text: "use strict";
  
  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");
  
  const checkload = `
      local function checkload (s, msg)
        assert(string.find(select(2, load(s)), msg))
      end
  `;
  
  test('[test-suite] constructs: testing semicolons', () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          do ;;; end
          ; do ; a = 3; assert(a == 3) end;
          ;
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  
  
  test('[test-suite] constructs: invalid operations should not raise errors when not executed', () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          if false then a = 3 // 0; a = 0 % 0 end
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  
  
  test('[test-suite] constructs: testing priorities', () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          assert(2^3^2 == 2^(3^2));
          assert(2^3*4 == (2^3)*4);
          assert(2.0^-2 == 1/4 and -2^- -2 == - - -4);
          assert(not nil and 2 and not(2>3 or 3<2));
          assert(-3-1-5 == 0+0-9);
          assert(-2^2 == -4 and (-2)^2 == 4 and 2*2-3-1 == 0);
          assert(-3%5 == 2 and -3+5 == 2)
          assert(2*1+3/3 == 3 and 1+2 .. 3*1 == "33");
          assert(not(2+1 > 3*1) and "a".."b" > "a");
  
          assert("7" .. 3 << 1 == 146)
          assert(10 >> 1 .. "9" == 0)
          assert(10 | 1 .. "9" == 27)
  
          assert(0xF0 | 0xCC ~ 0xAA & 0xFD == 0xF4)
          assert(0xFD & 0xAA ~ 0xCC | 0xF0 == 0xF4)
          assert(0xF0 & 0x0F + 1 == 0x10)
  
          assert(3^4//2^3//5 == 2)
  
          assert(-3+4*5//2^3^2//9+4%10/3 == (-3)+(((4*5)//(2^(3^2)))//9)+((4%10)/3))
  
          assert(not ((true or false) and nil))
          assert(      true or false  and nil)
  
          -- old bug
          assert((((1 or false) and true) or false) == true)
          assert((((nil and true) or false) and true) == false)
  
          local a,b = 1,nil;
          assert(-(1 or 2) == -1 and (1 and 2)+(-1.25 or -4) == 0.75);
          x = ((b or a)+1 == 2 and (10 or a)+1 == 11); assert(x);
          x = (((2<3) or 1) == true and (2<3 and 4) == 4); assert(x);
  
          x,y=1,2;
          assert((x>y) and x or y == 2);
          x,y=2,1;
          assert((x>y) and x or y == 2);
  
          assert(1234567890 == tonumber('1234567890') and 1234567890+1 == 1234567891)
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  
  
  test('[test-suite] constructs: silly loops', () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          repeat until 1; repeat until true;
          while false do end; while nil do end;
  
          do  -- test old bug (first name could not be an 'upvalue')
           local a; function f(x) x={a=1}; x={x=1}; x={G=1} end
          end
  
          function f (i)
            if type(i) ~= 'number' then return i,'jojo'; end;
            if i > 0 then return i, f(i-1); end;
          end
  
          x = {f(3), f(5), f(10);};
          assert(x[1] == 3 and x[2] == 5 and x[3] == 10 and x[4] == 9 and x[12] == 1);
          assert(x[nil] == nil)
          x = {f'alo', f'xixi', nil};
          assert(x[1] == 'alo' and x[2] == 'xixi' and x[3] == nil);
          x = {f'alo'..'xixi'};
          assert(x[1] == 'aloxixi')
          x = {f{}}
          assert(x[2] == 'jojo' and type(x[1]) == 'table')
  
  
          local f = function (i)
            if i < 10 then return 'a';
            elseif i < 20 then return 'b';
            elseif i < 30 then return 'c';
            end;
          end
  
          assert(f(3) == 'a' and f(12) == 'b' and f(26) == 'c' and f(100) == nil)
  
          for i=1,1000 do break; end;
          n=100;
          i=3;
          t = {};
          a=nil
          while not a do
            a=0; for i=1,n do for i=i,1,-1 do a=a+1; t[i]=1; end; end;
          end
          assert(a == n*(n+1)/2 and i==3);
          assert(t[1] and t[n] and not t[0] and not t[n+1])
  
          function f(b)
            local x = 1;
            repeat
              local a;
              if b==1 then local b=1; x=10; break
              elseif b==2 then x=20; break;
              elseif b==3 then x=30;
              else local a,b,c,d=math.sin(1); x=x+1;
              end
            until x>=12;
            return x;
          end;
  
          assert(f(1) == 10 and f(2) == 20 and f(3) == 30 and f(4)==12)
  
  
          local f = function (i)
            if i < 10 then return 'a'
            elseif i < 20 then return 'b'
            elseif i < 30 then return 'c'
            else return 8
            end
          end
  
          assert(f(3) == 'a' and f(12) == 'b' and f(26) == 'c' and f(100) == 8)
  
          local a, b = nil, 23
          x = {f(100)*2+3 or a, a or b+2}
          assert(x[1] == 19 and x[2] == 25)
          x = {f=2+3 or a, a = b+2}
          assert(x.f == 5 and x.a == 25)
  
          a={y=1}
          x = {a.y}
          assert(x[1] == 1)
  
          function f(i)
            while 1 do
              if i>0 then i=i-1;
              else return; end;
            end;
          end;
  
          function g(i)
            while 1 do
              if i>0 then i=i-1
              else return end
            end
          end
  
          f(10); g(10);
  
