Files
neovim/test/functional/lua/api_spec.lua
Justin M. Keyes 71ac4db335 refactor(api): rename "window" to "win" (positional parameters) #39083
continues d0af4cd909.

This commit renames positional parameters. This is only "cosmetic", but
is intended to make it extra clear which name is preferred, since people
often copy existing code despite the guidelines in `:help dev-naming`.
2026-04-15 13:31:17 -04:00

397 lines
14 KiB
Lua

-- Test suite for testing interactions with API bindings
local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local exc_exec = n.exc_exec
local remove_trace = t.remove_trace
local fn = n.fn
local clear = n.clear
local eval = n.eval
local NIL = vim.NIL
local eq = t.eq
local exec_lua = n.exec_lua
local pcall_err = t.pcall_err
before_each(clear)
describe('luaeval(vim.api.…)', function()
describe('with channel_id and buffer handle', function()
describe('nvim_buf_get_lines', function()
it('works', function()
fn.setline(1, { 'abc', 'def', 'a\nb', 'ttt' })
eq({ 'a\000b' }, fn.luaeval('vim.api.nvim_buf_get_lines(1, 2, 3, false)'))
end)
end)
describe('nvim_buf_set_lines', function()
it('works', function()
fn.setline(1, { 'abc', 'def', 'a\nb', 'ttt' })
eq(NIL, fn.luaeval('vim.api.nvim_buf_set_lines(1, 1, 2, false, {"b\\0a"})'))
eq(
{ 'abc', 'b\000a', 'a\000b', 'ttt' },
fn.luaeval('vim.api.nvim_buf_get_lines(1, 0, 4, false)')
)
end)
end)
end)
describe('with errors', function()
it('transforms API error from nvim_buf_set_lines into lua error', function()
fn.setline(1, { 'abc', 'def', 'a\nb', 'ttt' })
eq(
{ false, "'replacement string' item contains newlines" },
fn.luaeval('{pcall(vim.api.nvim_buf_set_lines, 1, 1, 2, false, {"b\\na"})}')
)
end)
it('transforms API error from nvim_win_set_cursor into lua error', function()
eq(
{ false, "Invalid 'pos': expected [row, col] array" },
fn.luaeval('{pcall(vim.api.nvim_win_set_cursor, 0, {1, 2, 3})}')
)
-- Used to produce a memory leak due to a bug in nvim_win_set_cursor
eq(
{ false, 'Invalid window id: -1' },
fn.luaeval('{pcall(vim.api.nvim_win_set_cursor, -1, {1, 2, 3})}')
)
end)
it(
'transforms API error from nvim_win_set_cursor + same array as in first test into lua error',
function()
eq(
{ false, "Invalid 'pos': expected [row, col] array" },
fn.luaeval('{pcall(vim.api.nvim_win_set_cursor, 0, {"b\\na"})}')
)
end
)
end)
it('correctly evaluates API code which calls luaeval', function()
local str = (
([===[vim.api.nvim_eval([==[
luaeval('vim.api.nvim_eval([=[
luaeval("vim.api.nvim_eval([[
luaeval(1)
]])")
]=])')
]==])]===]):gsub('\n', ' ')
)
eq(1, fn.luaeval(str))
end)
it('correctly converts from API objects', function()
eq(1, fn.luaeval('vim.api.nvim_eval("1")'))
eq('1', fn.luaeval([[vim.api.nvim_eval('"1"')]]))
