@@ -0,0 +1,1543 @@
1+-- $Id: testes/api.lua $
2+-- See Copyright Notice in file all.lua
5+ (Message or print)('\n >>> testC not active: skipping API tests <<<\n')
9+local debug = require "debug"
11+local pack = table.pack
14+-- standard error message for memory errors
15+local MEMERRMSG = "not enough memory"
17+local function tcheck (t1, t2)
18+ assert(t1.n == (t2.n or #t2) + 1)
19+ for i = 2, t1.n do assert(t1[i] == t2[i - 1]) end
23+local function checkerr (msg, f, ...)
24+ local stat, err = pcall(f, ...)
25+ assert(not stat and string.find(err, msg))
29+print('testing C API')
31+local a = T.testC("pushvalue R; return 1")
32+assert(a == debug.getregistry())
36+assert(T.testC("settop 10; absindex -1; return 1") == 10)
37+assert(T.testC("settop 5; absindex -5; return 1") == 1)
38+assert(T.testC("settop 10; absindex 1; return 1") == 1)
39+assert(T.testC("settop 10; absindex R; return 1") < -10)
42+a = T.d2s(12458954321123.0)
43+assert(a == string.pack("d", 12458954321123.0))
44+assert(T.s2d(a) == 12458954321123.0)
46+local a,b,c = T.testC("pushnum 1; pushnum 2; pushnum 3; return 2")
47+assert(a == 2 and b == 3 and not c)
49+local f = T.makeCfunc("pushnum 1; pushnum 2; pushnum 3; return 2")
51+assert(a == 2 and b == 3 and not c)
53+-- test that all trues are equal
54+a,b,c = T.testC("pushbool 1; pushbool 2; pushbool 0; return 3")
55+assert(a == b and a == true and c == false)
56+a,b,c = T.testC"pushbool 0; pushbool 10; pushnil;\
57+ tobool -3; tobool -3; tobool -3; return 3"
58+assert(a==false and b==true and c==false)
61+a,b,c = T.testC("gettop; return 2", 10, 20, 30, 40)
62+assert(a == 40 and b == 5 and not c)
64+local t = pack(T.testC("settop 5; return *", 2, 3))
67+t = pack(T.testC("settop 0; settop 15; return 10", 3, 1, 23))
68+assert(t.n == 10 and t[1] == nil and t[10] == nil)
70+t = pack(T.testC("remove -2; return *", 2, 3, 4))
73+t = pack(T.testC("insert -1; return *", 2, 3))
76+t = pack(T.testC("insert 3; return *", 2, 3, 4, 5))
77+tcheck(t, {n=4,2,5,3,4})
79+t = pack(T.testC("replace 2; return *", 2, 3, 4, 5))
80+tcheck(t, {n=3,5,3,4})
82+t = pack(T.testC("replace -2; return *", 2, 3, 4, 5))
83+tcheck(t, {n=3,2,3,5})
85+t = pack(T.testC("remove 3; return *", 2, 3, 4, 5))
86+tcheck(t, {n=3,2,4,5})
88+t = pack(T.testC("copy 3 4; return *", 2, 3, 4, 5))
89+tcheck(t, {n=4,2,3,3,5})
91+t = pack(T.testC("copy -3 -1; return *", 2, 3, 4, 5))
92+tcheck(t, {n=4,2,3,4,3})
94+do -- testing 'rotate'
95+ local t = {10, 20, 30, 40, 50, 60}
97+ local s = string.format("rotate 2 %d; return 7", i)
98+ local t1 = pack(T.testC(s, 10, 20, 30, 40, 50, 60))
100+ table.insert(t, 1, table.remove(t))
103+ t = pack(T.testC("rotate -2 1; return *", 10, 20, 30, 40))
104+ tcheck(t, {10, 20, 40, 30})
105+ t = pack(T.testC("rotate -2 -1; return *", 10, 20, 30, 40))
106+ tcheck(t, {10, 20, 40, 30})
108+ -- some corner cases
109+ t = pack(T.testC("rotate -1 0; return *", 10, 20, 30, 40))
110+ tcheck(t, {10, 20, 30, 40})
111+ t = pack(T.testC("rotate -1 1; return *", 10, 20, 30, 40))
112+ tcheck(t, {10, 20, 30, 40})
113+ t = pack(T.testC("rotate 5 -1; return *", 10, 20, 30, 40))
114+ tcheck(t, {10, 20, 30, 40})
120+ warningC "#This shold be a"
123+ warningC "#This should be "
124+ warning "another one"
128+-- testing message handlers
130+ local f = T.makeCfunc[[
133+ pcall 1 1 1 # call 'error' with given handler
135+ return 2 # return error message and status
138+ local msg, st = f(string.upper) -- function handler
139+ assert(st == "ERRRUN" and msg == "BOLA")
140+ local msg, st = f(string.len) -- function handler
141+ assert(st == "ERRRUN" and msg == 4)
145+t = pack(T.testC("insert 3; pushvalue 3; remove 3; pushvalue 2; remove 2; \
146+ insert 2; pushvalue 1; remove 1; insert 1; \
147+ insert -2; pushvalue -2; remove -3; return *",
148+ 2, 3, 4, 5, 10, 40, 90))
149+tcheck(t, {n=7,2,3,4,5,10,40,90})
151+t = pack(T.testC("concat 5; return *", "alo", 2, 3, "joao", 12))
152+tcheck(t, {n=1,"alo23joao12"})
155+t = pack(T.testC("call 2,-1; return *",
156+ function (a,b) return 1,2,3,4,a,b end, "alo", "joao"))
157+tcheck(t, {n=6,1,2,3,4,"alo", "joao"})
159+do -- test returning more results than fit in the caller stack
161+ for i=1,1000 do a[i] = true end; a[999] = 10
162+ local b = T.testC([[pcall 1 -1 0; pop 1; tostring -1; return 1]],
169+_G.AA = 14; _G.BB = "a31"
177+assert(a[2] == 14 and a[3] == "a31" and a[4] == nil and _G.AA == "a31")
182+assert(T.testC("pushnum 10; pushnum 20; arith /; return 1") == 0.5)
183+assert(T.testC("pushnum 10; pushnum 20; arith -; return 1") == -10)
