Start moving test suite from tape => jest

1 files changed, 873 insertions, 0 deletions

diff --git a/test/test-suite/ltests.js b/test/test-suite/ltests.js
new file mode 100644
index 0000000..6fc086c
--- /dev/null
+++ b/test/test-suite/ltests.js
@@ -0,0 +1,873 @@
+"use strict";
+
+const assert   = require("assert");
+
+const lua      = require('../../src/lua.js');
+const lauxlib  = require('../../src/lauxlib.js');
+const {
+    luastring_eq,
+    luastring_indexOf,
+    to_jsstring,
+    to_luastring
+} = require("../../src/fengaricore.js");
+const ljstype  = require('../../src/ljstype.js');
+const lopcodes = require('../../src/lopcodes.js');
+const { pushobj2s } = require('../../src/lobject.js');
+const sprintf  = require('sprintf-js').sprintf;
+
+const delimits = [" ", "\t", "\n", ",", ";"].map(e => e.charCodeAt(0));
+
+const skip = function(pc) {
+    for (;;) {
+        if (pc.script[pc.offset] !== 0 && pc.offset < pc.script.length && delimits.indexOf(pc.script[pc.offset]) >= 0)
+            pc.offset++;
+        else if (pc.script[pc.offset] === '#'.charCodeAt(0)) {
+            while (pc.script[pc.offset] !== '\n'.charCodeAt(0) && pc.script[pc.offset] !== 0 && pc.offset < pc.script.length)
+                pc.offset++;
+        } else break;
+    }
+};
+
+const getnum = function(L, L1, pc) {
+    let res = 0;
+    let sig = 1;
+    skip(pc);
+    if (pc.script[pc.offset] === '.'.charCodeAt(0)) {
+        res = lua.lua_tointeger(L1, -1);
+        lua.lua_pop(L1, 1);
+        pc.offset++;
+        return res;
+    } else if (pc.script[pc.offset] === '*'.charCodeAt(0)) {
+        res = lua.lua_gettop(L1);
+        pc.offset++;
+        return res;
+    }
+    else if (pc.script[pc.offset] === '-'.charCodeAt(0)) {
+        sig = -1;
+        pc.offset++;
+    }
+    if (!ljstype.lisdigit(pc.script[pc.offset]))
+        lauxlib.luaL_error(L, to_luastring("number expected (%s)"), pc.script);
+    while (ljstype.lisdigit(pc.script[pc.offset])) res = res*10 + pc.script[pc.offset++] - '0'.charCodeAt(0);
+    return sig*res;
+};
+
+const getstring = function(L, buff, pc) {
+    let i = 0;
+    skip(pc);
+    if (pc.script[pc.offset] === '"'.charCodeAt(0) || pc.script[pc.offset] === '\''.charCodeAt(0)) {  /* quoted string? */
+        let quote = pc.script[pc.offset++];
+        while (pc.script[pc.offset] !== quote) {
+            if (pc.script[pc.offset] === 0 || pc.offset >= pc.script.length)
+                lauxlib.luaL_error(L, to_luastring("unfinished string in JS script", true));
+            buff[i++] = pc.script[pc.offset++];
+        }
+        pc.offset++;
+    } else {
+        while (pc.script[pc.offset] !== 0 && pc.offset < pc.script.length && delimits.indexOf(pc.script[pc.offset]) < 0)
+            buff[i++] = pc.script[pc.offset++];
+    }
+    return buff.subarray(0, i);
+};
+
+const getindex = function(L, L1, pc) {
+    skip(pc);
+    switch (pc.script[pc.offset++]) {
+        case 'R'.charCodeAt(0): return lua.LUA_REGISTRYINDEX;
+        case 'G'.charCodeAt(0): return lauxlib.luaL_error(L, to_luastring("deprecated index 'G'", true));
+        case 'U'.charCodeAt(0): return lua.lua_upvalueindex(getnum(L, L1, pc));
+        default: pc.offset--; return getnum(L, L1, pc);
+    }
+};
+
+const codes = ["OK", "YIELD", "ERRRUN", "ERRSYNTAX", "ERRMEM", "ERRGCMM", "ERRERR"].map(e => to_luastring(e));
+
+const pushcode = function(L, code) {
+    lua.lua_pushstring(L, codes[code]);
+};
+
+const printstack = function(L) {
+    let n = lua.lua_gettop(L);
+    for (let i = 1; i <= n; i++) {
+        console.log("${i}: %{to_jsstring(lauxlib.luaL_tolstring(L, i, null))}\n");
+        lua.lua_pop(L, 1);
+    }
+    console.log("");
+};
+
+/*
+** arithmetic operation encoding for 'arith' instruction
+** LUA_OPIDIV  -> \
+** LUA_OPSHL   -> <
+** LUA_OPSHR   -> >
+** LUA_OPUNM   -> _
+** LUA_OPBNOT  -> !