eq('Blobby', fn.luaeval('vim.api.nvim_eval("0z426c6f626279")'))
eq({}, fn.luaeval('vim.api.nvim_eval("[]")'))
eq({}, fn.luaeval('vim.api.nvim_eval("{}")'))
eq(1, fn.luaeval('vim.api.nvim_eval("1.0")'))
eq('\000', fn.luaeval('vim.api.nvim_eval("0z00")'))
eq(true, fn.luaeval('vim.api.nvim_eval("v:true")'))
eq(false, fn.luaeval('vim.api.nvim_eval("v:false")'))
eq(NIL, fn.luaeval('vim.api.nvim_eval("v:null")'))
eq(0, eval([[type(luaeval('vim.api.nvim_eval("1")'))]]))
eq(1, eval([[type(luaeval('vim.api.nvim_eval("''1''")'))]]))
eq(1, eval([[type(luaeval('vim.api.nvim_eval("0zbeef")'))]]))
eq(3, eval([[type(luaeval('vim.api.nvim_eval("[]")'))]]))
eq(4, eval([[type(luaeval('vim.api.nvim_eval("{}")'))]]))
eq(5, eval([[type(luaeval('vim.api.nvim_eval("1.0")'))]]))
eq(6, eval([[type(luaeval('vim.api.nvim_eval("v:true")'))]]))
eq(6, eval([[type(luaeval('vim.api.nvim_eval("v:false")'))]]))
eq(7, eval([[type(luaeval('vim.api.nvim_eval("v:null")'))]]))
eq({ foo = 42 }, fn.luaeval([[vim.api.nvim_eval('{"foo": 42}')]]))
eq({ 42 }, fn.luaeval([[vim.api.nvim_eval('[42]')]]))
eq(
{ foo = { bar = 42 }, baz = 50 },
fn.luaeval([[vim.api.nvim_eval('{"foo": {"bar": 42}, "baz": 50}')]])
)
eq({ { 42 }, {} }, fn.luaeval([=[vim.api.nvim_eval('[[42], []]')]=]))
end)
it('correctly converts to API objects', function()
eq(1, fn.luaeval('vim.api.nvim__id(1)'))
eq('1', fn.luaeval('vim.api.nvim__id("1")'))
eq({ 1 }, fn.luaeval('vim.api.nvim__id({1})'))
eq({ foo = 1 }, fn.luaeval('vim.api.nvim__id({foo=1})'))
eq(1.5, fn.luaeval('vim.api.nvim__id(1.5)'))
eq(true, fn.luaeval('vim.api.nvim__id(true)'))
eq(false, fn.luaeval('vim.api.nvim__id(false)'))
eq(NIL, fn.luaeval('vim.api.nvim__id(nil)'))
-- API strings from Blobs can work as NUL-terminated C strings
eq(
'Vim(call):E5555: API call: Vim:E15: Invalid expression: ""',
exc_exec('call nvim_eval(v:_null_blob)')
)
eq('Vim(call):E5555: API call: Vim:E15: Invalid expression: ""', exc_exec('call nvim_eval(0z)'))
eq(1, eval('nvim_eval(0z31)'))
eq(0, eval([[type(luaeval('vim.api.nvim__id(1)'))]]))
eq(1, eval([[type(luaeval('vim.api.nvim__id("1")'))]]))
eq(3, eval([[type(luaeval('vim.api.nvim__id({1})'))]]))
eq(4, eval([[type(luaeval('vim.api.nvim__id({foo=1})'))]]))
eq(5, eval([[type(luaeval('vim.api.nvim__id(1.5)'))]]))
eq(6, eval([[type(luaeval('vim.api.nvim__id(true)'))]]))
eq(6, eval([[type(luaeval('vim.api.nvim__id(false)'))]]))
eq(7, eval([[type(luaeval('vim.api.nvim__id(nil)'))]]))
eq(
{ foo = 1, bar = { 42, { { baz = true }, 5 } } },
fn.luaeval('vim.api.nvim__id({foo=1, bar={42, {{baz=true}, 5}}})')
)
eq(true, fn.luaeval('vim.api.nvim__id(vim.api.nvim__id)(true)'))
eq(
42,
exec_lua(function()
local f = vim.api.nvim__id({ 42, vim.api.nvim__id })
return f[2](f[1])
end)
)
