mirror of
https://github.com/luau-lang/luau.git
synced 2024-12-12 21:10:37 +00:00
438 lines
9.2 KiB
Lua
438 lines
9.2 KiB
Lua
-- This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
|
|
-- This file is based on Lua 5.x tests -- https://github.com/lua/lua/tree/master/testes
|
|
print "testing closures and coroutines"
|
|
|
|
local unpack = table.unpack
|
|
|
|
local A,B = 0,{g=10}
|
|
function f(x)
|
|
local a = {}
|
|
for i=1,1000 do
|
|
local y = 0
|
|
do
|
|
a[i] = function () B.g = B.g+1; y = y+x; return y+A end
|
|
end
|
|
end
|
|
local dummy = function () return a[A] end
|
|
collectgarbage()
|
|
A = 1; assert(dummy() == a[1]); A = 0;
|
|
assert(a[1]() == x)
|
|
assert(a[3]() == x)
|
|
collectgarbage()
|
|
assert(B.g == 12)
|
|
return a
|
|
end
|
|
|
|
a = f(10)
|
|
-- force a GC in this level
|
|
local x = {[1] = {}} -- to detect a GC
|
|
setmetatable(x, {__mode = 'kv'})
|
|
while x[1] do -- repeat until GC
|
|
local a = A..A..A..A -- create garbage
|
|
A = A+1
|
|
end
|
|
assert(a[1]() == 20+A)
|
|
assert(a[1]() == 30+A)
|
|
assert(a[2]() == 10+A)
|
|
collectgarbage()
|
|
assert(a[2]() == 20+A)
|
|
assert(a[2]() == 30+A)
|
|
assert(a[3]() == 20+A)
|
|
assert(a[8]() == 10+A)
|
|
assert(getmetatable(x).__mode == 'kv')
|
|
assert(B.g == 19)
|
|
|
|
-- testing closures with 'for' control variable
|
|
a = {}
|
|
for i=1,10 do
|
|
a[i] = {set = function(x) i=x end, get = function () return i end}
|
|
if i == 3 then break end
|
|
end
|
|
assert(a[4] == nil)
|
|
a[1].set(10)
|
|
assert(a[2].get() == 2)
|
|
a[2].set('a')
|
|
assert(a[3].get() == 3)
|
|
assert(a[2].get() == 'a')
|
|
|
|
a = {}
|
|
for i, k in pairs{'a', 'b'} do
|
|
a[i] = {set = function(x, y) i=x; k=y end,
|
|
get = function () return i, k end}
|
|
if i == 2 then break end
|
|
end
|
|
a[1].set(10, 20)
|
|
local r,s = a[2].get()
|
|
assert(r == 2 and s == 'b')
|
|
r,s = a[1].get()
|
|
assert(r == 10 and s == 20)
|
|
a[2].set('a', 'b')
|
|
r,s = a[2].get()
|
|
assert(r == "a" and s == "b")
|
|
|
|
|
|
-- testing closures with 'for' control variable x break
|
|
for i=1,3 do
|
|
f = function () return i end
|
|
break
|
|
end
|
|
assert(f() == 1)
|
|
|
|
for k, v in pairs{"a", "b"} do
|
|
f = function () return k, v end
|
|
break
|
|
end
|
|
assert(({f()})[1] == 1)
|
|
assert(({f()})[2] == "a")
|
|
|
|
|
|
-- testing closure x break x return x errors
|
|
|
|
local b
|
|
function f(x)
|
|
local first = 1
|
|
while 1 do
|
|
if x == 3 and not first then return end
|
|
local a = 'xuxu'
|
|
b = function (op, y)
|
|
if op == 'set' then
|
|
a = x+y
|
|
else
|
|
return a
|
|
end
|
|
end
|
|
if x == 1 then do break end
|
