neovim/test/functional/api/highlight_spec.lua
2024-01-12 18:59:14 +00:00

712 lines
22 KiB
Lua

local helpers = require('test.functional.helpers')(after_each)
local clear = helpers.clear
local Screen = require('test.functional.ui.screen')
local eq, eval = helpers.eq, helpers.eval
local command = helpers.command
local exec_capture = helpers.exec_capture
local api = helpers.api
local fn = helpers.fn
local pcall_err = helpers.pcall_err
local ok = helpers.ok
local assert_alive = helpers.assert_alive
describe('API: highlight', function()
clear()
Screen.new() -- initialize Screen.colors
local expected_rgb = {
background = Screen.colors.Yellow,
foreground = Screen.colors.Red,
special = Screen.colors.Blue,
bold = true,
}
local expected_cterm = {
background = 10,
underline = true,
}
local expected_rgb2 = {
background = Screen.colors.Yellow,
foreground = Screen.colors.Red,
special = Screen.colors.Blue,
bold = true,
italic = true,
reverse = true,
underline = true,
strikethrough = true,
altfont = true,
nocombine = true,
}
local expected_undercurl = {
background = Screen.colors.Yellow,
foreground = Screen.colors.Red,
special = Screen.colors.Blue,
undercurl = true,
}
before_each(function()
clear()
command(
'hi NewHighlight cterm=underline ctermbg=green guifg=red guibg=yellow guisp=blue gui=bold'
)
end)
it('nvim_get_hl_by_id', function()
local hl_id = eval("hlID('NewHighlight')")
eq(expected_cterm, api.nvim_get_hl_by_id(hl_id, false))
hl_id = eval("hlID('NewHighlight')")
-- Test valid id.
eq(expected_rgb, api.nvim_get_hl_by_id(hl_id, true))
-- Test invalid id.
eq('Invalid highlight id: 30000', pcall_err(api.nvim_get_hl_by_id, 30000, false))
-- Test all highlight properties.
command('hi NewHighlight gui=underline,bold,italic,reverse,strikethrough,altfont,nocombine')
eq(expected_rgb2, api.nvim_get_hl_by_id(hl_id, true))
-- Test undercurl
command('hi NewHighlight gui=undercurl')
eq(expected_undercurl, api.nvim_get_hl_by_id(hl_id, true))
-- Test nil argument.
eq(
'Wrong type for argument 1 when calling nvim_get_hl_by_id, expecting Integer',
pcall_err(api.nvim_get_hl_by_id, { nil }, false)
)
-- Test 0 argument.
eq('Invalid highlight id: 0', pcall_err(api.nvim_get_hl_by_id, 0, false))
-- Test -1 argument.
eq('Invalid highlight id: -1', pcall_err(api.nvim_get_hl_by_id, -1, false))
-- Test highlight group without ctermbg value.
command('hi Normal ctermfg=red ctermbg=yellow')
command('hi NewConstant ctermfg=green guifg=white guibg=blue')
hl_id = eval("hlID('NewConstant')")
eq({ foreground = 10 }, api.nvim_get_hl_by_id(hl_id, false))
-- Test highlight group without ctermfg value.
command('hi clear NewConstant')
command('hi NewConstant ctermbg=Magenta guifg=white guibg=blue')
eq({ background = 13 }, api.nvim_get_hl_by_id(hl_id, false))
-- Test highlight group with ctermfg and ctermbg values.
command('hi clear NewConstant')
command('hi NewConstant ctermfg=green ctermbg=Magenta guifg=white guibg=blue')
eq({ foreground = 10, background = 13 }, api.nvim_get_hl_by_id(hl_id, false))
end)
it('nvim_get_hl_by_name', function()
local expected_normal = { background = Screen.colors.Yellow, foreground = Screen.colors.Red }
-- Test `Normal` default values.
eq({}, api.nvim_get_hl_by_name('Normal', true))
eq(expected_cterm, api.nvim_get_hl_by_name('NewHighlight', false))
eq(expected_rgb, api.nvim_get_hl_by_name('NewHighlight', true))
-- Test `Normal` modified values.
command('hi Normal guifg=red guibg=yellow')
eq(expected_normal, api.nvim_get_hl_by_name('Normal', true))
-- Test invalid name.
