neovim/test/old/testdir/test_scroll_opt.vim
Luuk van Baal 9b9ccac625 vim-patch:9.0.1121: cursor positioning and display problems with 'smoothscroll'
Problem:    Cursor positioning and display problems with 'smoothscroll' and
            using "zt", "zb" or "zz".
Solution:   Adjust computations and conditions. (Yee Cheng Chin,
            closes vim/vim#11764)

db4d88c2ad

Co-authored-by: Bram Moolenaar <Bram@vim.org>
2023-05-02 13:11:47 +02:00

582 lines
17 KiB
VimL

" Test for reset 'scroll' and 'smoothscroll'
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_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_number()
CheckScreendump
let lines =<< trim END
vim9script
setline(1, [
'one ' .. 'word '->repeat(20),
'two ' .. 'long word '->repeat(7),
'line',
'line',
'line',
])
set smoothscroll
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, ":call DoRel()\<CR>")
call VerifyScreenDump(buf, 'Test_smooth_number_7', {})
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', {})
" 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, "zb")
call VerifyScreenDump(buf, 'Test_smooth_long_11', {})
call term_sendkeys(buf, "zz")
call VerifyScreenDump(buf, 'Test_smooth_long_12', {})
call term_sendkeys(buf, "zt")
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>")
call term_sendkeys(buf, "3Gzt")
call term_sendkeys(buf, "j")
call VerifyScreenDump(buf, 'Test_smooth_long_14', {})
" 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_15', {})
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
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)
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
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
" vim: shiftwidth=2 sts=2 expandtab