mirror of
https://github.com/luau-lang/luau.git
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325 lines
7.4 KiB
Lua
325 lines
7.4 KiB
Lua
-- This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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-- This file is based on Lua 5.x tests -- https://github.com/lua/lua/tree/master/testes
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print('testing garbage collection')
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collectgarbage()
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_G["while"] = 234
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limit = 5000
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contCreate = 0
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print('tables')
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while contCreate <= limit do
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local a = {}; a = nil
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contCreate = contCreate+1
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end
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a = "a"
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contCreate = 0
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print('strings')
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while contCreate <= limit do
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a = contCreate .. "b";
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a = string.gsub(a, '(%d%d*)', string.upper)
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a = "a"
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contCreate = contCreate+1
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end
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contCreate = 0
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a = {}
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print('functions')
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function a:test ()
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while contCreate <= limit do
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loadstring(string.format("function temp(a) return 'a%d' end", contCreate))()
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assert(temp() == string.format('a%d', contCreate))
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contCreate = contCreate+1
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end
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end
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a:test()
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-- collection of functions without locals, globals, etc.
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do local f = function () end end
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print('long strings')
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x = "01234567890123456789012345678901234567890123456789012345678901234567890123456789"
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assert(string.len(x)==80)
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s = ''
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n = 0
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k = 300
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while n < k do s = s..x; n=n+1; j=tostring(n) end
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assert(string.len(s) == k*80)
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s = string.sub(s, 1, 20000)
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s, i = string.gsub(s, '(%d%d%d%d)', math.sin)
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assert(i==20000/4)
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s = nil
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x = nil
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assert(_G["while"] == 234)
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local bytes = gcinfo()
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while 1 do
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local nbytes = gcinfo()
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if nbytes < bytes then break end -- run until gc
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bytes = nbytes
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a = {}
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end
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local function dosteps (siz)
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collectgarbage()
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collectgarbage("stop")
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local a = {}
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for i=1,100 do a[i] = {{}}; local b = {} end
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local x = gcinfo()
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local i = 0
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repeat
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i = i+1
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until collectgarbage("step", siz)
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assert(gcinfo() < x)
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return i
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end
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assert(dosteps(0) > 10)
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assert(dosteps(6) < dosteps(2))
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assert(dosteps(10000) == 1)
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-- assert(collectgarbage("step", 1000000) == true)
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-- assert(collectgarbage("step", 1000000))
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do
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local x = gcinfo()
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collectgarbage()
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collectgarbage("stop")
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repeat
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local a = {}
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until gcinfo() > 1000
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collectgarbage("restart")
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repeat
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local a = {}
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until gcinfo() < 1000
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end
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lim = 15
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a = {}
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-- fill a with `collectable' indices
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for i=1,lim do a[{}] = i end
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b = {}
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for k,v in pairs(a) do b[k]=v end
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-- remove all indices and collect them
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for n in pairs(b) do
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a[n] = nil
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assert(type(n) == 'table' and next(n) == nil)
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collectgarbage()
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end
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b = nil
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collectgarbage()
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for n in pairs(a) do error("cannot be here") end
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for i=1,lim do a[i] = i end
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for i=1,lim do assert(a[i] == i) end
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print('weak tables')
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a = {}; setmetatable(a, {__mode = 'k'});
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-- fill a with some `collectable' indices
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for i=1,lim do a[{}] = i end
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-- and some non-collectable ones
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for i=1,lim do local t={}; a[t]=t end
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for i=1,lim do a[i] = i end
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for i=1,lim do local s=string.rep('@', i); a[s] = s..'#' end
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collectgarbage()
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local i = 0
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for k,v in pairs(a) do assert(k==v or k..'#'==v); i=i+1 end
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assert(i == 3*lim)
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a = {}; setmetatable(a, {__mode = 'v'});
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a[1] = string.rep('b', 21)
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collectgarbage()
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assert(a[1]) -- strings are *values*
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a[1] = nil
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-- fill a with some `collectable' values (in both parts of the table)
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for i=1,lim do a[i] = {} end
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for i=1,lim do a[i..'x'] = {} end
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-- and some non-collectable ones
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for i=1,lim do local t={}; a[t]=t end
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for i=1,lim do a[i+lim]=i..'x' end
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collectgarbage()
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local i = 0
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for k,v in pairs(a) do assert(k==v or k-lim..'x' == v); i=i+1 end
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assert(i == 2*lim)
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a = {}; setmetatable(a, {__mode = 'vk'});
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local x, y, z = {}, {}, {}
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-- keep only some items
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a[1], a[2], a[3] = x, y, z
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a[string.rep('$', 11)] = string.rep('$', 11)
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-- fill a with some `collectable' values
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for i=4,lim do a[i] = {} end
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for i=1,lim do a[{}] = i end