+*/
+const ops = "+-*%^/\\&|~<>_!".split('').map(e => e.charCodeAt(0));
+
+const runJS = function(L, L1, pc) {
+    let buff = new Uint8Array(300);
+    let status = 0;
+    if (!pc || !pc.script) return lauxlib.luaL_error(L, to_luastring("attempt to runJS null script"));
+    for (;;) {
+        let inst = to_jsstring(getstring(L, buff, pc));
+        if (inst.length === 0) return 0;
+        switch (inst) {
+            case "absindex": {
+                lua.lua_pushnumber(L1, lua.lua_absindex(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "append": {
+                let t = getindex(L, L1, pc);
+                let i = lua.lua_rawlen(L1, t);
+                lua.lua_rawseti(L1, t, i + 1);
+                break;
+            }
+            case "arith": {
+                let op;
+                skip(pc);
+                op = ops.indexOf(pc.script[pc.offset++]);
+                lua.lua_arith(L1, op);
+                break;
+            }
+            case "call": {
+                let narg = getnum(L, L1, pc);
+                let nres = getnum(L, L1, pc);
+                lua.lua_call(L1, narg, nres);
+                break;
+            }
+            case "callk": {
+                let narg = getnum(L, L1, pc);
+                let nres = getnum(L, L1, pc);
+                let i = getindex(L, L1, pc);
+                lua.lua_callk(L1, narg, nres, i, Cfunck);
+                break;
+            }
+            case "checkstack": {
+                let sz = getnum(L, L1, pc);
+                let msg = getstring(L, buff, pc);
+                if (msg.length === 0)
+                    msg = null;  /* to test 'luaL_checkstack' with no message */
+                lauxlib.luaL_checkstack(L1, sz, msg);
+                break;
+            }
+            case "compare": {
+                let opt = getstring(L, buff, pc);  /* EQ, LT, or LE */
+                let op = (opt[0] === 'E'.charCodeAt(0))
+                    ? lua.LUA_OPEQ
+                    : (opt[1] === 'T'.charCodeAt(0)) ? lua.LUA_OPLT : lua.LUA_OPLE;
+                let a = getindex(L, L1, pc);
+                let b = getindex(L, L1, pc);
+                lua.lua_pushboolean(L1, lua.lua_compare(L1, a, b, op));
+                break;
+            }
+            case "concat": {
+                lua.lua_concat(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "copy": {
+                let f = getindex(L, L1, pc);
+                lua.lua_copy(L1, f, getindex(L, L1, pc));
+                break;
+            }
+            case "func2num": {
+                let func = lua.lua_tocfunction(L1, getindex(L, L1, pc));
+                if (func === null) func = 0;
+                else if (func.id) func = func.id;
+                lua.lua_pushnumber(L1, func);
+                break;
+            }
+            case "getfield": {
+                let t = getindex(L, L1, pc);
+                lua.lua_getfield(L1, t, getstring(L, buff, pc));
+                break;
+            }
+            case "getglobal": {
+                lua.lua_getglobal(L1, getstring(L, buff, pc));
+                break;
+            }
+            case "getmetatable": {
+                if (lua.lua_getmetatable(L1, getindex(L, L1, pc)) === 0)
+                    lua.lua_pushnil(L1);
+                break;
+            }
+            case "gettable": {
+                lua.lua_gettable(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "gettop": {
+                lua.lua_pushinteger(L1, lua.lua_gettop(L1));
+                break;
+            }
+            case "gsub": {
+                let a = getnum(L, L1, pc);
+                let b = getnum(L, L1, pc);
+                let c = getnum(L, L1, pc);
+                lauxlib.luaL_gsub(L1, lua.lua_tostring(L1, a), lua.lua_tostring(L1, b), lua.lua_tostring(L1, c));
