neovim

Neovim text editor
git clone https://git.dasho.dev/neovim.git
Log | Files | Refs | README

mousescroll_spec.lua (4130B)

      1 local t = require('test.testutil')
      2 local n = require('test.functional.testnvim')()
      3 
      4 local command = n.command
      5 local clear = n.clear
      6 local eval = n.eval
      7 local eq = t.eq
      8 local exc_exec = n.exc_exec
      9 local feed = n.feed
     10 
     11 local scroll = function(direction)
     12  return n.request('nvim_input_mouse', 'wheel', direction, '', 0, 2, 2)
     13 end
     14 
     15 local screenrow = function()
     16  return n.call('screenrow')
     17 end
     18 
     19 local screencol = function()
     20  return n.call('screencol')
     21 end
     22 
     23 describe("'mousescroll'", function()
     24  local invalid_arg = 'Vim(set):E474: Invalid argument: mousescroll='
     25  local digit_expected = 'Vim(set):E5080: Digit expected: mousescroll='
     26 
     27  local function should_fail(val, errorstr)
     28    eq(errorstr .. val, exc_exec('set mousescroll=' .. val))
     29  end
     30 
     31  local function should_succeed(val)
     32    eq(0, exc_exec('set mousescroll=' .. val))
     33  end
     34 
     35  before_each(function()
     36    clear()
     37    command('set nowrap lines=20 columns=20 virtualedit=all')
     38    feed('100o<Esc>50G10|')
     39  end)
     40 
     41  it('handles invalid values', function()
     42    should_fail('', invalid_arg) -- empty string
     43    should_fail('foo:123', invalid_arg) -- unknown direction
     44    should_fail('hor:1,hor:2', invalid_arg) -- duplicate direction
     45    should_fail('ver:99999999999999999999', invalid_arg) -- integer overflow
     46    should_fail('ver:bar', digit_expected) -- expected digit
     47    should_fail('ver:-1', digit_expected) -- negative count
     48  end)
     49 
     50  it('handles valid values', function()
     51    should_succeed('hor:1,ver:1') -- both directions set
     52    should_succeed('hor:1') -- only horizontal
     53    should_succeed('ver:1') -- only vertical
     54    should_succeed('hor:0,ver:0') -- zero
     55    should_succeed('hor:2147483647') -- large count
     56  end)
     57 
     58  it('default set correctly', function()
     59    eq('ver:3,hor:6', eval('&mousescroll'))
     60 
     61    eq(10, screenrow())
     62    scroll('up')
     63    eq(13, screenrow())
     64    scroll('down')
     65    eq(10, screenrow())
     66 
     67    eq(10, screencol())
     68    scroll('right')
     69    eq(4, screencol())
     70    scroll('left')
     71    eq(10, screencol())
     72  end)
     73 
     74  it('vertical scrolling falls back to default value', function()
     75    command('set mousescroll=hor:1')
     76    eq(10, screenrow())
     77    scroll('up')
     78    eq(13, screenrow())
     79  end)
     80 
     81  it('horizontal scrolling falls back to default value', function()
     82    command('set mousescroll=ver:1')
     83    eq(10, screencol())
     84    scroll('right')
     85    eq(4, screencol())
     86  end)
     87 
     88  it('count of zero disables mouse scrolling', function()
     89    command('set mousescroll=hor:0,ver:0')
     90 
     91    eq(10, screenrow())
     92    scroll('up')
     93    eq(10, screenrow())
     94    scroll('down')
     95    eq(10, screenrow())
     96 
     97    eq(10, screencol())
     98    scroll('right')
     99    eq(10, screencol())
    100    scroll('left')
    101    eq(10, screencol())
    102 
    103    -- vertical scrolling is still disabled with non-zero 'scrolloff' value
    104    command('set scrolloff=1')
    105 
    106    eq(10, screenrow())
    107    scroll('up')
    108    eq(10, screenrow())
    109    scroll('down')
    110    eq(10, screenrow())
    111 
    112    -- also in insert mode
    113    feed('i')
    114 
    115    eq(10, screenrow())
    116    scroll('up')
    117    eq(10, screenrow())
    118    scroll('down')
    119    eq(10, screenrow())
    120  end)
    121 
    122  local test_vertical_scrolling = function()
    123    eq(10, screenrow())
    124 
    125    command('set mousescroll=ver:1')
    126    scroll('up')
    127    eq(11, screenrow())
    128 
    129    command('set mousescroll=ver:2')
    130    scroll('down')
    131    eq(9, screenrow())
    132 
    133    command('set mousescroll=ver:5')
    134    scroll('up')
    135    eq(14, screenrow())
    136  end
    137 
    138  it('controls vertical scrolling in normal mode', function()
    139    test_vertical_scrolling()
    140  end)
    141 
    142  it('controls vertical scrolling in insert mode', function()
    143    feed('i')
    144    test_vertical_scrolling()
    145  end)
    146 
    147  local test_horizontal_scrolling = function()
    148    eq(10, screencol())
    149 
    150    command('set mousescroll=hor:1')
    151    scroll('right')
    152    eq(9, screencol())
    153 
    154    command('set mousescroll=hor:3')
    155    scroll('right')
    156    eq(6, screencol())
    157 
    158    command('set mousescroll=hor:2')
    159    scroll('left')
    160    eq(8, screencol())
    161  end
    162 
    163  it('controls horizontal scrolling in normal mode', function()
    164    test_horizontal_scrolling()
    165  end)
    166 
    167  it('controls horizontal scrolling in insert mode', function()
    168    feed('i')
    169    test_horizontal_scrolling()
    170  end)
    171 end)