184+assert(T.testC("pushnum 10; pushnum -20; arith *; return 1") == -200)
185+assert(T.testC("pushnum 10; pushnum 3; arith ^; return 1") == 1000)
186+assert(T.testC("pushnum 10; pushstring 20; arith /; return 1") == 0.5)
187+assert(T.testC("pushstring 10; pushnum 20; arith -; return 1") == -10)
188+assert(T.testC("pushstring 10; pushstring -20; arith *; return 1") == -200)
189+assert(T.testC("pushstring 10; pushstring 3; arith ^; return 1") == 1000)
190+assert(T.testC("arith /; return 1", 2, 0) == 10.0/0)
191+a = T.testC("pushnum 10; pushint 3; arith \\; return 1")
192+assert(a == 3.0 and math.type(a) == "float")
193+a = T.testC("pushint 10; pushint 3; arith \\; return 1")
194+assert(a == 3 and math.type(a) == "integer")
195+a = assert(T.testC("pushint 10; pushint 3; arith +; return 1"))
196+assert(a == 13 and math.type(a) == "integer")
197+a = assert(T.testC("pushnum 10; pushint 3; arith +; return 1"))
198+assert(a == 13 and math.type(a) == "float")
199+a,b,c = T.testC([[pushnum 1;
200+ pushstring 10; arith _;
201+ pushstring 5; return 3]])
202+assert(a == 1 and b == -10 and c == "5")
204+ __add = function (a,b) return setmetatable({a[1] + b[1]}, mt) end,
205+ __mod = function (a,b) return setmetatable({a[1] % b[1]}, mt) end,
206+ __unm = function (a) return setmetatable({a[1]* 2}, mt) end}
207+a,b,c = setmetatable({4}, mt),
208+ setmetatable({8}, mt),
209+ setmetatable({-3}, mt)
210+local x,y,z = T.testC("arith +; return 2", 10, a, b)
211+assert(x == 10 and y[1] == 12 and z == nil)
212+assert(T.testC("arith %; return 1", a, c)[1] == 4%-3)
213+assert(T.testC("arith _; arith +; arith %; return 1", b, a, c)[1] ==
216+-- errors in arithmetic
217+checkerr("divide by zero", T.testC, "arith \\", 10, 0)
218+checkerr("%%0", T.testC, "arith %", 10, 0)
221+-- testing lessthan and lessequal
222+assert(T.testC("compare LT 2 5, return 1", 3, 2, 2, 4, 2, 2))
223+assert(T.testC("compare LE 2 5, return 1", 3, 2, 2, 4, 2, 2))
224+assert(not T.testC("compare LT 3 4, return 1", 3, 2, 2, 4, 2, 2))
225+assert(T.testC("compare LE 3 4, return 1", 3, 2, 2, 4, 2, 2))
226+assert(T.testC("compare LT 5 2, return 1", 4, 2, 2, 3, 2, 2))
227+assert(not T.testC("compare LT 2 -3, return 1", "4", "2", "2", "3", "2", "2"))
228+assert(not T.testC("compare LT -3 2, return 1", "3", "2", "2", "4", "2", "2"))
230+-- non-valid indices produce false
231+assert(not T.testC("compare LT 1 4, return 1"))
232+assert(not T.testC("compare LE 9 1, return 1"))
233+assert(not T.testC("compare EQ 9 9, return 1"))
235+local b = {__lt = function (a,b) return a[1] < b[1] end}
236+local a1,a3,a4 = setmetatable({1}, b),
237+ setmetatable({3}, b),
238+ setmetatable({4}, b)
239+assert(T.testC("compare LT 2 5, return 1", a3, 2, 2, a4, 2, 2))
240+assert(T.testC("compare LE 2 5, return 1", a3, 2, 2, a4, 2, 2))
241+assert(T.testC("compare LT 5 -6, return 1", a4, 2, 2, a3, 2, 2))
242+a,b = T.testC("compare LT 5 -6, return 2", a1, 2, 2, a3, 2, 20)
243+assert(a == 20 and b == false)
244+a,b = T.testC("compare LE 5 -6, return 2", a1, 2, 2, a3, 2, 20)
245+assert(a == 20 and b == false)
246+a,b = T.testC("compare LE 5 -6, return 2", a1, 2, 2, a1, 2, 20)
247+assert(a == 20 and b == true)
250+do -- testing lessthan and lessequal with metamethods
251+ local mt = {__lt = function (a,b) return a[1] < b[1] end,
252+ __le = function (a,b) return a[1] <= b[1] end,
253+ __eq = function (a,b) return a[1] == b[1] end}
254+ local function O (x)
255+ return setmetatable({x}, mt)
258+ local a, b = T.testC("compare LT 2 3; pushint 10; return 2", O(1), O(2))
259+ assert(a == true and b == 10)
260+ local a, b = T.testC("compare LE 2 3; pushint 10; return 2", O(3), O(2))
261+ assert(a == false and b == 10)
262+ local a, b = T.testC("compare EQ 2 3; pushint 10; return 2", O(3), O(3))
263+ assert(a == true and b == 10)
267+local t = setmetatable({x = 20}, {__len = function (t) return t.x end})
274+assert(a == 20 and b == 20 and c == 0)
276+t.x = "234"; t[1] = 20
283+assert(a == "234" and b == 234 and c == 1)
285+t.x = print; t[1] = 20
291+assert(a == print and c == 1)
296+a = setmetatable({x="u"}, {__concat = function (a,b) return a.x..'.'..b.x end})
305+assert(x == a..a and y == 5)
307+-- concat with 0 elements
308+assert(T.testC("concat 0; return 1") == "")
310+-- concat with 1 element
311+assert(T.testC("concat 1; return 1", "xuxu") == "xuxu")
317+local function B (x) return x and 1 or 0 end
319+local function count (x, n)
332+ prog = string.format(prog, n, n, n, n, n, n, n, n)