|
elseif x == 2 then return
|
|
else if x ~= 3 then error() end
|
|
end
|
|
first = nil
|
|
end
|
|
end
|
|
|
|
for i=1,3 do
|
|
f(i)
|
|
assert(b('get') == 'xuxu')
|
|
b('set', 10); assert(b('get') == 10+i)
|
|
b = nil
|
|
end
|
|
|
|
pcall(f, 4);
|
|
assert(b('get') == 'xuxu')
|
|
b('set', 10); assert(b('get') == 14)
|
|
|
|
|
|
local w
|
|
-- testing multi-level closure
|
|
function f(x)
|
|
return function (y)
|
|
return function (z) return w+x+y+z end
|
|
end
|
|
end
|
|
|
|
y = f(10)
|
|
w = 1.345
|
|
assert(y(20)(30) == 60+w)
|
|
|
|
-- testing closures x repeat-until
|
|
|
|
local a = {}
|
|
local i = 1
|
|
repeat
|
|
local x = i
|
|
a[i] = function () i = x+1; return x end
|
|
until i > 10 or a[i]() ~= x
|
|
assert(i == 11 and a[1]() == 1 and a[3]() == 3 and i == 4)
|
|
|
|
print'+'
|
|
|
|
|
|
-- test for correctly closing upvalues in tail calls of vararg functions
|
|
local function t ()
|
|
local function c(a,b) assert(a=="test" and b=="OK") end
|
|
local function v(f, ...) c("test", f() ~= 1 and "FAILED" or "OK") end
|
|
local x = 1
|
|
return v(function() return x end)
|
|
end
|
|
t()
|
|
|
|
|
|
-- coroutine tests
|
|
|
|
local f
|
|
|
|
-- assert(coroutine.running() == nil)
|
|
|
|
|
|
-- tests for global environment
|
|
local _G = getfenv()
|
|
|
|
local function foo (a)
|
|
setfenv(0, a)
|
|
coroutine.yield(getfenv())
|
|
assert(getfenv(0) == a)
|
|
assert(getfenv(1) == _G)
|
|
assert(getfenv(loadstring"") == a)
|
|
return getfenv()
|
|
end
|
|
|
|
f = coroutine.wrap(foo)
|
|
local a = {}
|
|
assert(f(a) == _G)
|
|
local a,b = pcall(f)
|
|
assert(a and b == _G)
|
|
|
|
|
|
-- tests for multiple yield/resume arguments
|
|
|
|
local function eqtab (t1, t2)
|
|
assert(table.getn(t1) == table.getn(t2))
|
|
for i,v in ipairs(t1) do
|
|
assert(t2[i] == v)
|
|
end
|
|
end
|
|
|
|
_G.x = nil -- declare x
|
|
function foo (a, ...)
|
|
assert(coroutine.running() == f)
|
|
assert(coroutine.status(f) == "running")
|
|
local arg = {...}
|
|
for i=1,table.getn(arg) do
|
|
_G.x = {coroutine.yield(unpack(arg[i]))}
|
|
end
|
|
return unpack(a)
|
|
end
|
|
|
|
f = coroutine.create(foo)
|
|
assert(type(f) == "thread" and coroutine.status(f) == "suspended")
|
|
assert(string.find(tostring(f), "thread"))
|
|
local s,a,b,c,d
|
|
s,a,b,c,d = coroutine.resume(f, {1,2,3}, {}, {1}, {'a', 'b', 'c'})
|
|
assert(s and a == nil and coroutine.status(f) == "suspended")
|
|
s,a,b,c,d = coroutine.resume(f)
|
|
eqtab(_G.x, {})
|
|
assert(s and a == 1 and b == nil)
|
|
s,a,b,c,d = coroutine.resume(f, 1, 2, 3)
|
|
eqtab(_G.x, {1, 2, 3})
|
|
assert(s and a == 'a' and b == 'b' and c == 'c' and d == nil)