eq(
"Invalid highlight name: 'unknown_highlight'",
pcall_err(api.nvim_get_hl_by_name, 'unknown_highlight', false)
)
-- Test nil argument.
eq(
'Wrong type for argument 1 when calling nvim_get_hl_by_name, expecting String',
pcall_err(api.nvim_get_hl_by_name, { nil }, false)
)
-- Test empty string argument.
eq('Invalid highlight name', pcall_err(api.nvim_get_hl_by_name, '', false))
-- Test "standout" attribute. #8054
eq({ underline = true }, api.nvim_get_hl_by_name('cursorline', 0))
command('hi CursorLine cterm=standout,underline term=standout,underline gui=standout,underline')
command('set cursorline')
eq({ underline = true, standout = true }, api.nvim_get_hl_by_name('cursorline', 0))
-- Test cterm & Normal values. #18024 (tail) & #18980
-- Ensure Normal, and groups that match Normal return their fg & bg cterm values
api.nvim_set_hl(0, 'Normal', { ctermfg = 17, ctermbg = 213 })
api.nvim_set_hl(0, 'NotNormal', { ctermfg = 17, ctermbg = 213, nocombine = true })
-- Note colors are "cterm" values, not rgb-as-ints
eq({ foreground = 17, background = 213 }, api.nvim_get_hl_by_name('Normal', false))
eq(
{ foreground = 17, background = 213, nocombine = true },
api.nvim_get_hl_by_name('NotNormal', false)
)
end)
it('nvim_get_hl_id_by_name', function()
-- precondition: use a hl group that does not yet exist
eq("Invalid highlight name: 'Shrubbery'", pcall_err(api.nvim_get_hl_by_name, 'Shrubbery', true))
eq(0, fn.hlID('Shrubbery'))
local hl_id = api.nvim_get_hl_id_by_name('Shrubbery')
ok(hl_id > 0)
eq(hl_id, fn.hlID('Shrubbery'))
command('hi Shrubbery guifg=#888888 guibg=#888888')
eq(
{ foreground = tonumber('0x888888'), background = tonumber('0x888888') },
api.nvim_get_hl_by_id(hl_id, true)
)
eq(
{ foreground = tonumber('0x888888'), background = tonumber('0x888888') },
api.nvim_get_hl_by_name('Shrubbery', true)
)
end)
it("nvim_buf_add_highlight to other buffer doesn't crash if undo is disabled #12873", function()
command('vsplit file')
local err, _ = pcall(api.nvim_set_option_value, 'undofile', false, { buf = 1 })
eq(true, err)
err, _ = pcall(api.nvim_set_option_value, 'undolevels', -1, { buf = 1 })
eq(true, err)
err, _ = pcall(api.nvim_buf_add_highlight, 1, -1, 'Question', 0, 0, -1)
eq(true, err)
assert_alive()
end)
end)
describe('API: set highlight', function()
local highlight_color = {
fg = tonumber('0xff0000'),
bg = tonumber('0x0032aa'),
ctermfg = 8,
ctermbg = 15,
}
local highlight1 = {
background = highlight_color.bg,
foreground = highlight_color.fg,
bold = true,
italic = true,
}
local highlight2_config = {
ctermbg = highlight_color.ctermbg,
ctermfg = highlight_color.ctermfg,
underline = true,
reverse = true,
}
local highlight2_result = {
background = highlight_color.ctermbg,
foreground = highlight_color.ctermfg,
underline = true,
reverse = true,
}
local highlight3_config = {
background = highlight_color.bg,
foreground = highlight_color.fg,
ctermbg = highlight_color.ctermbg,
ctermfg = highlight_color.ctermfg,
bold = true,
italic = true,
reverse = true,
underdashed = true,
strikethrough = true,
altfont = true,
cterm = {
italic = true,
reverse = true,
strikethrough = true,
altfont = true,
nocombine = true,
},
}
local highlight3_result_gui = {