333+ local a,b,c,d,e,f,g,h = T.testC(prog, x)
334+ return B(a)+B(b)+B(c)+B(d)+B(e)+B(f)+B(g)+(100*B(h))
337+assert(count(3) == 2)
338+assert(count('alo') == 1)
339+assert(count('32') == 2)
340+assert(count({}) == 1)
341+assert(count(print) == 2)
342+assert(count(function () end) == 1)
343+assert(count(nil) == 1)
344+assert(count(io.stdin) == 1)
345+assert(count(nil, 15) == 100)
350+local function to (s, x, n)
352+ return T.testC(string.format("%s %d; return 1", s, n), x)
355+local null = T.pushuserdata(0)
356+local hfunc = string.gmatch("", "") -- a "heavy C function" (with upvalues)
357+assert(debug.getupvalue(hfunc, 1))
358+assert(to("tostring", {}) == nil)
359+assert(to("tostring", "alo") == "alo")
360+assert(to("tostring", 12) == "12")
361+assert(to("tostring", 12, 3) == nil)
362+assert(to("objsize", {}) == 0)
363+assert(to("objsize", {1,2,3}) == 3)
364+assert(to("objsize", "alo\0\0a") == 6)
365+assert(to("objsize", T.newuserdata(0)) == 0)
366+assert(to("objsize", T.newuserdata(101)) == 101)
367+assert(to("objsize", 124) == 0)
368+assert(to("objsize", true) == 0)
369+assert(to("tonumber", {}) == 0)
370+assert(to("tonumber", "12") == 12)
371+assert(to("tonumber", "s2") == 0)
372+assert(to("tonumber", 1, 20) == 0)
373+assert(to("topointer", 10) == null)
374+assert(to("topointer", true) == null)
375+assert(to("topointer", nil) == null)
376+assert(to("topointer", "abc") ~= null)
377+assert(to("topointer", string.rep("x", 10)) ==
378+ to("topointer", string.rep("x", 10))) -- short strings
380+ local s1 = string.rep("x", 300)
381+ local s2 = string.rep("x", 300)
382+ assert(to("topointer", s1) ~= to("topointer", s2))
384+assert(to("topointer", T.pushuserdata(20)) ~= null)
385+assert(to("topointer", io.read) ~= null) -- light C function
386+assert(to("topointer", hfunc) ~= null) -- "heavy" C function
387+assert(to("topointer", function () end) ~= null) -- Lua function
388+assert(to("topointer", io.stdin) ~= null) -- full userdata
389+assert(to("func2num", 20) == 0)
390+assert(to("func2num", T.pushuserdata(10)) == 0)
391+assert(to("func2num", io.read) ~= 0) -- light C function
392+assert(to("func2num", hfunc) ~= 0) -- "heavy" C function (with upvalue)
393+a = to("tocfunction", math.deg)
394+assert(a(3) == math.deg(3) and a == math.deg)
397+print("testing panic function")
400+ assert(T.checkpanic("pushstring hi; error") == "hi")
402+ -- using the stack inside panic
403+ assert(T.checkpanic("pushstring hi; error;",
407+ concat 3]]) == "hi alo mundo")
409+ -- "argerror" without frames
410+ assert(T.checkpanic("loadstring 4") ==
411+ "bad argument #4 (string expected, got no value)")
415+ T.totalmem(T.totalmem()+10000) -- set low memory limit (+10k)
416+ assert(T.checkpanic("newuserdata 20000") == MEMERRMSG)
417+ T.totalmem(0) -- restore high limit
421+ local msg = T.checkpanic[[
422+ pushstring "function f() f() end"
423+ loadstring -1; call 0 0
424+ getglobal f; call 0 0
426+ assert(string.find(msg, "stack overflow"))
429+ -- exit in panic still close to-be-closed variables
430+ assert(T.checkpanic([[
431+ pushstring "return {__close = function () Y = 'ho'; end}"
442+ concat 2 # concat original error with global Y
448+-- testing deep C stack
450+ print("testing stack overflow")
451+ collectgarbage("stop")
452+ checkerr("XXXX", T.testC, "checkstack 1000023 XXXX") -- too deep
453+ -- too deep (with no message)
454+ checkerr("^stack overflow$", T.testC, "checkstack 1000023 ''")
455+ local s = string.rep("pushnil;checkstack 1 XX;", 1000000)
456+ checkerr("overflow", T.testC, s)
457+ collectgarbage("restart")
461+local lim = _soft and 500 or 12000
462+local prog = {"checkstack " .. (lim * 2 + 100) .. "msg", "newtable"}
464+ prog[#prog + 1] = "pushnum " .. i
465+ prog[#prog + 1] = "pushnum " .. i * 10
468+prog[#prog + 1] = "rawgeti R 2" -- get global table in registry
469+prog[#prog + 1] = "insert " .. -(2*lim + 2)
472+ prog[#prog + 1] = "settable " .. -(2*(lim - i + 1) + 1)
475+prog[#prog + 1] = "return 2"
477+prog = table.concat(prog, ";")
478+local g, t = T.testC(prog)
480+for i = 1,lim do assert(t[i] == i*10); t[i] = undef end
481+assert(next(t) == nil)
487+ loadstring 2; pcall 0 1 0;
488+ pushvalue 3; insert -2; pcall 1 1 0;
491+]], "XX=150", function (a) assert(a==nil); return 3 end)
493+assert(type(a) == 'string' and XX == 150)
496+local function check3(p, ...)
499+ assert(string.find(arg[3], p))
501+check3(":1:", T.testC("loadstring 2; return *", "x="))
502+check3("%.", T.testC("loadfile 2; return *", "."))