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for i=1,lim do local t={}; a[t]=t end
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collectgarbage()
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assert(next(a) ~= nil)
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local i = 0
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for k,v in pairs(a) do
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assert((k == 1 and v == x) or
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(k == 2 and v == y) or
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(k == 3 and v == z) or k==v);
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i = i+1
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end
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assert(i == 4)
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x,y,z=nil
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collectgarbage()
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assert(next(a) == string.rep('$', 11))
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-- shrinking tables reduce their capacity; confirming the shrinking is difficult but we can at least test the surface level behavior
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a = {}; setmetatable(a, {__mode = 'ks'})
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for i=1,lim do a[{}] = i end
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collectgarbage()
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assert(next(a) == nil)
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-- testing userdata
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collectgarbage("stop") -- stop collection
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local u = newproxy(true)
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local s = 0
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local a = {[u] = 0}; setmetatable(a, {__mode = 'vk'})
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for i=1,10 do a[newproxy(true)] = i end
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-- for k in pairs(a) do assert(getmetatable(k) == getmetatable(u)) end
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local a1 = {}; for k,v in pairs(a) do a1[k] = v end
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for k,v in pairs(a1) do a[v] = k end
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for i =1,10 do assert(a[i]) end
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getmetatable(u).a = a1
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getmetatable(u).u = u
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do
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local u = u
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getmetatable(u).__gc = function (o)
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assert(a[o] == 10-s)
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assert(a[10-s] == nil) -- udata already removed from weak table
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assert(getmetatable(o) == getmetatable(u))
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assert(getmetatable(o).a[o] == 10-s)
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s=s+1
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end
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end
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a1, u = nil
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assert(next(a) ~= nil)
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collectgarbage()
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-- assert(s==11)
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collectgarbage()
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assert(next(a) == nil) -- finalized keys are removed in two cycles
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-- __gc x weak tables
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local u = newproxy(true)
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setmetatable(getmetatable(u), {__mode = "v"})
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getmetatable(u).__gc = function (o) os.exit(1) end -- cannot happen
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collectgarbage()
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local u = newproxy(true)
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local m = getmetatable(u)
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m.x = {[{0}] = 1; [0] = {1}}; setmetatable(m.x, {__mode = "kv"});
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m.__gc = function (o)
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assert(next(getmetatable(o).x) == nil)
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m = 10
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end
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u, m = nil
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collectgarbage()
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-- assert(m==10)
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-- errors during collection
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u = newproxy(true)
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getmetatable(u).__gc = function () error "!!!" end
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u = nil
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-- assert(not pcall(collectgarbage))
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collectgarbage()
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if not rawget(_G, "_soft") then
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print("deep structures")
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local a = {}
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for i = 1,200000 do
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a = {next = a}
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end
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collectgarbage()
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end
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-- create many threads with self-references and open upvalues
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local thread_id = 0
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local threads = {}
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function fn(thread)
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local x = {}
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threads[thread_id] = function()
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thread = x
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end
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coroutine.yield()
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end
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while thread_id < 1000 do
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local thread = coroutine.create(fn)
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coroutine.resume(thread, thread)
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thread_id = thread_id + 1
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end
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-- create a userdata to be collected when state is closed
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do
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local newproxy,assert,type,print,getmetatable =
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newproxy,assert,type,print,getmetatable
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local u = newproxy(true)
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local tt = getmetatable(u)
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___Glob = {u} -- avoid udata being collected before program end
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tt.__gc = function (o)
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assert(getmetatable(o) == tt)
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-- create new objects during GC
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local a = 'xuxu'..(10+3)..'joao', {}
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___Glob = o -- resurrect object!
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newproxy(o) -- creates a new one with same metatable
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print(">>> closing state " .. "<<<\n")
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end
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end
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-- create several udata to raise errors when collected while closing state
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do
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local u = newproxy(true)
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getmetatable(u).__gc = function (o) return o + 1 end
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table.insert(___Glob, u) -- preserve udata until the end
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for i = 1,10 do table.insert(___Glob, newproxy(true)) end
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end
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-- create threads that die together with their unmarked upvalues
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do
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local t = {}
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for i = 1,100 do
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local c = coroutine.wrap(function()
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local uv = {i + 1}
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local function f()
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return uv[1] * 10
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end
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coroutine.yield(uv[1])
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uv = {i + 2}
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coroutine.yield(f())
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end)
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assert(c() == i + 1)
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table.insert(t, c)
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end
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for i = 1,100 do
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t[i] = nil
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end
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collectgarbage()
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end
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return('OK')
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