end)
it('correctly converts container objects with type_idx to API objects', function()
eq(
5,
eval('type(luaeval("vim.api.nvim__id({[vim.type_idx]=vim.types.float, [vim.val_idx]=0})"))')
)
eq(4, eval([[type(luaeval('vim.api.nvim__id({[vim.type_idx]=vim.types.dictionary})'))]]))
eq(3, eval([[type(luaeval('vim.api.nvim__id({[vim.type_idx]=vim.types.array})'))]]))
eq({}, fn.luaeval('vim.api.nvim__id({[vim.type_idx]=vim.types.array})'))
-- Presence of type_idx makes Vim ignore some keys
eq(
{ 42 },
fn.luaeval(
'vim.api.nvim__id({[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2, [1]=42})'
)
)
eq(
{ foo = 2 },
fn.luaeval(
'vim.api.nvim__id({[vim.type_idx]=vim.types.dictionary, [vim.val_idx]=10, [5]=1, foo=2, [1]=42})'
)
)
eq(
10,
fn.luaeval(
'vim.api.nvim__id({[vim.type_idx]=vim.types.float, [vim.val_idx]=10, [5]=1, foo=2, [1]=42})'
)
)
eq(
{},
fn.luaeval(
'vim.api.nvim__id({[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2})'
)
)
end)
it('correctly converts arrays with type_idx to API objects', function()
eq(3, eval([[type(luaeval('vim.api.nvim__id_array({[vim.type_idx]=vim.types.array})'))]]))
eq({}, fn.luaeval('vim.api.nvim__id_array({[vim.type_idx]=vim.types.array})'))
eq(
{ 42 },
fn.luaeval(
'vim.api.nvim__id_array({[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2, [1]=42})'
)
)
eq(
{ { foo = 2 } },
fn.luaeval(
'vim.api.nvim__id_array({{[vim.type_idx]=vim.types.dictionary, [vim.val_idx]=10, [5]=1, foo=2, [1]=42}})'
)
)
eq(
{ 10 },
fn.luaeval(
'vim.api.nvim__id_array({{[vim.type_idx]=vim.types.float, [vim.val_idx]=10, [5]=1, foo=2, [1]=42}})'
)
)
eq(
{},
fn.luaeval(
'vim.api.nvim__id_array({[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2})'
)
)
eq({}, fn.luaeval('vim.api.nvim__id_array({})'))
eq(3, eval([[type(luaeval('vim.api.nvim__id_array({})'))]]))
end)
it('correctly converts dictionaries with type_idx to API objects', function()
eq(4, eval([[type(luaeval('vim.api.nvim__id_dict({[vim.type_idx]=vim.types.dictionary})'))]]))
eq({}, fn.luaeval('vim.api.nvim__id_dict({[vim.type_idx]=vim.types.dictionary})'))
eq(
{ v = { 42 } },
fn.luaeval(
'vim.api.nvim__id_dict({v={[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2, [1]=42}})'
)
)
eq(
{ foo = 2 },
fn.luaeval(
'vim.api.nvim__id_dict({[vim.type_idx]=vim.types.dictionary, [vim.val_idx]=10, [5]=1, foo=2, [1]=42})'
)
)
eq(
{ v = 10 },
fn.luaeval(
'vim.api.nvim__id_dict({v={[vim.type_idx]=vim.types.float, [vim.val_idx]=10, [5]=1, foo=2, [1]=42}})'
)
)
eq(
{ v = {} },
fn.luaeval(
'vim.api.nvim__id_dict({v={[vim.type_idx]=vim.types.array, [vim.val_idx]=10, [5]=1, foo=2}})'
)
)
-- If API requests dict, then empty table will be the one. This is not
-- the case normally because empty table is an empty array.