503+check3("xxxx", T.testC("loadfile 2; return *", "xxxx"))
505+-- test errors in non protected threads
506+local function checkerrnopro (code, msg)
507+ local th = coroutine.create(function () end) -- create new thread
508+ local stt, err = pcall(T.testC, th, code) -- run code there
509+ assert(not stt and string.find(err, msg))
513+ collectgarbage("stop") -- avoid __gc with full stack
514+ checkerrnopro("pushnum 3; call 0 0", "attempt to call")
515+ print"testing stack overflow in unprotected thread"
516+ function F () F() end
517+ checkerrnopro("getglobal 'F'; call 0 0;", "stack overflow")
519+ collectgarbage("restart")
524+-- testing table access
528+ local a1 = T.testC("rawsetp 2 1; return 1", a, 20)
530+ assert(a[T.pushuserdata(1)] == 20)
531+ local a1, res = T.testC("rawgetp -1 1; return 2", a)
532+ assert(a == a1 and res == 20)
536+do -- using the table itself as index
539+ local prog = "gettable -1; return *"
540+ local res = {T.testC(prog, a)}
541+ assert(#res == 2 and res[1] == prog and res[2] == 10)
543+ local prog = "settable -2; return *"
544+ local res = {T.testC(prog, a, 20)}
546+ assert(#res == 1 and res[1] == prog)
550+ local prog = "rawget -1; return *"
551+ local res = {T.testC(prog, a)}
552+ assert(#res == 2 and res[1] == prog and res[2] == 10)
554+ local prog = "rawset -2; return *"
555+ local res = {T.testC(prog, a, 20)}
557+ assert(#res == 1 and res[1] == prog)
559+ -- using the table as the value to set
560+ local prog = "rawset -1; return *"
561+ local res = {T.testC(prog, 30, a)}
563+ assert(#res == 1 and res[1] == prog)
565+ local prog = "settable -1; return *"
566+ local res = {T.testC(prog, 40, a)}
568+ assert(#res == 1 and res[1] == prog)
570+ local prog = "rawseti -1 100; return *"
571+ local res = {T.testC(prog, a)}
573+ assert(#res == 1 and res[1] == prog)
575+ local prog = "seti -1 200; return *"
576+ local res = {T.testC(prog, a)}
578+ assert(#res == 1 and res[1] == prog)
582+x, y = T.testC("gettable 2; pushvalue 4; gettable 2; return 2",
584+assert(x == 0 and y == 12)
585+T.testC("settable -5", a, 3, 4, "x", 15)
588+x = T.testC("gettable 2; return 1", a) -- table and key are the same object!
590+T.testC("settable 2", a, "x") -- table and key are the same object!
593+b = setmetatable({p = a}, {})
594+getmetatable(b).__index = function (t, i) return t.p[i] end
595+local k, x = T.testC("gettable 3, return 2", 4, b, 20, 35, "x")
596+assert(x == 15 and k == 35)
597+k = T.testC("getfield 2 y, return 1", b)
599+getmetatable(b).__index = function (t, i) return a[i] end
600+getmetatable(b).__newindex = function (t, i,v ) a[i] = v end
601+y = T.testC("insert 2; gettable -5; return 1", 2, 3, 4, "y", b)
603+k = T.testC("settable -5, return 1", b, 3, 4, "x", 16)
604+assert(a.x == 16 and k == 4)
606+y = T.testC("gettable 2, return 1", b)
608+T.testC("settable 2", b, 19)
612+do -- testing getfield/setfield with long keys
613+ local t = {_012345678901234567890123456789012345678901234567890123456789 = 32}
614+ local a = T.testC([[
615+ getfield 2 _012345678901234567890123456789012345678901234567890123456789
619+ local a = T.testC([[
621+ setglobal _012345678901234567890123456789012345678901234567890123456789
623+ assert(_012345678901234567890123456789012345678901234567890123456789 == 33)
624+ _012345678901234567890123456789012345678901234567890123456789 = nil
629+t = pack(T.testC("next; return *", a, nil))
632+t = pack(T.testC("next; return *", a, nil))
633+tcheck(t, {n=3,a,'a',3})
634+t = pack(T.testC("next; pop 1; next; return *", a, nil))
642+ local A = T.testC[[ pushnum 10; pushnum 20; pushcclosure 2; return 1]]
643+ t, b, c = A([[pushvalue U0; pushvalue U1; pushvalue U2; return 3]])
644+ assert(b == 10 and c == 20 and type(t) == 'table')
645+ a, b = A([[tostring U3; tonumber U4; return 2]])
646+ assert(a == nil and b == 0)
647+ A([[pushnum 100; pushnum 200; replace U2; replace U1]])
648+ b, c = A([[pushvalue U1; pushvalue U2; return 2]])
649+ assert(b == 100 and c == 200)
650+ A([[replace U2; replace U1]], {x=1}, {x=2})
651+ b, c = A([[pushvalue U1; pushvalue U2; return 2]])
652+ assert(b.x == 1 and c.x == 2)
657+-- testing absent upvalues from C-function pointers
658+assert(T.testC[[isnull U1; return 1]] == true)
659+assert(T.testC[[isnull U100; return 1]] == true)
660+assert(T.testC[[pushvalue U1; return 1]] == nil)
662+local f = T.testC[[ pushnum 10; pushnum 20; pushcclosure 2; return 1]]
663+assert(T.upvalue(f, 1) == 10 and
664+ T.upvalue(f, 2) == 20 and
665+ T.upvalue(f, 3) == nil)
666+T.upvalue(f, 2, "xuxu")
667+assert(T.upvalue(f, 2) == "xuxu")
672+ local A = "checkstack 300 msg;" ..
673+ string.rep("pushnum 10;", 255) ..
