal('-S XSmoothEob', #{rows: 10})

  " does not scroll halfway when scrolling to end of buffer
  call VerifyScreenDump(buf, 'Test_smooth_eob_1', {})

  " cursor is not placed below window
  call term_sendkeys(buf, ":call setline(92, 'a'->repeat(100))\<CR>\<C-B>G")
  call VerifyScreenDump(buf, 'Test_smooth_eob_2', {})

  call StopVimInTerminal(buf)
endfunc

" skipcol should not reset when doing incremental search on the same word
func Test_smoothscroll_incsearch()
  CheckScreendump

  let lines =<< trim END
      set smoothscroll number scrolloff=0 incsearch
      call setline(1, repeat([''], 20))
      call setline(11, repeat('a', 100))
      call setline(14, 'bbbb')
  END
  call writefile(lines, 'XSmoothIncsearch', 'D')
  let buf = RunVimInTerminal('-S XSmoothIncsearch', #{rows: 8, cols: 40})

  call term_sendkeys(buf, "/b")
  call VerifyScreenDump(buf, 'Test_smooth_incsearch_1', {})
  call term_sendkeys(buf, "b")
  call VerifyScreenDump(buf, 'Test_smooth_incsearch_2', {})
  call term_sendkeys(buf, "b")
  call VerifyScreenDump(buf, 'Test_smooth_incsearch_3', {})
  call term_sendkeys(buf, "b")
  call VerifyScreenDump(buf, 'Test_smooth_incsearch_4', {})
  call term_sendkeys(buf, "\<CR>")

  call StopVimInTerminal(buf)
endfunc

" Test scrolling multiple lines and stopping at non-zero skipcol.
func Test_smoothscroll_multi_skipcol()
  CheckScreendump

  let lines =<< trim END
      setlocal cursorline scrolloff=0 smoothscroll
      call setline(1, repeat([''], 8))
      call setline(3, repeat('a', 50))
      call setline(4, repeat('a', 50))
      call setline(7, 'bbb')
      call setline(8, 'ccc')
      redraw
  END
  call writefile(lines, 'XSmoothMultiSkipcol', 'D')
  let buf = RunVimInTerminal('-S XSmoothMultiSkipcol', #{rows: 10, cols: 40})
  call VerifyScreenDump(buf, 'Test_smooth_multi_skipcol_1', {})

  call term_sendkeys(buf, "3\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_multi_skipcol_2', {})

  call term_sendkeys(buf, "2\<C-E>")
  call VerifyScreenDump(buf, 'Test_smooth_multi_skipcol_3', {})

  call StopVimInTerminal(buf)
endfunc

" this was dividing by zero bug in scroll_cursor_bot
func Test_smoothscroll_zero_width_scroll_cursor_bot()
  CheckScreendump

  let lines =<< trim END
      silent normal yy
      silent normal 19p
      set cpoptions+=n
      vsplit
      vertical resize 0
      set foldcolumn=1
      set number
      set smoothscroll
      silent normal 20G
  END
  call writefile(lines, 'XSmoothScrollZeroBot', 'D')
  let buf = RunVimInTerminal('-u NONE -S XSmoothScrollZeroBot', #{rows: 19})
  call VerifyScreenDump(buf, 'Test_smoothscroll_zero_bot', {})

  call StopVimInTerminal(buf)
endfunc

" scroll_cursor_top() should reset skipcol when it changes topline
func Test_smoothscroll_cursor_top()
  CheckScreendump

  let lines =<< trim END
      set smoothscroll scrolloff=2
      new | 11resize | wincmd j
      call setline(1, ['line1', 'line2', 'line3'->repeat(20), 'line4'])
      exe "norm G3\<C-E>k"
  END
  call writefile(lines, 'XSmoothScrollCursorTop', 'D')
  let buf = RunVimInTerminal('-u NONE -S XSmoothScrollCursorTop', #{rows: 12, cols: 40})
  call VerifyScreenDump(buf, 'Test_smoothscroll_cursor_top', {})

  call StopVimInTerminal(buf)
endfunc

" Division by zero, shouldn't crash
func Test_smoothscroll_crash()
  CheckScreendump

  let lines =<< trim END
      20 new
      vsp
      put =repeat('aaaa', 20)
      set nu fdc=1  smoothscroll cpo+=n
      vert resize 0
      exe "norm! 0\<c-e>"
  END
  call writefile(lines, 'XSmoothScrollCrash', 'D')
  let buf = RunVimInTerminal('-u NONE -S XSmoothScrollCrash', #{rows: 12, cols: 40})
  call term_sendkeys(buf, "2\<C-E>\<C-L>")

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_insert_bottom()
  CheckScreendump

  let lines =<< trim END
    call setline(1, repeat([repeat('A very long line ...', 10)], 5))
    set wrap smoothscroll scrolloff=0
  END
  call writefile(lines, 'XSmoothScrollInsertBottom', 'D')
  let buf = RunVimInTerminal('-u NONE -S XSmoothScrollInsertBottom', #{rows: 9, cols: 40})
  call term_sendkeys(buf, "Go123456789\<CR>")
  call VerifyScreenDump(buf, 'Test_smoothscroll_insert_bottom', {})

  call StopVimInTerminal(buf)
endfunc

func Test_smoothscroll_in_zero_width_window()
  set cpo+=n number smoothscroll
  set winwidth=99999 winminwidth=0

  vsplit
  call assert_equal(0, winwidth(winnr('#')))
  call win_execute(win_getid(winnr('#')), "norm! \<C-Y>")

  only!
  set winwidth& winminwidth&
  set cpo-=n nonumber nosmoothscroll
endfunc

func Test_smoothscroll_textoff_small_winwidth()
  set smoothscroll number
  call setline(1, 'llanfairpwllgwyngyllgogerychwyrndrobwllllantysiliogogogoch')
  vsplit

  let textoff = getwininfo(win_getid())[0].textoff
  execute 'vertical resize' textoff + 1
  redraw
  call assert_equal(0, winsaveview().skipcol)
  execute "normal! 0\<C-E>"
  redraw
  call assert_equal(1, winsaveview().skipcol)
  execute 'vertical resize' textoff - 1
  " This caused a signed integer overflow.
  redraw
  call assert_equal(1, winsaveview().skipcol)
  execute 'vertical resize' textoff
  " This caused an infinite loop.
  redraw
  call assert_equal(1, winsaveview().skipcol)

  %bw!
  set smoothscroll& number&
endfunc

" vim: shiftwidth=2 sts=2 expandtab