eq({}, fn.luaeval('vim.api.nvim__id_dict({})'))
eq(4, eval([[type(luaeval('vim.api.nvim__id_dict({})'))]]))
end)
it('converts booleans in positional args', function()
eq({ '' }, exec_lua [[ return vim.api.nvim_buf_get_lines(0, 0, 10, false) ]])
eq({ '' }, exec_lua [[ return vim.api.nvim_buf_get_lines(0, 0, 10, nil) ]])
eq(
'Index out of bounds',
pcall_err(exec_lua, [[ return vim.api.nvim_buf_get_lines(0, 0, 10, true) ]])
)
eq(
'Index out of bounds',
pcall_err(exec_lua, [[ return vim.api.nvim_buf_get_lines(0, 0, 10, 1) ]])
)
-- this follows lua conventions for bools (not api convention for Boolean)
eq(
'Index out of bounds',
pcall_err(exec_lua, [[ return vim.api.nvim_buf_get_lines(0, 0, 10, 0) ]])
)
eq(
'Index out of bounds',
pcall_err(exec_lua, [[ return vim.api.nvim_buf_get_lines(0, 0, 10, {}) ]])
)
end)
it('converts booleans in optional args', function()
eq({}, exec_lua [[ return vim.api.nvim_exec2("echo 'foobar'", {output=false}) ]])
eq({}, exec_lua [[ return vim.api.nvim_exec2("echo 'foobar'", {}) ]]) -- same as {output=nil}
-- API conventions (not lua conventions): zero is falsy
eq({}, exec_lua [[ return vim.api.nvim_exec2("echo 'foobar'", {output=0}) ]])
eq(
{ output = 'foobar' },
exec_lua [[ return vim.api.nvim_exec2("echo 'foobar'", {output=true}) ]]
)
eq({ output = 'foobar' }, exec_lua [[ return vim.api.nvim_exec2("echo 'foobar'", {output=1}) ]])
eq(
[[Invalid 'output': not a boolean]],
pcall_err(exec_lua, [[ return vim.api.nvim_exec2("echo 'foobar'", {output={}}) ]])
)
end)
it('validation', function()
-- Conversion errors
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'obj': Cannot convert given Lua table]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id({1, foo=42})")]]))
)
-- Errors in number of arguments
eq(
'Vim(call):E5108: Lua: [string "luaeval()"]:1: Expected 1 argument',
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id()")]]))
)
eq(
'Vim(call):E5108: Lua: [string "luaeval()"]:1: Expected 1 argument',
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id(1, 2)")]]))
)
eq(
'Vim(call):E5108: Lua: [string "luaeval()"]:1: Expected 2 arguments',
remove_trace(exc_exec([[call luaeval("vim.api.nvim_set_var(1, 2, 3)")]]))
)
-- Error in argument types
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'name': Expected Lua string]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim_set_var(1, 2)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'start': Expected Lua number]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim_buf_get_lines(0, 'test', 1, false)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'start': Number is not integral]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim_buf_get_lines(0, 1.5, 1, false)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'win': Expected Lua number]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim_win_is_valid(nil)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'flt': Expected Lua number]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id_float('test')")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'flt': Expected Float-like Lua table]],
remove_trace(
exc_exec([[call luaeval("vim.api.nvim__id_float({[vim.type_idx]=vim.types.dictionary})")]])
)
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'arr': Expected Lua table]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id_array(1)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'arr': Expected Array-like Lua table]],
remove_trace(
exc_exec([[call luaeval("vim.api.nvim__id_array({[vim.type_idx]=vim.types.dictionary})")]])
)
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'dct': Expected Lua table]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim__id_dict(1)")]]))
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Invalid 'dct': Expected Dict-like Lua table]],
remove_trace(
exc_exec([[call luaeval("vim.api.nvim__id_dict({[vim.type_idx]=vim.types.array})")]])
)
)
eq(
[[Vim(call):E5108: Lua: [string "luaeval()"]:1: Expected Lua table]],
remove_trace(exc_exec([[call luaeval("vim.api.nvim_set_keymap('', '', '', '')")]]))
)
-- TODO: check for errors with Tabpage argument
-- TODO: check for errors with Window argument
-- TODO: check for errors with Buffer argument
end)
it('accepts any value as API Boolean', function()
eq('', fn.luaeval('vim.api.nvim_replace_termcodes("", vim, false, nil)'))
eq('', fn.luaeval('vim.api.nvim_replace_termcodes("", 0, 1.5, "test")'))
eq(
'',
fn.luaeval('vim.api.nvim_replace_termcodes("", true, {}, {[vim.type_idx]=vim.types.array})')
)
end)
it('serializes sparse arrays in Lua', function()
eq({ [1] = vim.NIL, [2] = 2 }, exec_lua [[ return { [2] = 2 } ]])
end)
end)