674+ "pushcclosure 255; return 1"
677+ assert(A(("pushvalue U%d; return 1"):format(i)) == 10)
679+ assert(A("isnull U256; return 1"))
680+ assert(not A("isnil U256; return 1"))
685+-- testing get/setuservalue
687+checkerr("got number", debug.setuservalue, 3, {})
688+checkerr("got nil", debug.setuservalue, nil, {})
689+checkerr("got light userdata", debug.setuservalue, T.pushuserdata(1), {})
691+-- testing multiple user values
692+local b = T.newuserdata(0, 10)
694+ local v, p = debug.getuservalue(b, i)
695+ assert(v == nil and p)
697+do -- indices out of range
698+ local v, p = debug.getuservalue(b, -2)
699+ assert(v == nil and not p)
700+ local v, p = debug.getuservalue(b, 11)
701+ assert(v == nil and not p)
703+local t = {true, false, 4.56, print, {}, b, "XYZ"}
704+for k, v in ipairs(t) do
705+ debug.setuservalue(b, v, k)
707+for k, v in ipairs(t) do
708+ local v1, p = debug.getuservalue(b, k)
709+ assert(v1 == v and p)
712+assert(not debug.getuservalue(4))
714+debug.setuservalue(b, function () return 10 end, 10)
715+collectgarbage() -- function should not be collected
716+assert(debug.getuservalue(b, 10)() == 10)
718+debug.setuservalue(b, 134)
719+collectgarbage() -- number should not be a problem for collector
720+assert(debug.getuservalue(b) == 134)
723+-- test barrier for uservalues
725+ local oldmode = collectgarbage("incremental")
727+ assert(T.gccolor(b) == "black")
728+ debug.setuservalue(b, {x = 100})
729+ T.gcstate("pause") -- complete collection
730+ assert(debug.getuservalue(b).x == 100) -- uvalue should be there
731+ collectgarbage(oldmode)
734+-- long chain of userdata
736+ local bb = T.newuserdata(0, 1)
737+ debug.setuservalue(bb, b)
740+collectgarbage() -- nothing should not be collected
742+ b = debug.getuservalue(b)
744+assert(debug.getuservalue(b).x == 100)
748+-- testing locks (refs)
750+-- reuse of references
757+for i=1,Lim do -- lock many objects
761+assert(T.ref(nil) == -1 and T.getref(-1) == nil)
762+T.unref(-1); T.unref(-1)
764+for i=1,Lim do -- unlock all them
768+local function printlocks ()
769+ local f = T.makeCfunc("gettable R; return 1")
778+for i=1,Lim do -- lock many objects
782+for i=1,Lim,2 do -- unlock half of them
786+assert(type(T.getref(Arr[2])) == 'table')
789+assert(T.getref(-1) == nil)
796+assert(type(T.getref(a)) == 'table')
799+-- colect in cl the `val' of all collected userdata
805+ local udval = T.udataval(x)
806+ table.insert(cl, udval)
807+ local d = T.newuserdata(100) -- create garbage
809+ assert(debug.getmetatable(x).__gc == F)
810+ assert(load("table.insert({}, {})"))() -- create more garbage
811+ assert(not collectgarbage()) -- GC during GC (no op)
812+ local dummy = {} -- create more garbage during GC
814+ assert(type(A) == "userdata")
815+ assert(T.udataval(A) == B)
816+ debug.getmetatable(A) -- just access it
818+ A = x -- ressurect userdata
825+-- test whether udate collection frees memory in the right time
829+ local x = collectgarbage("count");
830+ local a = T.newuserdata(5001)
831+ assert(T.testC("objsize 2; return 1", a) == 5001)
832+ assert(collectgarbage("count") >= x+4)
835+ assert(collectgarbage("count") <= x+1)
836+ -- udata without finalizer
837+ x = collectgarbage("count")
838+ collectgarbage("stop")
839+ for i=1,1000 do T.newuserdata(0) end
840+ assert(collectgarbage("count") > x+10)
842+ assert(collectgarbage("count") <= x+1)
843+ -- udata with finalizer
845+ x = collectgarbage("count")
846+ collectgarbage("stop")
847+ a = {__gc = function () end}
848+ for i=1,1000 do debug.setmetatable(T.newuserdata(0), a) end
849+ assert(collectgarbage("count") >= x+10)
850+ collectgarbage() -- this collection only calls TM, without freeing memory
851+ assert(collectgarbage("count") >= x+10)
852+ collectgarbage() -- now frees memory
853+ assert(collectgarbage("count") <= x+1)
854+ collectgarbage("restart")
858+collectgarbage("stop")
860+-- create 3 userdatas with tag `tt'
861+a = T.newuserdata(0); debug.setmetatable(a, tt); local na = T.udataval(a)
862+b = T.newuserdata(0); debug.setmetatable(b, tt); local nb = T.udataval(b)
863+c = T.newuserdata(0); debug.setmetatable(c, tt); local nc = T.udataval(c)
865+-- create userdata without meta table
869+checkerr("FILE%* expected, got userdata", io.input, a)
870+checkerr("FILE%* expected, got userdata", io.input, x)
872+assert(debug.getmetatable(x) == nil and debug.getmetatable(y) == nil)
877+t = {T.getref(d), T.getref(e), T.getref(f)}
878+assert(t[1] == a and t[2] == b and t[3] == c)
881+T.unref(e); T.unref(f)
885+-- check that unref objects have been collected
886+assert(#cl == 1 and cl[1] == nc)
889+assert(type(x) == 'userdata' and debug.getmetatable(x) == tt)
891+tt.b = b -- create cycle