|
|
s,a,b,c,d = coroutine.resume(f, "xuxu")
|
|
eqtab(_G.x, {"xuxu"})
|
|
assert(s and a == 1 and b == 2 and c == 3 and d == nil)
|
|
assert(coroutine.status(f) == "dead")
|
|
s, a = coroutine.resume(f, "xuxu")
|
|
assert(not s and string.find(a, "dead") and coroutine.status(f) == "dead")
|
|
|
|
|
|
-- yields in tail calls
|
|
local function foo (i) return coroutine.yield(i) end
|
|
f = coroutine.wrap(function ()
|
|
for i=1,10 do
|
|
assert(foo(i) == _G.x)
|
|
end
|
|
return 'a'
|
|
end)
|
|
for i=1,10 do _G.x = i; assert(f(i) == i) end
|
|
_G.x = 'xuxu'; assert(f('xuxu') == 'a')
|
|
|
|
-- recursive
|
|
function pf (n, i)
|
|
coroutine.yield(n)
|
|
pf(n*i, i+1)
|
|
end
|
|
|
|
f = coroutine.wrap(pf)
|
|
local s=1
|
|
for i=1,10 do
|
|
assert(f(1, 1) == s)
|
|
s = s*i
|
|
end
|
|
|
|
-- sieve
|
|
function gen (n)
|
|
return coroutine.wrap(function ()
|
|
for i=2,n do coroutine.yield(i) end
|
|
end)
|
|
end
|
|
|
|
|
|
function filter (p, g)
|
|
return coroutine.wrap(function ()
|
|
while 1 do
|
|
local n = g()
|
|
if n == nil then return end
|
|
if n%p ~= 0 then coroutine.yield(n) end
|
|
end
|
|
end)
|
|
end
|
|
|
|
local x = gen(100)
|
|
local a = {}
|
|
while 1 do
|
|
local n = x()
|
|
if n == nil then break end
|
|
table.insert(a, n)
|
|
x = filter(n, x)
|
|
end
|
|
|
|
assert(table.getn(a) == 25 and a[table.getn(a)] == 97)
|
|
|
|
|
|
-- errors in coroutines
|
|
function foo ()
|
|
-- assert(debug.getinfo(1).currentline == debug.getinfo(foo).linedefined + 1)
|
|
-- assert(debug.getinfo(2).currentline == debug.getinfo(goo).linedefined)
|
|
coroutine.yield(3)
|
|
error("foo")
|
|
end
|
|
|
|
local fooerr = "closure.lua:284: foo"
|
|
|
|
function goo() foo() end
|
|
x = coroutine.wrap(goo)
|
|
assert(x() == 3)
|
|
local a,b = pcall(x)
|
|
assert(not a and b == fooerr)
|
|
|
|
x = coroutine.create(goo)
|
|
a,b = coroutine.resume(x)
|
|
assert(a and b == 3)
|
|
a,b = coroutine.resume(x)
|
|
assert(not a and b == fooerr and coroutine.status(x) == "dead")
|
|
a,b = coroutine.resume(x)
|
|
assert(not a and string.find(b, "dead") and coroutine.status(x) == "dead")
|
|
|
|
|
|
-- co-routines x for loop
|
|
function all (a, n, k)
|
|
if k == 0 then coroutine.yield(a)
|
|
else
|
|
for i=1,n do
|
|
a[k] = i
|
|
all(a, n, k-1)
|
|
end
|
|
end
|
|
end
|
|
|
|
local a = 0
|
|
for t in coroutine.wrap(function () all({}, 5, 4) end) do
|
|
a = a+1
|
|
end
|
|
assert(a == 5^4)
|
|
|
|
|
|
-- access to locals of collected coroutines
|
|
local C = {}; setmetatable(C, {__mode = "kv"})
|
|
local x = coroutine.wrap (function ()
|
|
local a = 10
|
|
local function f () a = a+10; return a end
