test: limit code and comment max length by 80

The patch sets a max length with 80 symbols and fixes tests
exceeding this length.

.luacheckrc

@@ -3,6 +3,11 @@ std = 'luajit'
 -- This fork also introduces a new global for misc API namespace.
 read_globals = { 'misc' }
 
+max_line_length = 80
+max_code_line_length = 80
+max_string_line_length = 80
+max_comment_line_length = 80
+
 -- The `_TARANTOOL` global is often used for skip condition
 -- checks in tests.
 files['test/tarantool-tests/'] = {

test/tarantool-tests/fix-argv-handling.test.lua

@@ -10,7 +10,11 @@ test:plan(1)
 -- to a single empty string if it is empty [1], so the issue is
 -- not reproducible on new kernels.
 --
+-- luacheck: push no max comment line length
+--
 -- [1]: https://lore.kernel.org/all/[email protected]/
+--
+-- luacheck: pop
 
 local utils = require('utils')
 local execlib = require('execlib')

test/tarantool-tests/gh-3196-incorrect-string-length.test.lua

@@ -6,10 +6,13 @@ test:plan(2)
 --
 -- gh-3196: incorrect string length if Lua hash returns 0
 --
+-- luacheck: push no max code line length
+--
 local h = "\x1F\x93\xE2\x1C\xCA\xDE\x28\x08\x26\x01\xED\x0A\x2F\xE4\x21\x02\x97\x77\xD9\x3E"
 test:is(h:len(), 20)
 
 h = "\x0F\x93\xE2\x1C\xCA\xDE\x28\x08\x26\x01\xED\x0A\x2F\xE4\x21\x02\x97\x77\xD9\x3E"
 test:is(h:len(), 20)
+-- luacheck: pop
 
 test:done(true)

test/tarantool-tests/gh-6163-min-max.test.lua

@@ -69,9 +69,13 @@ jit.opt.start('hotloop=1')
 -- pair is emitted, and the result is `NaN`, which is inconsistent with
 -- the result of the non-optimized mcode.
 --
+-- luacheck: push no max comment line length
+--
 -- [1]: https://developer.arm.com/documentation/dui0801/g/A64-Floating-point-Instructions/FCMP
 -- [2]: https://developer.arm.com/documentation/100069/0608/A64-Floating-point-Instructions/FCSEL
 -- [3]: https://developer.arm.com/documentation/dui0068/b/ARM-Instruction-Reference/Conditional-execution
+--
+-- luacheck: pop
 
 local result = {}
 for k = 1, 4 do

test/tarantool-tests/lj-366-strtab-correct-size.test.lua

@@ -22,11 +22,15 @@ local utils = require('utils')
 --
 -- $ readelf --symbols xxx.obj
 --
+-- luacheck: push no max comment line length
+--
 -- Symbol table '.symtab' contains 2 entries:
 --    Num:    Value          Size Type    Bind   Vis      Ndx Name
 --      0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
 --      1: 0000000000000000    66 OBJECT  GLOBAL DEFAULT    4 luaJIT_BC_lango_team
 --
+-- luacheck: pop
+--
 -- and to display the information contained in the file's section
 -- headers, if it has any. For our purposes, we are interested in
 -- .symtab section, so other sections are snipped in the output:
@@ -143,7 +147,8 @@ end
 -- and symtab sections.
 local function read_elf(elf_content)
   local ELFobj_type = ffi.typeof(is64 and 'ELF64obj *' or 'ELF32obj *')
-  local ELFsectheader_type = ffi.typeof(is64 and 'ELF64sectheader *' or 'ELF32sectheader *')
+  local ELFsectheader_type = ffi.typeof(is64 and 'ELF64sectheader *' or
+                                        'ELF32sectheader *')
   local elf = ffi.cast(ELFobj_type, elf_content)
   local symtab_hdr, strtab_hdr
   -- Iterate by section headers.
@@ -178,7 +183,8 @@ assert(sym_cnt ~= 0, 'number of symbols is zero')
 test:is(strtab_size, EXPECTED_STRTAB_SIZE, 'check .strtab size')
 test:is(strtab_offset, EXPECTED_STRTAB_OFFSET, 'check .strtab offset')
 