892+tt=nil -- frees tt for GC
896+local n5 = T.newuserdata(0)
897+debug.setmetatable(n5, {__gc=F})
901+-- check order of collection
902+assert(cl[2] == n5 and cl[3] == nb and cl[4] == na)
904+collectgarbage"restart"
909+ a[i] = T.newuserdata(0)
910+ debug.setmetatable(a[i], {__gc=F})
911+ na[i] = T.udataval(a[i])
914+a = nil; collectgarbage()
916+for i=1,30 do assert(cl[i] == na[i]) end
920+for i=2,Lim,2 do -- unlock the other half
924+x = T.newuserdata(41); debug.setmetatable(x, {__gc=F})
925+assert(T.testC("objsize 2; return 1", x) == 41)
930+-- old `x' cannot be collected (`a' still uses it)
932+for n in pairs(a) do a[n] = undef end
934+assert(#cl == 1 and cl[1] == x) -- old `x' must be collected
937+assert(T.testC("compare EQ 2 4; return 1", print, 1, print, 20))
938+assert(T.testC("compare EQ 3 2; return 1", 'alo', "alo"))
939+assert(T.testC("compare EQ 2 3; return 1", nil, nil))
940+assert(not T.testC("compare EQ 2 3; return 1", {}, {}))
941+assert(not T.testC("compare EQ 2 3; return 1"))
942+assert(not T.testC("compare EQ 2 3; return 1", 3))
944+-- testing lua_equal with fallbacks
947+ local t = {__eq = function (a,b) return map[a] == map[b] end}
949+ local u = T.newuserdata(0)
950+ debug.setmetatable(u, t)
954+ assert(f(10) == f(10))
955+ assert(f(10) ~= f(11))
956+ assert(T.testC("compare EQ 2 3; return 1", f(10), f(10)))
957+ assert(not T.testC("compare EQ 2 3; return 1", f(10), f(20)))
959+ assert(f(10) ~= f(10))
966+-- testing changing hooks during hooks
969+ # set a line hook after 3 count hooks
972+ pushvalue -3; append -2
973+ pushvalue -2; append -2
975+local a = 1 -- counting
977+a = 1 -- count hook (set line hook)
982+assert(t[1] == "line")
984+assert(t[3] == "line" and t[4] == line + 1)
985+assert(t[5] == "line" and t[6] == line + 2)
990+-------------------------------------------------------------------------
991+do -- testing errors during GC
993+ collectgarbage("stop")
996+ a[i] = T.newuserdata(i) -- creates several udata
998+ for i=1,20,2 do -- mark half of them to raise errors during GC
999+ debug.setmetatable(a[i],
1000+ {__gc = function (x) error("@expected error in gc") end})
1002+ for i=2,20,2 do -- mark the other half to count and to create more garbage
1003+ debug.setmetatable(a[i], {__gc = function (x) load("A=A+1")() end})
1008+ assert(A == 10) -- number of normal collections
1009+ collectgarbage("restart")
1013+-------------------------------------------------------------------------
1014+-- test for userdata vals
1016+ local a = {}; local lim = 30
1017+ for i=0,lim do a[i] = T.pushuserdata(i) end
1018+ for i=0,lim do assert(T.udataval(a[i]) == i) end
1019+ for i=0,lim do assert(T.pushuserdata(i) == a[i]) end
1020+ for i=0,lim do a[a[i]] = i end
1021+ for i=0,lim do a[T.pushuserdata(i)] = i end
1022+ assert(type(tostring(a[1])) == "string")
1026+-------------------------------------------------------------------------
1027+-- testing multiple states
1028+T.closestate(T.newstate());
1032+assert(T.doremote(L1, "X='a'; return 'a'") == 'a')
1035+assert(#pack(T.doremote(L1, "function f () return 'alo', 3 end; f()")) == 0)
1037+a, b = T.doremote(L1, "return f()")
1038+assert(a == 'alo' and b == '3')
1040+T.doremote(L1, "_ERRORMESSAGE = nil")
1041+-- error: `sin' is not defined
1042+a, b, c = T.doremote(L1, "return sin(1)")
1043+assert(a == nil and c == 2) -- 2 == run-time error
1045+-- error: syntax error
1046+a, b, c = T.doremote(L1, "return a+")
1047+assert(a == nil and c == 3 and type(b) == "string") -- 3 == syntax error
1050+a, b, c = T.doremote(L1, [[
1051+ string = require'string'
1052+ a = require'_G'; assert(a == _G and require("_G") == a)
1053+ io = require'io'; assert(type(io.read) == "function")
1054+ assert(require("io") == io)
1055+ a = require'table'; assert(type(a.insert) == "function")
1056+ a = require'debug'; assert(type(a.getlocal) == "function")
1057+ a = require'math'; assert(type(a.sin) == "function")
1058+ return string.sub('okinama', 1, 2)
1067+T.doremote(L1, "a = {}")
1068+T.testC(L1, [[getglobal "a"; pushstring "x"; pushint 1;
1070+assert(T.doremote(L1, "return a.x") == "1")
1077+-------------------------------------------------------------------------
1078+-- testing to-be-closed variables
1079+-------------------------------------------------------------------------
1080+print"testing to-be-closed variables"
1083+ local openresource = {}
1085+ local function newresource ()
1086+ local x = setmetatable({10}, {__close = function(y)
1087+ assert(openresource[#openresource] == y)
1088+ openresource[#openresource] = nil
1091+ openresource[#openresource + 1] = x
1095+ local a, b = T.testC([[
1096+ call 0 1 # create resource
1098+ toclose -2 # mark call result to be closed
