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6d8c8b18d5
Problem: The magic globals `it`, `describe`, etc., are more trouble than they are worth. - Hooking into `after_each` requires `getfenv()` hacks. - They confuse luals/emmylua, because the top-level `.luarc.json` isn't merged with `test/.luarc.json` (apparently a luals limitation?) - They totally defeat discoverability because the user just has to "know" about the various magic symbols. So they harm DX, which means they serve no purpose at all. Solution: - Expose the test API from `testutil`, so tests can call `t.it()`, `t.describe()`, etc., in the conventional way. - Drop `getfenv()` hacks. - Drop the `setfenv()` injection in `load_chunk`. - Drop `test/_meta.lua`.
173 lines
4.1 KiB
Lua
173 lines
4.1 KiB
Lua
local t = require('test.testutil')
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local n = require('test.functional.testnvim')()
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local describe, it, before_each = t.describe, t.it, t.before_each
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local command = n.command
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local clear = n.clear
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local eval = n.eval
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local eq = t.eq
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local pcall_err = t.pcall_err
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local feed = n.feed
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local scroll = function(direction)
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return n.request('nvim_input_mouse', 'wheel', direction, '', 0, 2, 2)
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end
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local screenrow = function()
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return n.call('screenrow')
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end
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local screencol = function()
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return n.call('screencol')
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end
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describe("'mousescroll'", function()
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local invalid_arg = 'Vim(set):E474: Invalid argument: mousescroll='
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local digit_expected = 'Vim(set):E5080: Digit expected: mousescroll='
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local function should_fail(val, errorstr)
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eq(errorstr .. val, pcall_err(command, 'set mousescroll=' .. val))
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end
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local function should_succeed(val)
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command('set mousescroll=' .. val)
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end
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before_each(function()
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clear()
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command('set nowrap lines=20 columns=20 virtualedit=all')
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feed('100o<Esc>50G10|')
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end)
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it('handles invalid values', function()
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should_fail('', invalid_arg) -- empty string
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should_fail('foo:123', invalid_arg) -- unknown direction
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should_fail('hor:1,hor:2', invalid_arg) -- duplicate direction
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should_fail('ver:99999999999999999999', invalid_arg) -- integer overflow
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should_fail('ver:bar', digit_expected) -- expected digit
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should_fail('ver:-1', digit_expected) -- negative count
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end)
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it('handles valid values', function()
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should_succeed('hor:1,ver:1') -- both directions set
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should_succeed('hor:1') -- only horizontal
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should_succeed('ver:1') -- only vertical
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should_succeed('hor:0,ver:0') -- zero
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should_succeed('hor:2147483647') -- large count
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end)
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it('default set correctly', function()
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eq('ver:3,hor:6', eval('&mousescroll'))
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eq(10, screenrow())
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scroll('up')
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eq(13, screenrow())
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scroll('down')
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eq(10, screenrow())
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eq(10, screencol())
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scroll('right')
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eq(4, screencol())
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scroll('left')
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eq(10, screencol())
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end)
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it('vertical scrolling falls back to default value', function()
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command('set mousescroll=hor:1')
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eq(10, screenrow())
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scroll('up')
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eq(13, screenrow())
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end)
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it('horizontal scrolling falls back to default value', function()
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command('set mousescroll=ver:1')
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eq(10, screencol())
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scroll('right')
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eq(4, screencol())
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end)
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it('count of zero disables mouse scrolling', function()
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command('set mousescroll=hor:0,ver:0')
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eq(10, screenrow())
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scroll('up')
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eq(10, screenrow())
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scroll('down')
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eq(10, screenrow())
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eq(10, screencol())
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scroll('right')
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eq(10, screencol())
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scroll('left')
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eq(10, screencol())
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-- vertical scrolling is still disabled with non-zero 'scrolloff' value
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command('set scrolloff=1')
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eq(10, screenrow())
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scroll('up')
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eq(10, screenrow())
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scroll('down')
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eq(10, screenrow())
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-- also in insert mode
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feed('i')
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eq(10, screenrow())
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scroll('up')
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eq(10, screenrow())
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scroll('down')
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eq(10, screenrow())
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end)
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local test_vertical_scrolling = function()
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eq(10, screenrow())
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command('set mousescroll=ver:1')
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scroll('up')
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eq(11, screenrow())
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command('set mousescroll=ver:2')
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scroll('down')
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eq(9, screenrow())
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command('set mousescroll=ver:5')
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scroll('up')
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eq(14, screenrow())
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end
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it('controls vertical scrolling in normal mode', function()
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test_vertical_scrolling()
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end)
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it('controls vertical scrolling in insert mode', function()
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feed('i')
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test_vertical_scrolling()
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end)
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local test_horizontal_scrolling = function()
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eq(10, screencol())
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command('set mousescroll=hor:1')
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scroll('right')
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eq(9, screencol())
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command('set mousescroll=hor:3')
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scroll('right')
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eq(6, screencol())
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command('set mousescroll=hor:2')
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scroll('left')
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eq(8, screencol())
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end
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it('controls horizontal scrolling in normal mode', function()
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test_horizontal_scrolling()
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end)
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it('controls horizontal scrolling in insert mode', function()
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feed('i')
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test_horizontal_scrolling()
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end)
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end)
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