background = highlight_color.bg,
foreground = highlight_color.fg,
bold = true,
italic = true,
reverse = true,
underdashed = true,
strikethrough = true,
altfont = true,
}
local highlight3_result_cterm = {
background = highlight_color.ctermbg,
foreground = highlight_color.ctermfg,
italic = true,
reverse = true,
strikethrough = true,
altfont = true,
nocombine = true,
}
local function get_ns()
local ns = api.nvim_create_namespace('Test_set_hl')
api.nvim_set_hl_ns(ns)
return ns
end
before_each(clear)
it('validation', function()
eq(
"Invalid 'blend': out of range",
pcall_err(api.nvim_set_hl, 0, 'Test_hl3', { fg = '#FF00FF', blend = 999 })
)
eq(
"Invalid 'blend': expected Integer, got Array",
pcall_err(api.nvim_set_hl, 0, 'Test_hl3', { fg = '#FF00FF', blend = {} })
)
end)
it('can set gui highlight', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight1)
eq(highlight1, api.nvim_get_hl_by_name('Test_hl', true))
end)
it('can set cterm highlight', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight2_config)
eq(highlight2_result, api.nvim_get_hl_by_name('Test_hl', false))
end)
it('can set empty cterm attr', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', { cterm = {} })
eq({}, api.nvim_get_hl_by_name('Test_hl', false))
end)
it('cterm attr defaults to gui attr', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight1)
eq({
bold = true,
italic = true,
}, api.nvim_get_hl_by_name('Test_hl', false))
end)
it('can overwrite attr for cterm', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight3_config)
eq(highlight3_result_gui, api.nvim_get_hl_by_name('Test_hl', true))
eq(highlight3_result_cterm, api.nvim_get_hl_by_name('Test_hl', false))
end)
it('only allows one underline attribute #22371', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', {
underdouble = true,
underdotted = true,
cterm = {
underline = true,
undercurl = true,
},
})
eq({ undercurl = true }, api.nvim_get_hl_by_name('Test_hl', false))
eq({ underdotted = true }, api.nvim_get_hl_by_name('Test_hl', true))
end)
it('can set a highlight in the global namespace', function()
api.nvim_set_hl(0, 'Test_hl', highlight2_config)
eq(
'Test_hl xxx cterm=underline,reverse ctermfg=8 ctermbg=15 gui=underline,reverse',
exec_capture('highlight Test_hl')
)
api.nvim_set_hl(0, 'Test_hl', { background = highlight_color.bg })
eq('Test_hl xxx guibg=#0032aa', exec_capture('highlight Test_hl'))
api.nvim_set_hl(0, 'Test_hl2', highlight3_config)
eq(
'Test_hl2 xxx cterm=italic,reverse,strikethrough,altfont,nocombine ctermfg=8 ctermbg=15 gui=bold,underdashed,italic,reverse,strikethrough,altfont guifg=#ff0000 guibg=#0032aa',
exec_capture('highlight Test_hl2')
)
-- Colors are stored with the name they are defined, but
-- with canonical casing
api.nvim_set_hl(0, 'Test_hl3', { bg = 'reD', fg = 'bLue' })
eq('Test_hl3 xxx guifg=Blue guibg=Red', exec_capture('highlight Test_hl3'))
end)
it('can modify a highlight in the global namespace', function()
api.nvim_set_hl(0, 'Test_hl3', { bg = 'red', fg = 'blue' })
eq('Test_hl3 xxx guifg=Blue guibg=Red', exec_capture('highlight Test_hl3'))
api.nvim_set_hl(0, 'Test_hl3', { bg = 'red' })
eq('Test_hl3 xxx guibg=Red', exec_capture('highlight Test_hl3'))
