mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-13 05:20:38 +00:00
76070f8da2
* Reoptimized math.min/max/bit32 builtins assuming at least 2 arguments are used (1-2% lift on some benchmarks) * Type errors that mention function types no longer have redundant parenthesis around return type * Luau REPL now supports --compile=remarks which displays the source code with optimization remarks embedded as comments * Builtin calls are slightly faster when called with 1-2 arguments (~1% improvement in some benchmarks)
482 lines
13 KiB
Lua
482 lines
13 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 metatables')
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local unpack = table.unpack
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assert(getmetatable{} == nil)
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assert(getmetatable(4) == nil)
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assert(getmetatable(nil) == nil)
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a={}; setmetatable(a, {__metatable = "xuxu",
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__tostring=function(x) return x.name end})
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assert(getmetatable(a) == "xuxu")
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ud=newproxy(true); getmetatable(ud).__metatable = "xuxu"
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assert(getmetatable(ud) == "xuxu")
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local res,err = pcall(tostring, a)
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assert(not res and err == "'__tostring' must return a string")
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-- cannot change a protected metatable
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assert(pcall(setmetatable, a, {}) == false)
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a.name = "gororoba"
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assert(tostring(a) == "gororoba")
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local a, t = {10,20,30; x="10", y="20"}, {}
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assert(setmetatable(a,t) == a)
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assert(getmetatable(a) == t)
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assert(setmetatable(a,nil) == a)
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assert(getmetatable(a) == nil)
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assert(setmetatable(a,t) == a)
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function f (t, i, e)
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assert(not e)
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local p = rawget(t, "parent")
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return (p and p[i]+3), "dummy return"
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end
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t.__index = f
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a.parent = {z=25, x=12, [4] = 24}
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assert(a[1] == 10 and a.z == 28 and a[4] == 27 and a.x == "10")
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collectgarbage()
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a = setmetatable({}, t)
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function f(t, i, v) rawset(t, i, v-3) end
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t.__newindex = f
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a[1] = 30; a.x = "101"; a[5] = 200
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assert(a[1] == 27 and a.x == 98 and a[5] == 197)
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local c = {}
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a = setmetatable({}, t)
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t.__newindex = c
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a[1] = 10; a[2] = 20; a[3] = 90
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assert(c[1] == 10 and c[2] == 20 and c[3] == 90)
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do
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local a;
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a = setmetatable({}, {__index = setmetatable({},
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{__index = setmetatable({},
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{__index = function (_,n) return a[n-3]+4, "lixo" end})})})
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a[0] = 20
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for i=0,10 do
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assert(a[i*3] == 20 + i*4)
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end
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end
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do -- newindex
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local foi
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local a = {}
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for i=1,10 do a[i] = 0; a['a'..i] = 0; end
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setmetatable(a, {__newindex = function (t,k,v) foi=true; rawset(t,k,v) end})
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foi = false; a[1]=0; assert(not foi)
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foi = false; a['a1']=0; assert(not foi)
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foi = false; a['a11']=0; assert(foi)
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foi = false; a[11]=0; assert(foi)
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foi = false; a[1]=nil; assert(not foi)
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foi = false; a[1]=nil; assert(foi)
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end
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function f (t, ...) return t, {...} end
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t.__call = f
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do
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local x,y = a(unpack{'a', 1})
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assert(x==a and y[1]=='a' and y[2]==1 and y[3]==nil)
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x,y = a()
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assert(x==a and y[1]==nil)
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end
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local b = setmetatable({}, t)
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setmetatable(b,t)
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function f(op)
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return function (...) cap = {[0] = op, ...} ; return (...) end
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end
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t.__add = f("add")
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t.__sub = f("sub")
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t.__mul = f("mul")
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t.__div = f("div")
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t.__mod = f("mod")
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t.__unm = f("unm")
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t.__pow = f("pow")