1099+ toclose -1 # mark nil to be closed (will be ignored)
1102+ assert(a[1] == 11 and b == nil)
1103+ assert(#openresource == 0) -- was closed
1105+ -- repeat the test, but calling function in a 'multret' context
1106+ local a = {T.testC([[
1107+ call 0 1 # create resource
1108+ toclose 2 # mark it to be closed
1111+ assert(type(a[1]) == "string" and a[2][1] == 11)
1112+ assert(#openresource == 0) -- was closed
1114+ -- closing by error
1115+ local a, b = pcall(T.makeCfunc[[
1116+ call 0 1 # create resource
1117+ toclose -1 # mark it to be closed
1118+ error # resource is the error object
1120+ assert(a == false and b[1] == 11)
1121+ assert(#openresource == 0) -- was closed
1123+ -- non-closable value
1124+ local a, b = pcall(T.makeCfunc[[
1125+ newtable # create non-closable object
1126+ toclose -1 # mark it to be closed (should raise an error)
1127+ abort # will not be executed
1129+ assert(a == false and
1130+ string.find(b, "non%-closable value"))
1132+ local function check (n)
1133+ assert(#openresource == n)
1136+ -- closing resources with 'closeslot'
1138+ local a = T.testC([[
1139+ pushvalue 2 # stack: S, NR, CH, NR
1140+ call 0 1 # create resource; stack: S, NR, CH, R
1141+ toclose -1 # mark it to be closed
1142+ pushvalue 2 # stack: S, NR, CH, R, NR
1143+ call 0 1 # create another resource; stack: S, NR, CH, R, R
1144+ toclose -1 # mark it to be closed
1145+ pushvalue 3 # stack: S, NR, CH, R, R, CH
1146+ pushint 2 # there should be two open resources
1147+ call 1 0 # stack: S, NR, CH, R, R
1148+ closeslot -1 # close second resource
1149+ pushvalue 3 # stack: S, NR, CH, R, R, CH
1150+ pushint 1 # there should be one open resource
1151+ call 1 0 # stack: S, NR, CH, R, R
1153+ setglobal "xxx" # previous op. erased the slot
1154+ pop 1 # pop other resource from the stack
1156+ return 1 # return stack size
1157+ ]], newresource, check)
1158+ assert(a == 3 and _ENV.xxx == nil) -- no extra items left in the stack
1160+ -- closing resources with 'pop'
1161+ local a = T.testC([[
1162+ pushvalue 2 # stack: S, NR, CH, NR
1163+ call 0 1 # create resource; stack: S, NR, CH, R
1164+ toclose -1 # mark it to be closed
1165+ pushvalue 2 # stack: S, NR, CH, R, NR
1166+ call 0 1 # create another resource; stack: S, NR, CH, R, R
1167+ toclose -1 # mark it to be closed
1168+ pushvalue 3 # stack: S, NR, CH, R, R, CH
1169+ pushint 2 # there should be two open resources
1170+ call 1 0 # stack: S, NR, CH, R, R
1171+ pop 1 # pop second resource
1172+ pushvalue 3 # stack: S, NR, CH, R, CH
1173+ pushint 1 # there should be one open resource
1174+ call 1 0 # stack: S, NR, CH, R
1175+ pop 1 # pop other resource from the stack
1176+ pushvalue 3 # stack: S, NR, CH, CH
1177+ pushint 0 # there should be no open resources
1178+ call 1 0 # stack: S, NR, CH
1180+ return 1 # return stack size
1181+ ]], newresource, check)
1182+ assert(a == 3) -- no extra items left in the stack
1184+ -- non-closable value
1185+ local a, b = pcall(T.makeCfunc[[
1189+ assert(not a and string.find(b, "(C temporary)"))
1195+** {==================================================================
1196+** Testing memory limits
1197+** ===================================================================
1200+print("memory-allocation errors")
1202+checkerr("block too big", T.newuserdata, math.maxinteger)
1204+local f = load"local a={}; for i=1,100000 do a[i]=i end"
1206+checkerr(MEMERRMSG, f)
1207+T.alloccount() -- remove limit
1210+-- test memory errors; increase limit for maximum memory by steps,
1211+-- o that we get memory errors in all allocations of a given
1212+-- task, until there is enough memory to complete the task without
1214+local function testbytes (s, f)
1216+ local M = T.totalmem()
1220+ collectgarbage(); collectgarbage()
1222+ a, b = T.testC("pcall 0 1 0; pushstatus; return 2", f)
1223+ T.totalmem(0) -- remove limit
1224+ if a and b == "OK" then break end -- stop when no more errors
1225+ if b ~= "OK" and b ~= MEMERRMSG then -- not a memory error?
1226+ error(a, 0) -- propagate it
1228+ M = M + 7 -- increase memory limit
1230+ print(string.format("minimum memory for %s: %d bytes", s, M - oldM))
1234+-- test memory errors; increase limit for number of allocations one
1235+-- by one, so that we get memory errors in all allocations of a given
1236+-- task, until there is enough allocations to complete the task without
1239+local function testalloc (s, f)
1244+ collectgarbage(); collectgarbage()
1246+ a, b = T.testC("pcall 0 1 0; pushstatus; return 2", f)
1247+ T.alloccount() -- remove limit
1248+ if a and b == "OK" then break end -- stop when no more errors
1249+ if b ~= "OK" and b ~= MEMERRMSG then -- not a memory error?
