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path: root/serialize_lib/tests/serialize_spec.lua
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-- test the serialization function


package.path  =  "../?.lua;" .. package.path


ser = require("serialize")


local mock_file = {}
_G.mock_file = mock_file
function mock_file:read(arg)
	if arg == "*l" then
		local l = self.lines[self.pointer or 1]
		self.pointer = (self.pointer or 1) + 1
		return l
	end
end

function mock_file:close()
	return nil
end

function mock_file:write(text)
	self.content = self.content..text
end

function mock_file:create(lines)
	local f = {}
	setmetatable(f, mock_file)
	f.lines = lines or {}
	f.write = self.write
	f.close = self.close
	f.read = self.read
	f.content = ""
	return f
end


local testtable = {
	key = "value",
	[1] = "eins",
	[true] = {
		a = "b",
		c = false,
	},
	["es:cape1"] = "foo:bar",
	["es&ca\npe2"] = "baz&bam\nbim",
	["es&&ca&\npe3"] = "baz&&bam&\nbim",
	["es&:cape4"] = "foo\n:bar"
}
local testser = [[LUA_SER v=1
B1:T
Sa:Sb
Sc:B0
E
Skey:Svalue
Ses&&&&ca&&&npe3:Sbaz&&&&bam&&&nbim
N1:Seins
Ses&&&:cape4:Sfoo&n&:bar
Ses&&ca&npe2:Sbaz&&bam&nbim
Ses&:cape1:Sfoo&:bar
E
END_SER
]]

local function check_write(tb, conf)
	f = mock_file:create()
	ser.write_to_fd(tb, f, conf or {})
	return f.content
end

function string:split()
	local fields = {}
   self:gsub("[^\n]+", function(c) fields[#fields+1] = c end)
   return fields
end

local function check_read(text)
	f = mock_file:create(text:split())
	return ser.read_from_fd(f)
end
	
local noskip = [[LUA_SER v=1
N1:T
E
E
END_SER
]]
local skip = [[LUA_SER v=1
E
END_SER
]]

describe("write_to_fd", function()
				it("serializes a table correctly", function()
				assert.equals(check_write(testtable), testser)
				end)
				it("does not skip empty tables", function()
						assert.equals(check_write({{}}),noskip)
				end)
				it("skips empty tables when needed", function()

						assert.equals(check_write({{}},{skip_empty_tables=true}),skip)
				end)
end)

describe("read_from_fd", function ()
				it("reads a table correctly", function()
						assert.same(check_read(testser),testtable)
				end)
				it("handles some edge cases correctly", function()
						assert.same(check_read(noskip), {{}})
						assert.same(check_read(skip), {})
				end)
				it("Read back table", function()
						local tb = {}
						for k=1,262 do
							tb[k] =  { "Foo", "bar", k}
						end
						assert.same(check_read(check_write(tb)), tb)
				end)
end)
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/*
** $Id: lvm.c,v 2.63.1.3 2007/12/28 15:32:23 roberto Exp $
** Lua virtual machine
** See Copyright Notice in lua.h
*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define lvm_c
#define LUA_CORE

#include "lua.h"

#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lgc.h"
#include "lobject.h"
#include "lopcodes.h"
#include "lstate.h"
#include "lstring.h"
#include "ltable.h"
#include "ltm.h"
#include "lvm.h"



/* limit for table tag-method chains (to avoid loops) */
#define MAXTAGLOOP	100


const TValue *luaV_tonumber (const TValue *obj, TValue *n) {
  lua_Number num;
  if (ttisnumber(obj)) return obj;
  if (ttisstring(obj) && luaO_str2d(svalue(obj), &num)) {
    setnvalue(n, num);
    return n;
  }
  else
    return NULL;
}


int luaV_tostring (lua_State *L, StkId obj) {
  if (!ttisnumber(obj))
    return 0;
  else {
    char s[LUAI_MAXNUMBER2STR];
    lua_Number n = nvalue(obj);
    lua_number2str(s, n);
    setsvalue2s(L, obj, luaS_new(L, s));
    return 1;
  }
}