+                break;
+            }
+            case "insert": {
+                lua.lua_insert(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "iscfunction": {
+                lua.lua_pushboolean(L1, lua.lua_iscfunction(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isfunction": {
+                lua.lua_pushboolean(L1, lua.lua_isfunction(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isnil": {
+                lua.lua_pushboolean(L1, lua.lua_isnil(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isnull": {
+                lua.lua_pushboolean(L1, lua.lua_isnone(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isnumber": {
+                lua.lua_pushboolean(L1, lua.lua_isnumber(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isstring": {
+                lua.lua_pushboolean(L1, lua.lua_isstring(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "istable": {
+                lua.lua_pushboolean(L1, lua.lua_istable(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isudataval": {
+                lua.lua_pushboolean(L1, lua.lua_islightuserdata(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "isuserdata": {
+                lua.lua_pushboolean(L1, lua.lua_isuserdata(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "len": {
+                lua.lua_len(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "Llen": {
+                lua.lua_pushinteger(L1, lauxlib.luaL_len(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "loadfile": {
+                lauxlib.luaL_loadfile(L1, lauxlib.luaL_checkstring(L1, getnum(L, L1, pc)));
+                break;
+            }
+            case "loadstring": {
+                let s = lauxlib.luaL_checkstring(L1, getnum(L, L1, pc));
+                lauxlib.luaL_loadstring(L1, s);
+                break;
+            }
+            case "newmetatable": {
+                lua.lua_pushboolean(L1, lauxlib.luaL_newmetatable(L1, getstring(L, buff, pc)));
+                break;
+            }
+            case "newtable": {
+                lua.lua_newtable(L1);
+                break;
+            }
+            case "newthread": {
+                lua.lua_newthread(L1);
+                break;
+            }
+            case "newuserdata": {
+                lua.lua_newuserdata(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "next": {
+                lua.lua_next(L1, -2);
+                break;
+            }
+            case "objsize": {
+                lua.lua_pushinteger(L1, lua.lua_rawlen(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "pcall": {
+                let narg = getnum(L, L1, pc);
+                let nres = getnum(L, L1, pc);
+                status = lua.lua_pcall(L1, narg, nres, getnum(L, L1, pc));
+                break;
+            }
+            case "pcallk": {
+                let narg = getnum(L, L1, pc);
+                let nres = getnum(L, L1, pc);
+                let i = getindex(L, L1, pc);
+                status = lua.lua_pcallk(L1, narg, nres, 0, i, Cfunck);
+                break;
+            }
+            case "pop": {
+                lua.lua_pop(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "print": {
+                let n = getnum(L, L1, pc);
+                if (n !== 0) {
+                    console.log(`${lauxlib.luaL_tojsstring(L1, n, null)}\n`);
+                    lua.lua_pop(L1, 1);
+                }
+                else printstack(L1);
+                break;
+            }
+            case "pushbool": {
+                lua.lua_pushboolean(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "pushcclosure": {
+                lua.lua_pushcclosure(L1, testJS, getnum(L, L1, pc));
+                break;
+            }
