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local t = require('test.unit.testutil')
local cimport = t.cimport
local itp = t.gen_itp(it)
local lib =
cimport('./src/nvim/msgpack_rpc/unpacker.h', './src/nvim/memory.h', './src/mpack/conv.h')
local ffi = t.ffi
local eq = t.eq
local to_cstr = t.to_cstr
--- @class Unpacker
--- @field read_ptr ffi.cdata*
--- @field read_size number
--- @alias Unpacker* table<number, Unpacker>
--- @return Unpacker* unpacker `unpacker[0]` to dereference
local function make_unpacker()
return ffi.gc(ffi.cast('Unpacker*', lib.xcalloc(1, ffi.sizeof('Unpacker'))), function(unpacker)
lib.unpacker_teardown(unpacker)
lib.xfree(unpacker)
end)
end
--- @param unpacker Unpacker*
--- @param data string
--- @param size number? *default: data:len()*
local function unpacker_goto(unpacker, data, size)
unpacker[0].read_ptr = to_cstr(data)
unpacker[0].read_size = size or data:len()
end
--- @param unpacker Unpacker*
--- @return boolean
local function unpacker_advance(unpacker)
return lib.unpacker_advance(unpacker)
end
describe('msgpack', function()
describe('unpacker', function()
itp(
'does not crash when paused between `cells` and `wrap` params of `grid_line` #25184',
function()
-- [kMessageTypeNotification, "redraw", [
-- ["grid_line",
-- [2, 0, 0, [[" " , 0, 77]], false]
-- ]
-- ]]
local payload =
'\x93\x02\xa6\x72\x65\x64\x72\x61\x77\x91\x92\xa9\x67\x72\x69\x64\x5f\x6c\x69\x6e\x65\x95\x02\x00\x00\x91\x93\xa1\x20\x00\x4d\xc2'
local unpacker = make_unpacker()
lib.unpacker_init(unpacker)
unpacker_goto(unpacker, payload, payload:len() - 1)
local finished = unpacker_advance(unpacker)
eq(false, finished)
unpacker[0].read_size = unpacker[0].read_size + 1
finished = unpacker_advance(unpacker)
eq(true, finished)
end
)
itp('does not crash when parsing grid_line event with 0 `cells` #25184', function()
local unpacker = make_unpacker()
lib.unpacker_init(unpacker)
unpacker_goto(
unpacker,
-- [kMessageTypeNotification, "redraw", [
-- ["grid_line",
-- [2, 0, 0, [], false]
-- ]
-- ]]
'\x93\x02\xa6\x72\x65\x64\x72\x61\x77\x91\x92\xa9\x67\x72\x69\x64\x5f\x6c\x69\x6e\x65\x95\x02\x00\x00\x90\xc2'
)
local finished = unpacker_advance(unpacker)
eq(true, finished)
end)
end)
end)
describe('libmpack', function()
describe('mpack_pack_number', function()
itp('token length at negative integer boundaries #37202', function()
-- tok.length is the byte count for the integer value (not including the msgpack type prefix byte).
-- int8 min: -128 → 1 byte
local tok = lib.mpack_pack_number(-128)
eq(lib.MPACK_TOKEN_SINT, tok.type)
eq(1, tok.length)
-- one past int8: -129 → 2 bytes (int16)
tok = lib.mpack_pack_number(-129)
eq(lib.MPACK_TOKEN_SINT, tok.type)
eq(2, tok.length)
-- int16 min: -32768 → 2 bytes
tok = lib.mpack_pack_number(-32768)
eq(lib.MPACK_TOKEN_SINT, tok.type)
eq(2, tok.length)
-- one past int16: -32769 → 4 bytes (int32)
tok = lib.mpack_pack_number(-32769)
eq(lib.MPACK_TOKEN_SINT, tok.type)
eq(4, tok.length)
end)
end)
end)
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