static void traceexec (lua_State *L, const Instruction *pc) {
  lu_byte mask = L->hookmask;
  const Instruction *oldpc = L->savedpc;
  L->savedpc = pc;
  if ((mask & LUA_MASKCOUNT) && L->hookcount == 0) {
    resethookcount(L);
    luaD_callhook(L, LUA_HOOKCOUNT, -1);
  }
  if (mask & LUA_MASKLINE) {
    Proto *p = ci_func(L->ci)->l.p;
    int npc = pcRel(pc, p);
    int newline = getline(p, npc);
    /* call linehook when enter a new function, when jump back (loop),
       or when enter a new line */
    if (npc == 0 || pc <= oldpc || newline != getline(p, pcRel(oldpc, p)))
      luaD_callhook(L, LUA_HOOKLINE, newline);
  }
}


static void callTMres (lua_State *L, StkId res, const TValue *f,
                        const TValue *p1, const TValue *p2) {
  ptrdiff_t result = savestack(L, res);
  setobj2s(L, L->top, f);  /* push function */
  setobj2s(L, L->top+1, p1);  /* 1st argument */
  setobj2s(L, L->top+2, p2);  /* 2nd argument */
  luaD_checkstack(L, 3);
  L->top += 3;
  luaD_call(L, L->top - 3, 1);
  res = restorestack(L, result);
  L->top--;
  setobjs2s(L, res, L->top);
}



static void callTM (lua_State *L, const TValue *f, const TValue *p1,
                    const TValue *p2, const TValue *p3) {
  setobj2s(L, L->top, f);  /* push function */
  setobj2s(L, L->top+1, p1);  /* 1st argument */
  setobj2s(L, L->top+2, p2);  /* 2nd argument */
  setobj2s(L, L->top+3, p3);  /* 3th argument */
  luaD_checkstack(L, 4);
  L->top += 4;
  luaD_call(L, L->top - 4, 0);
}


void luaV_gettable (lua_State *L, const TValue *t, TValue *key, StkId val) {
  int loop;
  for (loop = 0; loop < MAXTAGLOOP; loop++) {
    const TValue *tm;
    if (ttistable(t)) {  /* `t' is a table? */
      Table *h = hvalue(t);
      const TValue *res = luaH_get(h, key); /* do a primitive get */
      if (!ttisnil(res) ||  /* result is no nil? */
          (tm = fasttm(L, h->metatable, TM_INDEX)) == NULL) { /* or no TM? */
        setobj2s(L, val, res);
        return;
      }
      /* else will try the tag method */
    }
    else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_INDEX)))
      luaG_typeerror(L, t, "index");
    if (ttisfunction(tm)) {
      callTMres(L, val, tm, t, key);
      return;
    }
    t = tm;  /* else repeat with `tm' */ 
  }
  luaG_runerror(L, "loop in gettable");
}


void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) {
  int loop;
  for (loop = 0; loop < MAXTAGLOOP; loop++) {
    const TValue *tm;
    if (ttistable(t)) {  /* `t' is a table? */
      Table *h = hvalue(t);
      TValue *oldval = luaH_set(L, h, key); /* do a primitive set */
      if (!ttisnil(oldval) ||  /* result is no nil? */
          (tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL) { /* or no TM? */
        setobj2t(L, oldval, val);
        luaC_barriert(L, h, val);
        return;
      }
      /* else will try the tag method */
    }
    else if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_NEWINDEX)))
      luaG_typeerror(L, t, "index");
    if (ttisfunction(tm)) {
      callTM(L, tm, t, key, val);
      return;
    }
    t = tm;  /* else repeat with `tm' */ 
  }
  luaG_runerror(L, "loop in settable");
}


static int call_binTM (lua_State *L, const TValue *p1, const TValue *p2,
                       StkId res, TMS event) {
  const TValue *tm = luaT_gettmbyobj(L, p1, event);  /* try first operand */
  if (ttisnil(tm))