+            case "pushint": {
+                lua.lua_pushinteger(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "pushnil": {
+                lua.lua_pushnil(L1);
+                break;
+            }
+            case "pushnum": {
+                lua.lua_pushnumber(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "pushstatus": {
+                pushcode(L1, status);
+                break;
+            }
+            case "pushstring": {
+                lua.lua_pushstring(L1, getstring(L, buff, pc));
+                break;
+            }
+            case "pushupvalueindex": {
+                lua.lua_pushinteger(L1, lua.lua_upvalueindex(getnum(L, L1, pc)));
+                break;
+            }
+            case "pushvalue": {
+                lua.lua_pushvalue(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "rawgeti": {
+                let t = getindex(L, L1, pc);
+                lua.lua_rawgeti(L1, t, getnum(L, L1, pc));
+                break;
+            }
+            case "rawgetp": {
+                let t = getindex(L, L1, pc);
+                lua.lua_rawgetp(L1, t, getnum(L, L1, pc));
+                break;
+            }
+            case "rawsetp": {
+                let t = getindex(L, L1, pc);
+                lua.lua_rawsetp(L1, t, getnum(L, L1, pc));
+                break;
+            }
+            case "remove": {
+                lua.lua_remove(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "replace": {
+                lua.lua_replace(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "resume": {
+                let i = getindex(L, L1, pc);
+                status = lua.lua_resume(lua.lua_tothread(L1, i), L, getnum(L, L1, pc));
+                break;
+            }
+            case "return": {
+                let n = getnum(L, L1, pc);
+                if (L1 != L) {
+                    let i;
+                    for (i = 0; i < n; i++)
+                        lua.lua_pushstring(L, lua.lua_tostring(L1, -(n - i)));
+                }
+                return n;
+            }
+            case "rotate": {
+                let i = getindex(L, L1, pc);
+                lua.lua_rotate(L1, i, getnum(L, L1, pc));
+                break;
+            }
+            case "setfield": {
+                let t = getindex(L, L1, pc);
+                lua.lua_setfield(L1, t, getstring(L, buff, pc));
+                break;
+            }
+            case "setglobal": {
+                lua.lua_setglobal(L1, getstring(L, buff, pc));
+                break;
+            }
+            case "sethook": {
+                let mask = getnum(L, L1, pc);
+                let count = getnum(L, L1, pc);
+                sethookaux(L1, mask, count, getstring(L, buff, pc));
+                break;
+            }
+            case "setmetatable": {
+                lua.lua_setmetatable(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "settable": {
+                lua.lua_settable(L1, getindex(L, L1, pc));
+                break;
+            }
+            case "settop": {
+                lua.lua_settop(L1, getnum(L, L1, pc));
+                break;
+            }
+            case "testudata": {
+                let i = getindex(L, L1, pc);
+                lua.lua_pushboolean(L1, lauxlib.luaL_testudata(L1, i, getstring(L, buff, pc)) !== null);
+                break;
+            }
+            case "error": {
+                lua.lua_error(L1);
+                break;
+            }
+            case "throw": {
+                throw new Error();
+            }
+            case "tobool": {
+                lua.lua_pushboolean(L1, lua.lua_toboolean(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "tocfunction": {