1250+ error(a, 0) -- propagate it
1252+ M = M + 1 -- increase allocation limit
1254+ print(string.format("minimum allocations for %s: %d allocations", s, M))
1259+local function testamem (s, f)
1261+ return testbytes(s, f)
1266+b = testamem("doing nothing", function () return 10 end)
1269+-- testing memory errors when creating a new state
1271+testamem("state creation", function ()
1272+ local st = T.newstate()
1273+ if st then T.closestate(st) end -- close new state
1277+testamem("empty-table creation", function ()
1281+testamem("string creation", function ()
1282+ return "XXX" .. "YYY"
1285+testamem("coroutine creation", function()
1286+ return coroutine.create(print)
1290+-- testing to-be-closed variables
1291+testamem("to-be-closed variables", function()
1295+ setmetatable({}, {__close = function () flag = true end})
1305+-- get main thread from registry (at index LUA_RIDX_MAINTHREAD == 1)
1306+local mt = T.testC("rawgeti R 1; return 1")
1307+assert(type(mt) == "thread" and coroutine.running() == mt)
1311+local function expand (n,s)
1312+ if n==0 then return "" end
1313+ local e = string.rep("=", n)
1314+ return string.format("T.doonnewstack([%s[ %s;\n collectgarbage(); %s]%s])\n",
1315+ e, s, expand(n-1,s), e)
1318+G=0; collectgarbage(); a =collectgarbage("count")
1319+load(expand(20,"G=G+1"))()
1320+assert(G==20); collectgarbage(); -- assert(gcinfo() <= a+1)
1323+testamem("running code on new thread", function ()
1324+ return T.doonnewstack("local x=1") == 0 -- try to create thread
1328+-- testing memory x compiler
1330+testamem("loadstring", function ()
1331+ return load("x=1") -- try to do load a string
1336+local function foo () return end
1339+for i = 1, #t do AA = AA .. t[i] end
1343+-- testing memory x dofile
1345+local t =os.tmpname()
1346+local f = assert(io.open(t, "w"))
1349+testamem("dofile", function ()
1350+ local a = loadfile(t)
1353+assert(os.remove(t))
1354+assert(_G.AA == "aaax")
1357+-- other generic tests
1359+testamem("gsub", function ()
1360+ local a, b = string.gsub("alo alo", "(a)", function (x) return x..'b' end)
1361+ return (a == 'ablo ablo')
1364+testamem("dump/undump", function ()
1365+ local a = load(testprog)
1366+ local b = a and string.dump(a)
1373+local t = os.tmpname()
1374+testamem("file creation", function ()
1375+ local f = assert(io.open(t, 'w'))
1376+ assert (not io.open"nomenaoexistente")
1378+ return not loadfile'nomenaoexistente'
1380+assert(os.remove(t))
1382+testamem("table creation", function ()
1383+ local a, lim = {}, 10
1384+ for i=1,lim do a[i] = i; a[i..'a'] = {} end
1385+ return (type(a[lim..'a']) == 'table' and a[lim] == lim)
1388+testamem("constructors", function ()
1389+ local a = {10, 20, 30, 40, 50; a=1, b=2, c=3, d=4, e=5}
1390+ return (type(a) == 'table' and a.e == 5)
1395+testamem("closure creation", function ()
1397+ return function (x) return b + x end
1399+ return (close(2)(4) == 6)
1402+testamem("using coroutines", function ()
1403+ local a = coroutine.wrap(function ()
1404+ coroutine.yield(string.rep("a", 10))
1407+ assert(string.len(a()) == 10)
1411+do -- auxiliary buffer
1413+ local a = {}; for i = 1, lim do a[i] = "01234567890123456789" end
1414+ testamem("auxiliary buffer", function ()
1415+ return (#table.concat(a, ",") == 20*lim + lim - 1)
1419+testamem("growing stack", function ()
1420+ local function foo (n)
1421+ if n == 0 then return 1 else return 1 + foo(n - 1) end
1426+-- }==================================================================
1429+do -- testing failing in 'lua_checkstack'
1430+ local res = T.testC([[rawcheckstack 500000; return 1]])
1431+ assert(res == false)
1432+ local L = T.newstate()
1433+ T.alloccount(0) -- will be unable to reallocate the stack
1434+ res = T.testC(L, [[rawcheckstack 5000; return 1]])
1437+ assert(res == false)
1440+do -- closing state with no extra memory
1441+ local L = T.newstate()
1447+do -- garbage collection with no extra memory
1448+ local L = T.newstate()
1450+ local res = (T.doremote(L, [[
1452+ local T = require"T"
1454+ for i = 1, 1000 do a[i] = 'i' .. i end -- grow string table
1455+ local stsize, stuse = T.querystr()
1456+ assert(stuse > 1000)
1457+ local function foo (n)
1458+ if n > 0 then foo(n - 1) end
1460+ foo(180) -- grow stack
1461+ local _, stksize = T.stacklevel()
1462+ assert(stksize > 180)
1467+ -- stack and string table could not be reallocated,
1468+ -- so they kept their sizes (without errors)
1469+ assert(select(2, T.stacklevel()) == stksize)
1470+ assert(T.querystr() == stsize)
1473+ assert(res == 'ok')
1479+-- testing some auxlib functions
1480+local function gsub (a, b, c)
1481+ a, b = T.testC("gsub 2 3 4; gettop; return 2", a, b, c)
1486+assert(gsub("alo.alo.uhuh.", ".", "//") == "alo//alo//uhuh//")
1487+assert(gsub("alo.alo.uhuh.", "alo", "//") == "//.//.uhuh.")
1488+assert(gsub("", "alo", "//") == "")
1489+assert(gsub("...", ".", "/.") == "/././.")
1490+assert(gsub("...", "...", "") == "")
1493+-- testing luaL_newmetatable
1494+local mt_xuxu, res, top = T.testC("newmetatable xuxu; gettop; return 3")
1495+assert(type(mt_xuxu) == "table" and res and top == 3)
1496+local d, res, top = T.testC("newmetatable xuxu; gettop; return 3")
1497+assert(mt_xuxu == d and not res and top == 3)
1498+d, res, top = T.testC("newmetatable xuxu1; gettop; return 3")
1499+assert(mt_xuxu ~= d and res and top == 3)
1501+x = T.newuserdata(0);
1502+y = T.newuserdata(0);
1503+T.testC("pushstring xuxu; gettable R; setmetatable 2", x)
1504+assert(getmetatable(x) == mt_xuxu)
1506+-- testing luaL_testudata
1507+-- correct metatable
1508+local res1, res2, top = T.testC([[testudata -1 xuxu
1512+assert(res1 and res2 and top == 4)
1515+res1, res2, top = T.testC([[testudata -1 xuxu1
1519+assert(not res1 and not res2 and top == 4)
1521+-- non-existent type
1522+res1, res2, top = T.testC([[testudata -1 xuxu2
1526+assert(not res1 and not res2 and top == 4)
1528+-- userdata has no metatable
1529+res1, res2, top = T.testC([[testudata -1 xuxu
1533+assert(not res1 and not res2 and top == 4)
1537+ local r = debug.getregistry()
1538+ assert(r.xuxu == mt_xuxu and r.xuxu1 == d)
1539+ r.xuxu = nil; r.xuxu1 = nil