-local strtab_str = string.sub(elf_content, strtab_offset, strtab_offset + strtab_size)
+local strtab_str = string.sub(elf_content, strtab_offset,
+                              strtab_offset + strtab_size)
 
 local strtab_p = ffi.cast('char *', strtab_str)
 local sym_is_found = false

test/tarantool-tests/lj-494-table-chain-infinite-loop.test.lua

@@ -172,6 +172,7 @@ collectgarbage()
 for c, v in pairs(victims) do
     str_hash(v)[0] = orig_hash[c]
 end
-test:ok(true, "table keys collisions are resolved properly (no assertions failed)")
+test:ok(true,
+        "table keys collisions are resolved properly (no assertions failed)")
 
 test:done(true)

test/tarantool-tests/lj-688-snap-ir-rename.test.lua

@@ -41,7 +41,9 @@ jit.opt.start('hotloop=1')
 -- platform-agnostic, there is no real necessity to test it
 -- against ARM/ARM64 separately.
 --
+-- luacheck: push no max comment line length
 -- See also https://drive.google.com/file/d/1iYkFx3F0DOtB9o9ykWfCEm-OdlJNCCL0/view?usp=share_link
+-- luacheck: pop
 
 
 local vals = {-0.1, 0.1, -0.1, 0.1}

test/tarantool-tests/lj-819-fix-missing-uclo.test.lua

@@ -100,7 +100,8 @@ local f = missing_uclo()
 local res = f()
 -- Without a patch we don't get here a function, because upvalue isn't closed
 -- as desirable.
-test:ok(type(res) == 'function', 'virtual machine consistency: type of returned value is correct')
+test:ok(type(res) == 'function',
+        'virtual machine consistency: type of returned value is correct')
 
 -- Make JIT compiler aggressive.
 jit.opt.start('hotloop=1')
@@ -110,6 +111,7 @@ f()
 f = missing_uclo()
 local _
 _, res = pcall(f)
-test:ok(type(res) == 'function', 'consistency on compilation: type of returned value is correct')
+test:ok(type(res) == 'function',
+        'consistency on compilation: type of returned value is correct')
 
 test:done(true)

test/tarantool-tests/lj-918-fma-numerical-accuracy-jit.test.lua

@@ -22,9 +22,13 @@ local _2pow52 = 2 ^ 52
 -- double rounding. The numbers from the original issue are good
 -- enough.
 --
+-- luacheck: push no max comment line length
+--
 -- [1]:https://developer.arm.com/documentation/dui0801/g/A64-Floating-point-Instructions/FMSUB
 -- [2]:https://en.wikipedia.org/wiki/Multiply%E2%80%93accumulate_operation
 --
+-- luacheck: pop
+--
 -- IEEE754 components to double:
 -- sign * (2 ^ (exp - 1023)) * (mantissa / _2pow52 + normal).
 local a = 1 * (2 ^ (1083 - 1023)) * (4080546448249347 / _2pow52 + 1)

test/tarantool-tests/lj-918-fma-numerical-accuracy.test.lua

@@ -20,9 +20,13 @@ local _2pow52 = 2 ^ 52
 -- double rounding. The numbers from the original issue are good
 -- enough.
 --
+-- luacheck: push no max comment line length
+--
 -- [1]:https://developer.arm.com/documentation/dui0801/g/A64-Floating-point-Instructions/FMSUB
 -- [2]:https://en.wikipedia.org/wiki/Multiply%E2%80%93accumulate_operation
 --
+-- luacheck: pop
+--
 -- IEEE754 components to double:
 -- sign * (2 ^ (exp - 1023)) * (mantissa / _2pow52 + normal).
 local a = 1 * (2 ^ (1083 - 1023)) * (4080546448249347 / _2pow52 + 1)

test/tarantool-tests/or-144-gc64-asmref-l.test.lua

@@ -5,11 +5,15 @@ local test = tap.test('or-144-gc64-asmref-l'):skipcond({
 
 test:plan(1)
 
+-- luacheck: push no max comment line length
+--
 -- Test file to demonstrate LuaJIT `IR_LREF` assembling incorrect
 -- behaviour.
 -- See also:
 -- * https://github.com/openresty/lua-resty-core/issues/144.
 -- * https://www.freelists.org/post/luajit/Consistent-SEGV-on-x64-with-the-latest-LuaJIT-v21-GC64-mode.
+--
+-- luacheck: pop
 
 jit.opt.start('hotloop=1')