Files
neovim/test/functional/lua/mpack_spec.lua
Justin M. Keyes 6d8c8b18d5 test(harness): migrate away from magic globals
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`.
2026-07-21 13:22:39 +02:00

71 lines
2.5 KiB
Lua

-- Test suite for testing interactions with API bindings
local t = require('test.testutil')
local n = require('test.functional.testnvim')()
local describe, it, before_each = t.describe, t.it, t.before_each
local clear = n.clear
local eq = t.eq
local exec_lua = n.exec_lua
describe('lua vim.mpack', function()
before_each(clear)
it('encodes vim.NIL', function()
eq(
{ true, true, true, true },
exec_lua(function()
local var = vim.mpack.decode(vim.mpack.encode({ 33, vim.NIL, 77 }))
return { var[1] == 33, var[2] == vim.NIL, var[3] == 77, var[4] == nil }
end)
)
end)
it('encodes vim.empty_dict()', function()
eq(
{ { {}, 'foo', {} }, true, false },
exec_lua(function()
local var = vim.mpack.decode(vim.mpack.encode({ {}, 'foo', vim.empty_dict() }))
return { var, vim.islist(var[1]), vim.islist(var[3]) }
end)
)
end)
it('encodes negative integers at type boundaries correctly #37202', function()
-- Test boundary values between int8/int16/int32
-- int8 range: -128 to -33 (fixint handles -32 to -1)
-- int16 range: -32768 to -129
-- int32 range: -2147483648 to -32769
local result = exec_lua(function()
local tests = {
{ -128, -128 }, -- int8 boundary (minimum int8)
{ -129, -129 }, -- int16 boundary (one past int8)
{ -32768, -32768 }, -- int16 boundary (minimum int16)
{ -32769, -32769 }, -- int32 boundary (one past int16)
}
local results = {}
for _, test in ipairs(tests) do
local input, expected = test[1], test[2]
local decoded = vim.mpack.decode(vim.mpack.encode(input))
table.insert(results, { input = input, decoded = decoded, ok = decoded == expected })
end
return results
end)
for _, r in ipairs(result) do
eq(true, r.ok, string.format('encode/decode %d returned %d', r.input, r.decoded))
end
end)
it('encodes dict keys of length 20-31 as fixstr #32784', function()
-- MessagePack fixstr format: 0xa0 | length (for lengths 0-31)
-- Before #36737, strings 20-31 bytes were incorrectly encoded as str8 (0xd9, len)
for len = 20, 31 do
local expected_header = string.char(0xa0 + len) -- fixstr header
local result = exec_lua(function(keylen)
local key = string.rep('x', keylen)
return vim.mpack.encode({ [key] = 1 })
end, len)
-- Byte 1 is fixmap header (0x81), byte 2 should be fixstr header for the key
eq(expected_header, result:sub(2, 2), 'dict key length ' .. len .. ' should use fixstr')
end
end)
end)