api.nvim_set_hl(0, 'Test_hl3', { ctermbg = 9, ctermfg = 12 })
eq('Test_hl3 xxx ctermfg=12 ctermbg=9', exec_capture('highlight Test_hl3'))
api.nvim_set_hl(0, 'Test_hl3', { ctermbg = 'red', ctermfg = 'blue' })
eq('Test_hl3 xxx ctermfg=12 ctermbg=9', exec_capture('highlight Test_hl3'))
api.nvim_set_hl(0, 'Test_hl3', { ctermbg = 9 })
eq('Test_hl3 xxx ctermbg=9', exec_capture('highlight Test_hl3'))
eq(
"Invalid highlight color: 'redd'",
pcall_err(api.nvim_set_hl, 0, 'Test_hl3', { fg = 'redd' })
)
eq(
"Invalid highlight color: 'bleu'",
pcall_err(api.nvim_set_hl, 0, 'Test_hl3', { ctermfg = 'bleu' })
)
api.nvim_set_hl(0, 'Test_hl3', { fg = '#FF00FF' })
eq('Test_hl3 xxx guifg=#ff00ff', exec_capture('highlight Test_hl3'))
eq(
"Invalid highlight color: '#FF00FF'",
pcall_err(api.nvim_set_hl, 0, 'Test_hl3', { ctermfg = '#FF00FF' })
)
for _, fg_val in ipairs { nil, 'NONE', 'nOnE', '', -1 } do
api.nvim_set_hl(0, 'Test_hl3', { fg = fg_val })
eq('Test_hl3 xxx cleared', exec_capture('highlight Test_hl3'))
end
api.nvim_set_hl(0, 'Test_hl3', { fg = '#FF00FF', blend = 50 })
eq('Test_hl3 xxx guifg=#ff00ff blend=50', exec_capture('highlight Test_hl3'))
end)
it("correctly sets 'Normal' internal properties", function()
-- Normal has some special handling internally. #18024
api.nvim_set_hl(0, 'Normal', { fg = '#000083', bg = '#0000F3' })
eq({ foreground = 131, background = 243 }, api.nvim_get_hl_by_name('Normal', true))
end)
it('does not segfault on invalid group name #20009', function()
eq(
"Invalid highlight name: 'foo bar'",
pcall_err(api.nvim_set_hl, 0, 'foo bar', { bold = true })
)
assert_alive()
end)
end)
describe('API: get highlight', function()
local highlight_color = {
fg = tonumber('0xff0000'),
bg = tonumber('0x0032aa'),
ctermfg = 8,
ctermbg = 15,
}
local highlight1 = {
bg = highlight_color.bg,
fg = highlight_color.fg,
bold = true,
italic = true,
cterm = { bold = true, italic = true },
}
local highlight2 = {
ctermbg = highlight_color.ctermbg,
ctermfg = highlight_color.ctermfg,
underline = true,
reverse = true,
cterm = { underline = true, reverse = true },
}
local highlight3_config = {
bg = highlight_color.bg,
fg = highlight_color.fg,
ctermbg = highlight_color.ctermbg,
ctermfg = highlight_color.ctermfg,
bold = true,
italic = true,
reverse = true,
underdashed = true,
strikethrough = true,
altfont = true,
cterm = {
italic = true,
reverse = true,
strikethrough = true,
altfont = true,
nocombine = true,
},
}
local highlight3_result = {
bg = highlight_color.bg,
fg = highlight_color.fg,
ctermbg = highlight_color.ctermbg,
ctermfg = highlight_color.ctermfg,
bold = true,
italic = true,
reverse = true,
underdashed = true,
strikethrough = true,
altfont = true,
cterm = {
italic = true,
nocombine = true,
reverse = true,
strikethrough = true,
altfont = true,
},
}
local function get_ns()
-- Test namespace filtering behavior
local ns2 = api.nvim_create_namespace('Another_namespace')
api.nvim_set_hl(ns2, 'Test_hl', { ctermfg = 23 })
api.nvim_set_hl(ns2, 'Test_another_hl', { link = 'Test_hl' })
api.nvim_set_hl(ns2, 'Test_hl_link', { link = 'Test_another_hl' })
api.nvim_set_hl(ns2, 'Test_another_hl_link', { link = 'Test_hl_link' })
local ns = api.nvim_create_namespace('Test_set_hl')