+                lua.lua_pushcfunction(L1, lua.lua_tocfunction(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "tointeger": {
+                lua.lua_pushinteger(L1, lua.lua_tointeger(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "tonumber": {
+                lua.lua_pushnumber(L1, lua.lua_tonumber(L1, getindex(L, L1, pc)));
+                break;
+            }
+            case "topointer": {
+                let p = lua.lua_topointer(L1, getindex(L, L1, pc));
+                if (p === null) p = 0;
+                else if (p.id) p = p.id;
+                lua.lua_pushnumber(L1, p);  /* in ltests.c, p is casted to a size_t so NULL gives 0 */
+                break;
+            }
+            case "tostring": {
+                let s = lua.lua_tostring(L1, getindex(L, L1, pc));
+                let s1 = lua.lua_pushstring(L1, s);
+                assert(luastring_eq(s, s1));
+                break;
+            }
+            case "type": {
+                lua.lua_pushstring(L1, lauxlib.luaL_typename(L1, getnum(L, L1, pc)));
+                break;
+            }
+            case "xmove": {
+                let f = getindex(L, L1, pc);
+                let t = getindex(L, L1, pc);
+                let fs = (f === 0) ? L1 : lua.lua_tothread(L1, f);
+                let ts = (t === 0) ? L1 : lua.lua_tothread(L1, t);
+                let n = getnum(L, L1, pc);
+                if (n === 0) n = lua.lua_gettop(fs);
+                lua.lua_xmove(fs, ts, n);
+                break;
+            }
+            case "yield": {
+                return lua.lua_yield(L1, getnum(L, L1, pc));
+            }
+            case "yieldk": {
+                let nres = getnum(L, L1, pc);
+                let i = getindex(L, L1, pc);
+                return lua.lua_yieldk(L1, nres, i, Cfunck);
+            }
+            default:
+                lauxlib.luaL_error(L, to_luastring("unknown instruction %s"), buff);
+        }
+    }
+};
+
+
+const testJS = function(L) {
+    let L1;
+    let pc;
+    if (lua.lua_isuserdata(L, 1)) {
+        L1 = getstate(L);
+        pc = lauxlib.luaL_checkstring(L, 2);
+    } else if (lua.lua_isthread(L, 1)) {
+        L1 = lua.lua_tothread(L, 1);
+        pc = lauxlib.luaL_checkstring(L, 2);
+    } else {
+        L1 = L;
+        pc = lauxlib.luaL_checkstring(L, 1);
+    }
+    return runJS(L, L1, { script: pc, offset: 0 });
+};
+
+const upvalue = function(L) {
+    let n = lauxlib.luaL_checkinteger(L, 2);
+    lauxlib.luaL_checktype(L, 1, lua.LUA_TFUNCTION);
+    if (lua.lua_isnone(L, 3)) {
+        let name = lua.lua_getupvalue(L, 1, n);
+        if (name === null) return 0;
+        lua.lua_pushstring(L, name);
+        return 2;
+    }
+    else {
+        let name = lua.lua_setupvalue(L, 1, n);
+        lua.lua_pushstring(L, name);
+        return 1;
+    }
+};
+
+const pushuserdata = function(L) {
+    let u = lauxlib.luaL_checkinteger(L, 1);
+    lua.lua_pushlightuserdata(L, u);
+    return 1;
+};
+
+const udataval = function(L) {
+    lua.lua_pushinteger(L, lua.lua_touserdata(L, 1));
+    return 1;
+};
+
+const d2s = function(L) {
+    let d = lauxlib.luaL_checknumber(L, 1);
+    let b = new ArrayBuffer(8);
+    new DataView(b).setFloat64(0, d, true);
+    lua.lua_pushlstring(L, new Uint8Array(b), 8);
+    return 1;
+};
+
+const s2d = function(L) {
+    let b = lauxlib.luaL_checkstring(L, 1);
+    let dv = new DataView(b.buffer);
+    lua.lua_pushnumber(L, dv.getFloat64(0, true));
+    return 1;
+};
+
+const newstate = function(L) {
+    let L1 = lua.lua_newstate();
+    if (L1) {
+        lua.lua_atpanic(L1, tpanic);
+        lua.lua_pushlightuserdata(L, L1);
+    }
+    else
+        lua.lua_pushnil(L);
+    return 1;
+};
+
+const getstate = function(L) {
+    let L1 = lua.lua_touserdata(L, 1);
+    lauxlib.luaL_argcheck(L, L1 !== null, 1, "state expected");