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assert(b+5 == b)
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assert(cap[0] == "add" and cap[1] == b and cap[2] == 5 and cap[3]==nil)
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assert(b+'5' == b)
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assert(cap[0] == "add" and cap[1] == b and cap[2] == '5' and cap[3]==nil)
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assert(5+b == 5)
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assert(cap[0] == "add" and cap[1] == 5 and cap[2] == b and cap[3]==nil)
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assert('5'+b == '5')
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assert(cap[0] == "add" and cap[1] == '5' and cap[2] == b and cap[3]==nil)
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b=b-3; assert(getmetatable(b) == t)
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assert(5-a == 5)
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assert(cap[0] == "sub" and cap[1] == 5 and cap[2] == a and cap[3]==nil)
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assert('5'-a == '5')
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assert(cap[0] == "sub" and cap[1] == '5' and cap[2] == a and cap[3]==nil)
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assert(a*a == a)
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assert(cap[0] == "mul" and cap[1] == a and cap[2] == a and cap[3]==nil)
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assert(a/0 == a)
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assert(cap[0] == "div" and cap[1] == a and cap[2] == 0 and cap[3]==nil)
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assert(a%2 == a)
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assert(cap[0] == "mod" and cap[1] == a and cap[2] == 2 and cap[3]==nil)
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assert(-a == a)
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assert(cap[0] == "unm" and cap[1] == a)
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assert(a^4 == a)
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assert(cap[0] == "pow" and cap[1] == a and cap[2] == 4 and cap[3]==nil)
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assert(a^'4' == a)
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assert(cap[0] == "pow" and cap[1] == a and cap[2] == '4' and cap[3]==nil)
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assert(4^a == 4)
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assert(cap[0] == "pow" and cap[1] == 4 and cap[2] == a and cap[3]==nil)
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assert('4'^a == '4')
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assert(cap[0] == "pow" and cap[1] == '4' and cap[2] == a and cap[3]==nil)
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t = {}
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t.__lt = function (a,b,c)
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collectgarbage()
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assert(c == nil)
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if type(a) == 'table' then a = a.x end
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if type(b) == 'table' then b = b.x end
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return a<b, "dummy"
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end
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function Op(x) return setmetatable({x=x}, t) end
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local function test ()
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assert(not(Op(1)<Op(1)) and (Op(1)<Op(2)) and not(Op(2)<Op(1)))
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assert(not(Op('a')<Op('a')) and (Op('a')<Op('b')) and not(Op('b')<Op('a')))
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assert((Op(1)<=Op(1)) and (Op(1)<=Op(2)) and not(Op(2)<=Op(1)))
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assert((Op('a')<=Op('a')) and (Op('a')<=Op('b')) and not(Op('b')<=Op('a')))
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assert(not(Op(1)>Op(1)) and not(Op(1)>Op(2)) and (Op(2)>Op(1)))
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assert(not(Op('a')>Op('a')) and not(Op('a')>Op('b')) and (Op('b')>Op('a')))
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assert((Op(1)>=Op(1)) and not(Op(1)>=Op(2)) and (Op(2)>=Op(1)))
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assert((Op('a')>=Op('a')) and not(Op('a')>=Op('b')) and (Op('b')>=Op('a')))
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end
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test()
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t.__le = function (a,b,c)
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assert(c == nil)
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if type(a) == 'table' then a = a.x end
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if type(b) == 'table' then b = b.x end
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return a<=b, "dummy"
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end
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test() -- retest comparisons, now using both `lt' and `le'
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-- test `partial order'
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local function Set(x)
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local y = {}
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for _,k in pairs(x) do y[k] = 1 end
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return setmetatable(y, t)
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end
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t.__lt = function (a,b)
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for k in pairs(a) do
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if not b[k] then return false end
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b[k] = nil
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end
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return next(b) ~= nil
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end
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t.__le = nil
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assert(Set{1,2,3} < Set{1,2,3,4})
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assert(not(Set{1,2,3,4} < Set{1,2,3,4}))
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assert((Set{1,2,3,4} <= Set{1,2,3,4}))
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assert((Set{1,2,3,4} >= Set{1,2,3,4}))
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assert((Set{1,3} <= Set{3,5})) -- wrong!! model needs a `le' method ;-)
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t.__le = function (a,b)
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for k in pairs(a) do
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if not b[k] then return false end
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end
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return true
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end
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assert(not (Set{1,3} <= Set{3,5})) -- now its OK!