api.nvim_set_hl_ns(ns)
return ns
end
before_each(clear)
it('validation', function()
eq(
"Invalid 'name': expected String, got Integer",
pcall_err(api.nvim_get_hl, 0, { name = 177 })
)
eq('Highlight id out of bounds', pcall_err(api.nvim_get_hl, 0, { name = 'Test set hl' }))
end)
it('nvim_get_hl with create flag', function()
eq({}, api.nvim_get_hl(0, { name = 'Foo', create = false }))
eq(0, fn.hlexists('Foo'))
api.nvim_get_hl(0, { name = 'Bar', create = true })
eq(1, fn.hlexists('Bar'))
api.nvim_get_hl(0, { name = 'FooBar' })
eq(1, fn.hlexists('FooBar'))
end)
it('can get all highlights in current namespace', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', { bg = '#B4BEFE' })
api.nvim_set_hl(ns, 'Test_hl_link', { link = 'Test_hl' })
eq({
Test_hl = {
bg = 11845374,
},
Test_hl_link = {
link = 'Test_hl',
},
}, api.nvim_get_hl(ns, {}))
end)
it('can get gui highlight', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight1)
eq(highlight1, api.nvim_get_hl(ns, { name = 'Test_hl' }))
end)
it('can get cterm highlight', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight2)
eq(highlight2, api.nvim_get_hl(ns, { name = 'Test_hl' }))
end)
it('can get empty cterm attr', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', { cterm = {} })
eq({}, api.nvim_get_hl(ns, { name = 'Test_hl' }))
end)
it('cterm attr defaults to gui attr', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight1)
eq(highlight1, api.nvim_get_hl(ns, { name = 'Test_hl' }))
end)
it('can overwrite attr for cterm', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', highlight3_config)
eq(highlight3_result, api.nvim_get_hl(ns, { name = 'Test_hl' }))
end)
it('only allows one underline attribute #22371', function()
local ns = get_ns()
api.nvim_set_hl(ns, 'Test_hl', {
underdouble = true,
underdotted = true,
cterm = {
underline = true,
undercurl = true,
},
})
eq(
{ underdotted = true, cterm = { undercurl = true } },
api.nvim_get_hl(ns, { name = 'Test_hl' })
)
end)
it('can get a highlight in the global namespace', function()
api.nvim_set_hl(0, 'Test_hl', highlight2)
eq(highlight2, api.nvim_get_hl(0, { name = 'Test_hl' }))
api.nvim_set_hl(0, 'Test_hl', { background = highlight_color.bg })
eq({
bg = 12970,
}, api.nvim_get_hl(0, { name = 'Test_hl' }))
api.nvim_set_hl(0, 'Test_hl2', highlight3_config)
eq(highlight3_result, api.nvim_get_hl(0, { name = 'Test_hl2' }))
-- Colors are stored with the name they are defined, but
-- with canonical casing
api.nvim_set_hl(0, 'Test_hl3', { bg = 'reD', fg = 'bLue' })
eq({
bg = 16711680,
fg = 255,
}, api.nvim_get_hl(0, { name = 'Test_hl3' }))
end)
it('nvim_get_hl by id', function()
local hl_id = api.nvim_get_hl_id_by_name('NewHighlight')
command(
'hi NewHighlight cterm=underline ctermbg=green guifg=red guibg=yellow guisp=blue gui=bold'
)
eq({
fg = 16711680,
bg = 16776960,
sp = 255,
bold = true,
ctermbg = 10,
cterm = { underline = true },
}, api.nvim_get_hl(0, { id = hl_id }))
-- Test 0 argument
eq('Highlight id out of bounds', pcall_err(api.nvim_get_hl, 0, { id = 0 }))
eq(
"Invalid 'id': expected Integer, got String",
pcall_err(api.nvim_get_hl, 0, { id = 'Test_set_hl' })
)
-- Test all highlight properties.