+    return L1;
+};
+
+const luaopen_base      = require("../../src/lbaselib.js").luaopen_base;
+const luaopen_coroutine = require("../../src/lcorolib.js").luaopen_coroutine;
+const luaopen_debug     = require("../../src/ldblib.js").luaopen_debug;
+const luaopen_io        = require("../../src/liolib.js").luaopen_io;
+const luaopen_os        = require("../../src/loslib.js").luaopen_os;
+const luaopen_math      = require("../../src/lmathlib.js").luaopen_math;
+const luaopen_string    = require("../../src/lstrlib.js").luaopen_string;
+const luaopen_table     = require("../../src/ltablib.js").luaopen_table;
+const luaopen_package   = require("../../src/loadlib.js").luaopen_package;
+
+const loadlib = function(L) {
+    let libs = {
+        "_G": luaopen_base,
+        "coroutine": luaopen_coroutine,
+        "debug": luaopen_debug,
+        "io": luaopen_io,
+        "os": luaopen_os,
+        "math": luaopen_math,
+        "string": luaopen_string,
+        "table": luaopen_table
+    };
+    let L1 = getstate(L);
+    lauxlib.luaL_requiref(L1, to_luastring("package", true), luaopen_package, 0);
+    assert(lua.lua_type(L1, -1) == lua.LUA_TTABLE);
+    /* 'requiref' should not reload module already loaded... */
+    lauxlib.luaL_requiref(L1, to_luastring("package", true), null, 1);    /* seg. fault if it reloads */
+    /* ...but should return the same module */
+    assert(lua.lua_compare(L1, -1, -2, lua.LUA_OPEQ));
+    lauxlib.luaL_getsubtable(L1, lua.LUA_REGISTRYINDEX, lauxlib.LUA_PRELOAD_TABLE);
+    for (let name in libs) {
+        lua.lua_pushcfunction(L1, libs[name]);
+        lua.lua_setfield(L1, -2, to_luastring(name, true));
+    }
+    return 0;
+};
+
+const closestate = function(L) {
+    let L1 = getstate(L);
+    lua.lua_close(L1);
+    return 0;
+};
+
+const doremote = function(L) {
+    let L1 = getstate(L);
+    let lcode;
+    let code = lauxlib.luaL_checklstring(L, 2, lcode);
+    let status;
+    lua.lua_settop(L1, 0);
+    status = lauxlib.luaL_loadbuffer(L1, code, lcode, code);
+    if (status === lua.LUA_OK)
+        status = lua.lua_pcall(L1, 0, lua.LUA_MULTRET, 0);
+    if (status !== lua.LUA_OK) {
+        lua.lua_pushnil(L);
+        lua.lua_pushstring(L, lua.lua_tostring(L1, -1));
+        lua.lua_pushinteger(L, status);
+        return 3;
+    }
+    else {
+        let i = 0;
+        while (!lua.lua_isnone(L1, ++i))
+            lua.lua_pushstring(L, lua.lua_tostring(L1, i));
+        lua.lua_pop(L1, i-1);
+        return i-1;
+    }
+};
+
+const tpanic = function(L) {
+    console.error(`PANIC: unprotected error in call to Lua API (${lua.lua_tojsstring(L, -1)})\n`);
+    return process.exit(1);  /* do not return to Lua */
+};
+
+const newuserdata = function(L) {
+    lua.lua_newuserdata(L, lauxlib.luaL_checkinteger(L, 1));
+    return 1;
+};
+
+/*
+** C hook that runs the C script stored in registry.C_HOOK[L]
+*/
+const Chook = function(L, ar) {
+    let scpt;
+    let events = ["call", "ret", "line", "count", "tailcall"].map(e => to_luastring(e));
+    lua.lua_getfield(L, lua.LUA_REGISTRYINDEX, to_luastring("JS_HOOK", true));
+    lua.lua_pushlightuserdata(L, L);
+    lua.lua_gettable(L, -2);  /* get C_HOOK[L] (script saved by sethookaux) */
+    scpt = lua.lua_tostring(L, -1);  /* not very religious (string will be popped) */
+    lua.lua_pop(L, 2);  /* remove C_HOOK and script */
+    lua.lua_pushstring(L, events[ar.event]);  /* may be used by script */
+    lua.lua_pushinteger(L, ar.currentline);  /* may be used by script */
+    runJS(L, L, { script: scpt, offset: 0 });  /* run script from C_HOOK[L] */
+};
+
+class Aux {
+    constructor() {
+        this.paniccode = null;
+        this.L = null;
+    }
+}
+
+/*
+** does a long-jump back to "main program".
