84 lines
2.2 KiB
Lua
84 lines
2.2 KiB
Lua
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-- $Id: big.lua,v 1.32 2016/11/07 13:11:28 roberto Exp $
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-- See Copyright Notice in file all.lua
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if _soft then
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return 'a'
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end
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print "testing large tables"
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local debug = require"debug"
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-- NodeMCU: limit big size to IoT scales
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local lim = 50000
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local prog = { "local y = {0" }
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for i = 1, lim do prog[#prog + 1] = i end
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prog[#prog + 1] = "}\n"
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prog[#prog + 1] = "X = y\n"
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prog[#prog + 1] = ("assert(X[%d] == %d)"):format(lim - 1, lim - 2)
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prog[#prog + 1] = "return 0"
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prog = table.concat(prog, ";")
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local env = {string = string, assert = assert}
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local f = assert(load(prog, nil, nil, env))
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f()
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assert(env.X[lim] == lim - 1 and env.X[lim + 1] == lim)
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for k in pairs(env) do env[k] = nil end
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-- yields during accesses larger than K (in RK)
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setmetatable(env, {
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__index = function (t, n) coroutine.yield('g'); return _G[n] end,
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__newindex = function (t, n, v) coroutine.yield('s'); _G[n] = v end,
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})
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X = nil
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co = coroutine.wrap(f)
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assert(co() == 's')
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assert(co() == 'g')
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assert(co() == 'g')
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assert(co() == 0)
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assert(X[lim] == lim - 1 and X[lim + 1] == lim)
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-- errors in accesses larger than K (in RK)
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getmetatable(env).__index = function () end
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getmetatable(env).__newindex = function () end
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local e, m = pcall(f)
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assert(not e and m:find("global 'X'"))
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-- errors in metamethods
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getmetatable(env).__newindex = function () error("hi") end
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local e, m = xpcall(f, debug.traceback)
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assert(not e and m:find("'__newindex'"))
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f, X = nil
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coroutine.yield'b'
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if 2^32 == 0 then -- (small integers) {
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print "testing string length overflow"
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local repstrings = 192 -- number of strings to be concatenated
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local ssize = math.ceil(2.0^32 / repstrings) + 1 -- size of each string
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assert(repstrings * ssize > 2.0^32) -- it should be larger than maximum size
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local longs = string.rep("\0", ssize) -- create one long string
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-- create function to concatentate 'repstrings' copies of its argument
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local rep = assert(load(
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"local a = ...; return " .. string.rep("a", repstrings, "..")))
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local a, b = pcall(rep, longs) -- call that function
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-- it should fail without creating string (result would be too large)
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assert(not a and string.find(b, "overflow"))
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end -- }
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print'OK'
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return 'a'
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