|
|
while true do
|
|
a = a+1
|
|
coroutine.yield(f)
|
|
end
|
|
end)
|
|
|
|
C[1] = x;
|
|
|
|
local f = x()
|
|
assert(f() == 21 and x()() == 32 and x() == f)
|
|
x = nil
|
|
collectgarbage()
|
|
-- assert(C[1] == nil)
|
|
assert(f() == 43 and f() == 53)
|
|
|
|
|
|
-- old bug: attempt to resume itself
|
|
|
|
function co_func (current_co)
|
|
assert(coroutine.running() == current_co)
|
|
assert(coroutine.resume(current_co) == false)
|
|
assert(coroutine.resume(current_co) == false)
|
|
return 10
|
|
end
|
|
|
|
local co = coroutine.create(co_func)
|
|
local a,b = coroutine.resume(co, co)
|
|
assert(a == true and b == 10)
|
|
assert(coroutine.resume(co, co) == false)
|
|
assert(coroutine.resume(co, co) == false)
|
|
|
|
-- access to locals of erroneous coroutines
|
|
local x = coroutine.create (function ()
|
|
local a = 10
|
|
_G.f = function () a=a+1; return a end
|
|
error('x')
|
|
end)
|
|
|
|
assert(not coroutine.resume(x))
|
|
-- overwrite previous position of local `a'
|
|
assert(not coroutine.resume(x, 1, 1, 1, 1, 1, 1, 1))
|
|
assert(_G.f() == 11)
|
|
assert(_G.f() == 12)
|
|
|
|
|
|
if not T then
|
|
(Message or print)('\a\n >>> testC not active: skipping yield/hook tests <<<\n\a')
|
|
else
|
|
|
|
local turn
|
|
|
|
function fact (t, x)
|
|
assert(turn == t)
|
|
if x == 0 then return 1
|
|
else return x*fact(t, x-1)
|
|
end
|
|
end
|
|
|
|
local A,B,a,b = 0,0,0,0
|
|
|
|
local x = coroutine.create(function ()
|
|
T.setyhook("", 2)
|
|
A = fact("A", 10)
|
|
end)
|
|
|
|
local y = coroutine.create(function ()
|
|
T.setyhook("", 3)
|
|
B = fact("B", 11)
|
|
end)
|
|
|
|
while A==0 or B==0 do
|
|
if A==0 then turn = "A"; T.resume(x) end
|
|
if B==0 then turn = "B"; T.resume(y) end
|
|
end
|
|
|
|
assert(B/A == 11)
|
|
end
|
|
|
|
|
|
-- leaving a pending coroutine open
|
|
_X = coroutine.wrap(function ()
|
|
local a = 10
|
|
local x = function () a = a+1 end
|
|
coroutine.yield()
|
|
end)
|
|
|
|
_X()
|
|
|
|
|
|
-- coroutine environments
|
|
co = coroutine.create(function ()
|
|
coroutine.yield(getfenv(0))
|
|
return loadstring("return a")()
|
|
end)
|
|
|
|
-- large closure size
|
|
do
|
|
local a1, a2, a3, a4, a5, a6, a7, a8, a9, a0
|
|
local b1, b2, b3, b4, b5, b6, b7, b8, b9, b0
|
|
local c1, c2, c3, c4, c5, c6, c7, c8, c9, c0
|
|
local d1, d2, d3, d4, d5, d6, d7, d8, d9, d0
|
|
|
|
local f = function()
|
|
return
|
|
a1 + a2 + a3 + a4 + a5 + a6 + a7 + a8 + a9 + a0 +
|
|
b1 + b2 + b3 + b4 + b5 + b6 + b7 + b8 + b9 + b0 +
|
|
c1 + c2 + c3 + c4 + c5 + c6 + c7 + c8 + c9 + c0 +
|
|
d1 + d2 + d3 + d4 + d5 + d6 + d7 + d8 + d9 + d0
|
|
end
|
|
end
|
|
|
|
return 'OK'
|