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assert(not(Set{1,3} <= Set{3,5}))
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assert(not(Set{1,3} >= Set{3,5}))
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t.__eq = function (a,b)
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for k in pairs(a) do
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if not b[k] then return false end
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b[k] = nil
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end
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return next(b) == nil
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end
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local s = Set{1,3,5}
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assert(s == Set{3,5,1})
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assert(not rawequal(s, Set{3,5,1}))
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assert(rawequal(s, s))
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assert(Set{1,3,5,1} == Set{3,5,1})
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assert(Set{1,3,5} ~= Set{3,5,1,6})
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t[Set{1,3,5}] = 1
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assert(t[Set{1,3,5}] == nil) -- `__eq' is not valid for table accesses
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t.__concat = function (a,b,c)
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assert(c == nil)
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if type(a) == 'table' then a = a.val end
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if type(b) == 'table' then b = b.val end
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if A then return a..b
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else
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return setmetatable({val=a..b}, t)
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end
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end
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c = {val="c"}; setmetatable(c, t)
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d = {val="d"}; setmetatable(d, t)
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A = true
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assert(c..d == 'cd')
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assert(0 .."a".."b"..c..d.."e".."f"..(5+3).."g" == "0abcdef8g")
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A = false
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x = c..d
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assert(getmetatable(x) == t and x.val == 'cd')
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x = 0 .."a".."b"..c..d.."e".."f".."g"
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assert(x.val == "0abcdefg")
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-- test comparison compatibilities
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local t1, t2, c, d
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t1 = {}; c = {}; setmetatable(c, t1)
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d = {}
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t1.__eq = function () return true end
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t1.__lt = function () return true end
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assert(c ~= d and not pcall(function () return c < d end))
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setmetatable(d, t1)
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assert(c == d and c < d and not(d <= c))
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t2 = {}
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t2.__eq = t1.__eq
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t2.__lt = t1.__lt
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setmetatable(d, t2)
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assert(c == d and c < d and not(d <= c))
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-- test for several levels of calls
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local i
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local tt = {
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__call = function (t, ...)
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i = i+1
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if t.f then return t.f(...)
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else return {...}
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end
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end
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}
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local a = setmetatable({}, tt)
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local b = setmetatable({f=a}, tt)
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local c = setmetatable({f=b}, tt)
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i = 0
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x = c(3,4,5)
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assert(i == 3 and x[1] == 3 and x[3] == 5)
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print'+'
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-- testing proxies
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assert(getmetatable(newproxy()) == nil)
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assert(getmetatable(newproxy(false)) == nil)
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assert(getmetatable(newproxy(nil)) == nil)
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local u = newproxy(true)
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getmetatable(u).__newindex = function (u,k,v)
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getmetatable(u)[k] = v
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end
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getmetatable(u).__index = function (u,k)
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return getmetatable(u)[k]
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end
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for i=1,10 do u[i] = i end
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for i=1,10 do assert(u[i] == i) end
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-- local k = newproxy(u)
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-- assert(getmetatable(k) == getmetatable(u))
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a = {}
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rawset(a, "x", 1, 2, 3)
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assert(a.x == 1 and rawget(a, "x", 3) == 1)
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print '+'
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--[[
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-- testing metatables for basic types
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mt = {}
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debug.setmetatable(10, mt)
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assert(getmetatable(-2) == mt)
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mt.__index = function (a,b) return a+b end
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assert((10)[3] == 13)
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assert((10)["3"] == 13)
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debug.setmetatable(23, nil)
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assert(getmetatable(-2) == nil)
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debug.setmetatable(true, mt)
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assert(getmetatable(false) == mt)
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mt.__index = function (a,b) return a or b end
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assert((true)[false] == true)
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assert((false)[false] == false)
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debug.setmetatable(false, nil)
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assert(getmetatable(true) == nil)
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debug.setmetatable(nil, mt)
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assert(getmetatable(nil) == mt)
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mt.__add = function (a,b) return (a or 0) + (b or 0) end
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assert(10 + nil == 10)
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assert(nil + 23 == 23)
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assert(nil + nil == 0)
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debug.setmetatable(nil, nil)
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assert(getmetatable(nil) == nil)
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debug.setmetatable(nil, {})
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]]--