+*/
+const panicback = function(L) {
+    let b = new Aux();
+    lua.lua_checkstack(L, 1);    /* open space for 'Aux' struct */
+    lua.lua_getfield(L, lua.LUA_REGISTRYINDEX, to_luastring("_jmpbuf", true));    /* get 'Aux' struct */
+    b = lua.lua_touserdata(L, -1);
+    lua.lua_pop(L, 1);    /* remove 'Aux' struct */
+    runJS(b.L, L, { script: b.paniccode, offset: 0 });    /* run optional panic code */
+    throw 1;
+};
+
+const checkpanic = function(L) {
+    let b = new Aux();
+    let code = lauxlib.luaL_checkstring(L, 1);
+    b.paniccode = lauxlib.luaL_optstring(L, 2, "");
+    b.L = L;
+    let L1 = lua.lua_newstate();    /* create new state */
+    if (L1 === null) {    /* error? */
+        lua.lua_pushnil(L);
+        return 1;
+    }
+    lua.lua_atpanic(L1, panicback);    /* set its panic function */
+    lua.lua_pushlightuserdata(L1, b);
+    lua.lua_setfield(L1, lua.LUA_REGISTRYINDEX, to_luastring("_jmpbuf", true));    /* store 'Aux' struct */
+    try {    /* set jump buffer */
+        runJS(L, L1, { script: code, offset: 0 });    /* run code unprotected */
+        lua.lua_pushliteral(L, "no errors");
+    } catch (e) {    /* error handling */
+        /* move error message to original state */
+        lua.lua_pushstring(L, lua.lua_tostring(L1, -1));
+    }
+    lua.lua_close(L1);
+    return 1;
+};
+
+/*
+** sets 'registry.C_HOOK[L] = scpt' and sets 'Chook' as a hook
+*/
+const sethookaux = function(L, mask, count, scpt) {
+    if (scpt.length <= 0) {  /* no script? */
+        lua.lua_sethook(L, null, 0, 0);  /* turn off hooks */
+        return;
+    }
+    lua.lua_getfield(L, lua.LUA_REGISTRYINDEX, to_luastring("JS_HOOK", true));  /* get C_HOOK table */
+    if (!lua.lua_istable(L, -1)) {  /* no hook table? */
+        lua.lua_pop(L, 1);  /* remove previous value */
+        lua.lua_newtable(L);  /* create new C_HOOK table */
+        lua.lua_pushvalue(L, -1);
+        lua.lua_setfield(L, lua.LUA_REGISTRYINDEX, to_luastring("JS_HOOK", true));  /* register it */
+    }
+    lua.lua_pushlightuserdata(L, L);
+    lua.lua_pushstring(L, scpt);
+    lua.lua_settable(L, -3);  /* C_HOOK[L] = script */
+    lua.lua_sethook(L, Chook, mask, count);
+};
+
+const sethook = function(L) {
+    if (lua.lua_isnoneornil(L, 1))
+        lua.lua_sethook(L, null, 0, 0);  /* turn off hooks */
+    else {
+        const scpt = lauxlib.luaL_checkstring(L, 1);
+        const smask = lauxlib.luaL_checkstring(L, 2);
+        let count = lauxlib.luaL_optinteger(L, 3, 0);
+        let mask = 0;
+        if (luastring_indexOf(smask, 'c'.charCodeAt(0)) >= 0) mask |= lua.LUA_MASKCALL;
+        if (luastring_indexOf(smask, 'r'.charCodeAt(0)) >= 0) mask |= lua.LUA_MASKRET;
+        if (luastring_indexOf(smask, 'l'.charCodeAt(0)) >= 0) mask |= lua.LUA_MASKLINE;
+        if (count > 0) mask |= lua.LUA_MASKCOUNT;
+        sethookaux(L, mask, count, scpt);
+    }
+    return 0;
+};
+
+const Cfunc = function(L) {
+    return runJS(L, L, { script: lua.lua_tostring(L, lua.lua_upvalueindex(1)), offset: 0 });
+};
+
+const Cfunck = function(L, status, ctx) {
+    pushcode(L, status);
+    lua.lua_setglobal(L, to_luastring("status", true));
+    lua.lua_pushinteger(L, ctx);
+    lua.lua_setglobal(L, to_luastring("ctx", true));
+    return runJS(L, L, { script: lua.lua_tostring(L, ctx), offset: 0 });
+};
+
+const makeCfunc = function(L) {
+    lauxlib.luaL_checkstring(L, 1);
+    lua.lua_pushcclosure(L, Cfunc, lua.lua_gettop(L));
+    return 1;
+};
+
+const coresume = function(L) {
+    let status;
+    let co = lua.lua_tothread(L, 1);
+    lauxlib.luaL_argcheck(L, co, 1, "coroutine expected");
+    status = lua.lua_resume(co, L, 0);