command('hi NewHighlight gui=underline,bold,italic,reverse,strikethrough,altfont,nocombine')
eq({
fg = 16711680,
bg = 16776960,
sp = 255,
altfont = true,
bold = true,
italic = true,
nocombine = true,
reverse = true,
strikethrough = true,
underline = true,
ctermbg = 10,
cterm = { underline = true },
}, api.nvim_get_hl(0, { id = hl_id }))
-- Test undercurl
command('hi NewHighlight gui=undercurl')
eq({
fg = 16711680,
bg = 16776960,
sp = 255,
undercurl = true,
ctermbg = 10,
cterm = { underline = true },
}, api.nvim_get_hl(0, { id = hl_id }))
end)
it('can correctly detect links', function()
command('hi String guifg=#a6e3a1 ctermfg=NONE')
command('hi link @string string')
command('hi link @string.cpp @string')
eq({ fg = 10937249 }, api.nvim_get_hl(0, { name = 'String' }))
eq({ link = 'String' }, api.nvim_get_hl(0, { name = '@string' }))
eq({ fg = 10937249 }, api.nvim_get_hl(0, { name = '@string.cpp', link = false }))
end)
it('can get all attributes for a linked group', function()
command('hi Bar guifg=red')
command('hi Foo guifg=#00ff00 gui=bold,underline')
command('hi! link Foo Bar')
eq(
{ link = 'Bar', fg = tonumber('00ff00', 16), bold = true, underline = true },
api.nvim_get_hl(0, { name = 'Foo', link = true })
)
end)
it('can set link as well as other attributes', function()
command('hi Bar guifg=red')
local hl = { link = 'Bar', fg = tonumber('00ff00', 16), bold = true, cterm = { bold = true } }
api.nvim_set_hl(0, 'Foo', hl)
eq(hl, api.nvim_get_hl(0, { name = 'Foo', link = true }))
end)
it("doesn't contain unset groups", function()
local id = api.nvim_get_hl_id_by_name '@foobar.hubbabubba'
ok(id > 0)
local data = api.nvim_get_hl(0, {})
eq(nil, data['@foobar.hubbabubba'])
eq(nil, data['@foobar'])
command 'hi @foobar.hubbabubba gui=bold'
data = api.nvim_get_hl(0, {})
eq({ bold = true }, data['@foobar.hubbabubba'])
eq(nil, data['@foobar'])
-- @foobar.hubbabubba was explicitly cleared and thus shows up
-- but @foobar was never touched, and thus doesn't
command 'hi clear @foobar.hubbabubba'
data = api.nvim_get_hl(0, {})
eq({}, data['@foobar.hubbabubba'])
eq(nil, data['@foobar'])
end)
it('should return default flag', function()
api.nvim_set_hl(0, 'Tried', { fg = '#00ff00', default = true })
eq({ fg = tonumber('00ff00', 16), default = true }, api.nvim_get_hl(0, { name = 'Tried' }))
end)
it('should not output empty gui and cterm #23474', function()
api.nvim_set_hl(0, 'Foo', { default = true })
api.nvim_set_hl(0, 'Bar', { default = true, fg = '#ffffff' })
api.nvim_set_hl(0, 'FooBar', { default = true, fg = '#ffffff', cterm = { bold = true } })
api.nvim_set_hl(
0,
'FooBarA',
{ default = true, fg = '#ffffff', cterm = { bold = true, italic = true } }
)
eq('Foo xxx cleared', exec_capture('highlight Foo'))
eq({ default = true }, api.nvim_get_hl(0, { name = 'Foo' }))
eq('Bar xxx guifg=#ffffff', exec_capture('highlight Bar'))
eq('FooBar xxx cterm=bold guifg=#ffffff', exec_capture('highlight FooBar'))
eq('FooBarA xxx cterm=bold,italic guifg=#ffffff', exec_capture('highlight FooBarA'))
end)
it('can override exist highlight group by force #20323', function()
local white = tonumber('ffffff', 16)
local green = tonumber('00ff00', 16)
api.nvim_set_hl(0, 'Foo', { fg = white })
api.nvim_set_hl(0, 'Foo', { fg = green, force = true })
eq({ fg = green }, api.nvim_get_hl(0, { name = 'Foo' }))
api.nvim_set_hl(0, 'Bar', { link = 'Comment', default = true })
api.nvim_set_hl(0, 'Bar', { link = 'Foo', default = true, force = true })
eq({ link = 'Foo', default = true }, api.nvim_get_hl(0, { name = 'Bar' }))
end)
end)
describe('API: set/get highlight namespace', function()
it('set/get highlight namespace', function()
eq(0, api.nvim_get_hl_ns({}))
local ns = api.nvim_create_namespace('')
api.nvim_set_hl_ns(ns)
eq(ns, api.nvim_get_hl_ns({}))
end)
it('set/get window highlight namespace', function()
eq(-1, api.nvim_get_hl_ns({ winid = 0 }))
local ns = api.nvim_create_namespace('')
api.nvim_win_set_hl_ns(0, ns)
eq(ns, api.nvim_get_hl_ns({ winid = 0 }))
end)
end)