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do
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-- == must not do ref equality for tables and userdata in presence of __eq
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local t = {}
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local u = newproxy(true)
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-- print() returns nil which is converted to false
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setmetatable(t, { __eq = print })
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getmetatable(u).__eq = print
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assert(t ~= t)
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assert(u ~= u)
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end
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do
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-- verify that internal mt flags are set correctly after two table assignments
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local mt = {
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{}, -- mixed metatable
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__index = {X = true},
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}
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local t = setmetatable({}, mt)
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assert(t.X) -- fails if table flags are set incorrectly
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end
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do
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-- verify __len behavior & error handling
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local t = {1}
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setmetatable(t, {})
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assert(#t == 1)
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setmetatable(t, { __len = rawlen })
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assert(#t == 1)
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setmetatable(t, { __len = function() return 42 end })
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assert(#t == 42)
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setmetatable(t, { __len = 42 })
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local ok, err = pcall(function() return #t end)
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assert(not ok and err:match("attempt to call a number value"))
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setmetatable(t, { __len = function() end })
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local ok, err = pcall(function() return #t end)
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assert(not ok and err:match("'__len' must return a number"))
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setmetatable(t, { __len = error })
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local ok, err = pcall(function() return #t end)
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assert(not ok and err == t)
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end
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-- verify rawlen behavior
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do
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local t = {1}
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setmetatable(t, { __len = 42 })
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assert(rawlen(t) == 1)
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assert(rawlen("foo") == 3)
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local ok, err = pcall(function() return rawlen(42) end)
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assert(not ok and err:match("table or string expected"))
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end
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-- verify that NaN/nil keys are passed to __newindex even though table assignment with them anywhere in the chain fails
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do
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assert(pcall(function() local t = {} t[nil] = 5 end) == false)
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assert(pcall(function() local t = {} setmetatable(t, { __newindex = {} }) t[nil] = 5 end) == false)
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assert(pcall(function() local t = {} setmetatable(t, { __newindex = function() end }) t[nil] = 5 end) == true)
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assert(pcall(function() local t = {} t[0/0] = 5 end) == false)
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assert(pcall(function() local t = {} setmetatable(t, { __newindex = {} }) t[0/0] = 5 end) == false)
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assert(pcall(function() local t = {} setmetatable(t, { __newindex = function() end }) t[0/0] = 5 end) == true)
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end
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-- verify that __newindex gets called for frozen tables but only if the assignment is to a key absent from the table
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do
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local ni = {}
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local t = table.create(2)
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t[1] = 42
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-- t[2] is semantically absent with storage allocated for it
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t.a = 1
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t.b = 2
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t.b = nil -- this sets 'b' value to nil but leaves key as is to exercise more internal paths -- no observable behavior change expected between b and other absent keys
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setmetatable(t, { __newindex = function(_, k, v)
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assert(v == 42)
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table.insert(ni, k)
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end })
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table.freeze(t)
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-- "redundant" combinations are there to test all three of SETTABLEN/SETTABLEKS/SETTABLE
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assert(pcall(function() t.a = 42 end) == false)
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assert(pcall(function() t[1] = 42 end) == false)
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assert(pcall(function() local key key = "a" t[key] = 42 end) == false)
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assert(pcall(function() local key key = 1 t[key] = 42 end) == false)
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-- now repeat the same for keys absent from the table: b (semantically absent), c (physically absent), 2 (semantically absent), 3 (physically absent)
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assert(pcall(function() t.b = 42 end) == true)
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assert(pcall(function() t.c = 42 end) == true)
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assert(pcall(function() local key key = "b" t[key] = 42 end) == true)
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assert(pcall(function() local key key = "c" t[key] = 42 end) == true)
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assert(pcall(function() t[2] = 42 end) == true)
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assert(pcall(function() t[3] = 42 end) == true)
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assert(pcall(function() local key key = 2 t[key] = 42 end) == true)
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assert(pcall(function() local key key = 3 t[key] = 42 end) == true)
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-- validate the assignment sequence
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local ei = { "b", "c", "b", "c", 2, 3, 2, 3 }
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|
assert(#ni == #ei)
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|
for k,v in ni do
|
|
assert(ei[k] == v)
|
|
end
|
|
end
|
|
|
|
function testfenv()
|
|
X = 20; B = 30
|
|
|
|
local _G = getfenv()
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|
setfenv(1, setmetatable({}, {__index=_G}))
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|
|
|
X = X+10
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|
assert(X == 30 and _G.X == 20)
|
|
B = false
|
|
assert(B == false)
|
|
B = nil
|
|
assert(B == 30)
|
|
|
|
assert(_G.X == 20)
|
|
assert(_G == getfenv(0))
|
|
end
|
|
|
|
testfenv() -- DONT MOVE THIS LINE
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|
|
|
return 'OK'
|