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"use strict";
const test = require('tape');
const lua = require('../../src/lua.js');
const lauxlib = require('../../src/lauxlib.js');
const lualib = require('../../src/lualib.js');
const {to_luastring} = require("../../src/fengaricore.js");
test('[test-suite] locals: bug in 5.1', function (t) {
let luaCode = `
local function f(x) x = nil; return x end
assert(f(10) == nil)
local function f() local x; return x end
assert(f(10) == nil)
local function f(x) x = nil; local y; return x, y end
assert(f(10) == nil and select(2, f(20)) == nil)
`, L;
t.plan(2);
t.doesNotThrow(function () {
L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);
lauxlib.luaL_loadstring(L, to_luastring(luaCode));
}, "Lua program loaded without error");
t.doesNotThrow(function () {
lua.lua_call(L, 0, -1);
}, "Lua program ran without error");
});
test('[test-suite] locals: local scope', function (t) {
let luaCode = `
do
local i = 10
do local i = 100; assert(i==100) end
do local i = 1000; assert(i==1000) end
assert(i == 10)
if i ~= 10 then
local i = 20
else
local i = 30
assert(i == 30)
end
end
f = nil
local f
x = 1
a = nil
load('local a = {}')()
assert(a == nil)
function f (a)
local _1, _2, _3, _4, _5
local _6, _7, _8, _9, _10
local x = 3
local b = a
local c,d = a,b
if (d == b) then
local x = 'q'
x = b
assert(x == 2)
else
assert(nil)
end
assert(x == 3)
local f = 10
end
local b=10
local a; repeat local b; a,b=1,2; assert(a+1==b); until a+b==3
assert(x == 1)
f(2)
assert(type(f) == 'function')
`, L;
t.plan(2);
t.doesNotThrow(function () {
L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);
lauxlib.luaL_loadstring(L, to_luastring(luaCode));
}, "Lua program loaded without error");
t.doesNotThrow(function () {
lua.lua_call(L, 0, -1);
}, "Lua program ran without error");
});
const getenv = `
local function getenv (f)
local a,b = debug.getupvalue(f, 1)
assert(a == '_ENV')
return b
end
`;
test('[test-suite] locals: test for global table of loaded chunks', function (t) {
let luaCode = `
assert(getenv(load"a=3") == _G)
local c = {}; local f = load("a = 3", nil, nil, c)
assert(getenv(f) == c)
assert(c.a == nil)
f()
assert(c.a == 3)
`, L;
t.plan(2);
t.doesNotThrow(function () {
L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);
lauxlib.luaL_loadstring(L, to_luastring(getenv + luaCode));
}, "Lua program loaded without error");
t.doesNotThrow(function () {
lua.lua_call(L, 0, -1);
}, "Lua program ran without error");
});
test('[test-suite] locals: old test for limits for special instructions (now just a generic test)', function (t) {
let luaCode = `
do
local i = 2
local p = 4 -- p == 2^i
repeat
for j=-3,3 do
assert(load(string.format([[local a=%s;
a=a+%s;
assert(a ==2^%s)]], j, p-j, i), '')) ()
assert(load(string.format([[local a=%s;
a=a-%s;
assert(a==-2^%s)]], -j, p-j, i), '')) ()
assert(load(string.format([[local a,b=0,%s;
a=b-%s;
assert(a==-2^%s)]], -j, p-j, i), '')) ()
end
p = 2 * p; i = i + 1
until p <= 0
end
`, L;
t.plan(2);
t.doesNotThrow(function () {
L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);
lauxlib.luaL_loadstring(L, to_luastring(luaCode));
}, "Lua program loaded without error");
t.doesNotThrow(function () {
lua.lua_call(L, 0, -1);
}, "Lua program ran without error");
});
test('[test-suite] locals: testing lexical environments', function (t) {
let luaCode = `
assert(_ENV == _G)
do
local dummy
local _ENV = (function (...) return ... end)(_G, dummy) -- {
do local _ENV = {assert=assert}; assert(true) end
mt = {_G = _G}
local foo,x
A = false -- "declare" A
do local _ENV = mt
function foo (x)
A = x
do local _ENV = _G; A = 1000 end
return function (x) return A .. x end
end
end
assert(getenv(foo) == mt)
x = foo('hi'); assert(mt.A == 'hi' and A == 1000)
assert(x('*') == mt.A .. '*')
do local _ENV = {assert=assert, A=10};
do local _ENV = {assert=assert, A=20};
assert(A==20);x=A
end
assert(A==10 and x==20)
end
assert(x==20)
end
`, L;
t.plan(2);
t.doesNotThrow(function () {
L = lauxlib.luaL_newstate();
lualib.luaL_openlibs(L);
lauxlib.luaL_loadstring(L, to_luastring(getenv + luaCode));
}, "Lua program loaded without error");
t.doesNotThrow(function () {
lua.lua_call(L, 0, -1);
}, "Lua program ran without error");
});
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