"use strict";

const test       = require('tape');
const beautify   = require('js-beautify').js_beautify;

const tests      = require("./tests.js");
const getState   = tests.getState;
const toByteCode = tests.toByteCode;

const VM         = require("../src/lvm.js");
const ldo        = require("../src/ldo.js");
const lapi       = require("../src/lapi.js");
const lauxlib    = require("../src/lauxlib.js");
const lua        = require('../src/lua.js');
const linit      = require('../src/linit.js');
const CT         = lua.constant_types;


test('luaL_loadstring', function (t) {
    let luaCode = `
        local a = "hello world"
        return a
    `, L;
    
    t.plan(3);

    t.doesNotThrow(function () {

        L = lauxlib.luaL_newstate();

        linit.luaL_openlibs(L);

        lauxlib.luaL_loadstring(L, luaCode);

    }, "Lua program loaded without error");

    t.doesNotThrow(function () {

        lapi.lua_call(L, 0, -1);

    }, "Lua program ran without error");

    t.strictEqual(
        lapi.lua_tostring(L, -1),
        "hello world",
        "Correct element(s) on the stack"
    );

});


test('load', function (t) {
    let luaCode = `
        local f = load("return 'js running lua running lua'")
        return f()
    `, L;
    
    t.plan(3);

    t.doesNotThrow(function () {

        L = lauxlib.luaL_newstate();

        linit.luaL_openlibs(L);

        lauxlib.luaL_loadstring(L, luaCode);

    }, "Lua program loaded without error");

    t.doesNotThrow(function () {

        lapi.lua_call(L, 0, -1);

    }, "Lua program ran without error");

    t.strictEqual(
        lapi.lua_tostring(L, -1),
        "js running lua running lua",
        "Correct element(s) on the stack"
    );

});


test('luaL_loadbuffer', function (t) {
    let luaCode = `
        local a = "hello world"
        return a
    `, L;
    
    t.plan(3);

    t.doesNotThrow(function () {

        let bc = toByteCode(luaCode).dataView;

        L = lauxlib.luaL_newstate();

        linit.luaL_openlibs(L);

        lauxlib.luaL_loadbuffer(L, bc, null, "test");

    }, "Lua program loaded without error");

    t.doesNotThrow(function () {

        lapi.lua_call(L, 0, -1);

    }, "Lua program ran without error");

    t.strictEqual(
        lapi.lua_tostring(L, -1),
        "hello world",
        "Correct element(s) on the stack"
    );

});