+    if (status != lua.LUA_OK && status !== lua.LUA_YIELD) {
+        lua.lua_pushboolean(L, 0);
+        lua.lua_insert(L, -2);
+        return 2;  /* return false + error message */
+    }
+    else {
+        lua.lua_pushboolean(L, 1);
+        return 1;
+    }
+};
+
+const obj_at = function(L, k) {
+    return L.stack[L.ci.funcOff + k].value.p;
+};
+
+const setnameval = function(L, name, val) {
+    lua.lua_pushstring(L, name);
+    lua.lua_pushinteger(L, val);
+    lua.lua_settable(L, -3);
+};
+
+const pushobject = function(L, o){
+    pushobj2s(L, o);
+    assert(L.top <= L.ci.top, "stack overflow");
+};
+
+const buildop = function(p, pc) {
+    let i = p.code[pc];
+    let o = lopcodes.GET_OPCODE(i);
+    let name = lopcodes.OpCodes[o];
+    let line = p.lineinfo.length !== 0 ? p.lineinfo[pc] : -1;
+    let result = sprintf("(%4d) %4d - ", line, pc); //`(${line}) ${pc} - `;
+    switch (lopcodes.getOpMode(o)) {
+        case lopcodes.iABC:
+            result += sprintf("%-12s%4d %4d %4d", name, lopcodes.GETARG_A(i), lopcodes.GETARG_B(i), lopcodes.GETARG_C(i)); // `${name} ${lopcodes.GETARG_A(i)} ${lopcodes.GETARG_B(i)} ${lopcodes.GETARG_C(i)}`;
+            break;
+        case lopcodes.iABx:
+            result += sprintf("%-12s%4d %4d", name, lopcodes.GETARG_A(i), lopcodes.GETARG_Bx(i)); // `${name} ${lopcodes.GETARG_A(i)} ${lopcodes.GETARG_Bx(i)}`;
+            break;
+        case lopcodes.iAsBx:
+            result += sprintf("%-12s%4d %4d", name, lopcodes.GETARG_A(i), lopcodes.GETARG_sBx(i)); // `${name} ${lopcodes.GETARG_A(i)} ${lopcodes.GETARG_sBx(i)}`;
+            break;
+        case lopcodes.iAx:
+            result += sprintf("%-12s%4d", name, lopcodes.GETARG_Ax(i)); // `${name} ${lopcodes.GETARG_Ax(i)}`;
+            break;
+    }
+
+    return to_luastring(result);
+};
+
+const listcode = function(L) {
+    lauxlib.luaL_argcheck(L, lua.lua_isfunction(L, 1) && !lua.lua_iscfunction(L, 1),
+        1, "Lua function expected");
+    let p = obj_at(L, 1);
+    lua.lua_newtable(L);
+    setnameval(L, to_luastring("maxstack", true), p.maxstacksize);
+    setnameval(L, to_luastring("numparams", true), p.numparams);
+    for (let pc = 0; pc < p.code.length; pc++) {
+        lua.lua_pushinteger(L, pc+1);
+        lua.lua_pushstring(L, buildop(p, pc));
+        lua.lua_settable(L, -3);
+    }
+    return 1;
+};
+
+const listk = function(L) {
+    lauxlib.luaL_argcheck(L,
+        lua.lua_isfunction(L, 1) && !lua.lua_iscfunction(L, 1),
+        1, "Lua function expected");
+    let p = obj_at(L, 1);
+    lua.lua_createtable(L, p.k.length, 0);
+    for (let i = 0; i < p.k.length; i++) {
+        pushobject(L, p.k[i]);
+        lua.lua_rawseti(L, -2, i + 1);
+    }
+    return 1;
+};
+
+const tests_funcs = {
+    "checkpanic":   checkpanic,
+    "closestate":   closestate,
+    "d2s":          d2s,
+    "doremote":     doremote,
+    "listcode":     listcode,
+    "listk":        listk,
+    "loadlib":      loadlib,
+    "makeCfunc":    makeCfunc,
+    "newstate":     newstate,
+    "newuserdata":  newuserdata,
+    "pushuserdata": pushuserdata,
+    "resume":       coresume,
+    "s2d":          s2d,
+    "sethook":      sethook,
+    "testC":        testJS,
+    "testJS":       testJS,
+    "udataval":     udataval,
+    "upvalue":      upvalue
+};
+
+const luaB_opentests = function(L) {
+    lua.lua_atpanic(L, tpanic);
+    lauxlib.luaL_newlib(L, tests_funcs);
+    return 1;
+};
+
+const luaopen_tests = function(L) {
+    lauxlib.luaL_requiref(L, to_luastring("T"), luaB_opentests, 1);
+    lua.lua_pop(L, 1); /* remove lib */
+};
+
+module.exports.luaopen_tests = luaopen_tests;