          do
            function f () return 1,2,3; end
            local a, b, c = f();
            assert(a==1 and b==2 and c==3)
            a, b, c = (f());
            assert(a==1 and b==nil and c==nil)
          end
  
          local a,b = 3 and f();
          assert(a==1 and b==nil)
  
          function g() f(); return; end;
          assert(g() == nil)
          function g() return nil or f() end
          a,b = g()
          assert(a==1 and b==nil)
  
          f = [[
          return function ( a , b , c , d , e )
            local x = a >= b or c or ( d and e ) or nil
            return x
          end , { a = 1 , b = 2 >= 1 , } or { 1 };
          ]]
          f = string.gsub(f, "%s+", "\\n");   -- force a SETLINE between opcodes
          f,a = load(f)();
          assert(a.a == 1 and a.b)
  
          function g (a,b,c,d,e)
            if not (a>=b or c or d and e or nil) then return 0; else return 1; end;
          end
  
          function h (a,b,c,d,e)
            while (a>=b or c or (d and e) or nil) do return 1; end;
            return 0;
          end;
  
          assert(f(2,1) == true and g(2,1) == 1 and h(2,1) == 1)
          assert(f(1,2,'a') == 'a' and g(1,2,'a') == 1 and h(1,2,'a') == 1)
          assert(f(1,2,'a')
          ~=          -- force SETLINE before nil
          nil, "")
          assert(f(1,2,'a') == 'a' and g(1,2,'a') == 1 and h(1,2,'a') == 1)
          assert(f(1,2,nil,1,'x') == 'x' and g(1,2,nil,1,'x') == 1 and
                                             h(1,2,nil,1,'x') == 1)
          assert(f(1,2,nil,nil,'x') == nil and g(1,2,nil,nil,'x') == 0 and
                                               h(1,2,nil,nil,'x') == 0)
          assert(f(1,2,nil,1,nil) == nil and g(1,2,nil,1,nil) == 0 and
                                             h(1,2,nil,1,nil) == 0)
  
          assert(1 and 2<3 == true and 2<3 and 'a'<'b' == true)
          x = 2<3 and not 3; assert(x==false)
          x = 2<1 or (2>1 and 'a'); assert(x=='a')
  
  
          do
            local a; if nil then a=1; else a=2; end;    -- this nil comes as PUSHNIL 2
            assert(a==2)
          end
  
          function F(a)
            assert(debug.getinfo(1, "n").name == 'F')
            return a,2,3
          end
  
          a,b = F(1)~=nil; assert(a == true and b == nil);
          a,b = F(nil)==nil; assert(a == true and b == nil)
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  
  test.skip('[test-suite] constructs: huge loops, upvalue', () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          -- sometimes will be 0, sometimes will not...
          _ENV.GLOB1 = math.floor(os.time()) % 2
  
          -- basic expressions with their respective values
          local basiccases = {
            {"nil", nil},
            {"false", false},
            {"true", true},
            {"10", 10},
            {"(0==_ENV.GLOB1)", 0 == _ENV.GLOB1},
          }
  
          print('testing short-circuit optimizations (' .. _ENV.GLOB1 .. ')')
  
  
          -- operators with their respective values
          local binops = {
            {" and ", function (a,b) if not a then return a else return b end end},
            {" or ", function (a,b) if a then return a else return b end end},
          }
  
          local cases = {}
  
          -- creates all combinations of '(cases[i] op cases[n-i])' plus
          -- 'not(cases[i] op cases[n-i])' (syntax + value)
          local function createcases (n)
            local res = {}
            for i = 1, n - 1 do
              for _, v1 in ipairs(cases[i]) do
                for _, v2 in ipairs(cases[n - i]) do
                  for _, op in ipairs(binops) do
                      local t = {
                        "(" .. v1[1] .. op[1] .. v2[1] .. ")",
                        op[2](v1[2], v2[2])
                      }
                      res[#res + 1] = t
                      res[#res + 1] = {"not" .. t[1], not t[2]}
                  end
                end
              end
            end
            return res
          end
  
          -- do not do too many combinations for soft tests
          local level = _soft and 3 or 4
  
          cases[1] = basiccases
          for i = 2, level do cases[i] = createcases(i) end
  
          local prog = [[if %s then IX = true end; return %s]]
  
          local i = 0
          for n = 1, level do
            for _, v in pairs(cases[n]) do
              local s = v[1]
              local p = load(string.format(prog, s, s), "")
              IX = false
              assert(p() == v[2] and IX == not not v[2])
              i = i + 1
              -- if i % 60000 == 0 then print('+') end
            end
          end
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  
  
  test("[test-suite] constructs: testing some syntax errors (chosen through 'gcov')", () => {
      let L = lauxlib.luaL_newstate();
      if (!L) throw Error("failed to create lua state");
  
      let luaCode = `
          _soft = true
  
          checkload("for x do", "expected")
          checkload("x:call", "expected")
  
          if not _soft then
            -- control structure too long
            local s = string.rep("a = a + 1\\n", 2^18)
            s = "while true do " .. s .. "end"
            checkload(s, "too long")
          end
      `;
      lualib.luaL_openlibs(L);
      if (lauxlib.luaL_loadstring(L, to_luastring(checkload + luaCode)) === lua.LUA_ERRSYNTAX)
          throw new SyntaxError(lua.lua_tojsstring(L, -1));
      lua.lua_call(L, 0, 0);
  });
  