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# testing special comment on first line
-- $Id: testes/main.lua $
-- See Copyright Notice in file lua.h
-- most (all?) tests here assume a reasonable "Unix-like" shell
if _port then return end
-- use only "double quotes" inside shell scripts (better change to
-- run on Windows)
print ("testing stand-alone interpreter")
assert(os.execute()) -- machine has a system command
local arg = arg or ARG
local prog = os.tmpname()
local otherprog = os.tmpname()
local out = os.tmpname()
local progname
do
local i = 0
while arg[i] do i=i-1 end
progname = arg[i+1]
end
print("progname: "..progname)
local prepfile = function (s, mod, p)
mod = mod and "wb" or "w" -- mod true means binary files
p = p or prog -- file to write the program
local f = io.open(p, mod)
f:write(s)
assert(f:close())
end
local function getoutput ()
local f = io.open(out)
local t = f:read("a")
f:close()
assert(os.remove(out))
return t
end
local function checkprogout (s)
-- expected result must end with new line
assert(string.sub(s, -1) == "\n")
local t = getoutput()
for line in string.gmatch(s, ".-\n") do
assert(string.find(t, line, 1, true))
end
end
local function checkout (s)
local t = getoutput()
if s ~= t then print(string.format("'%s' - '%s'\n", s, t)) end
assert(s == t)
return t
end
local function RUN (p, ...)
p = string.gsub(p, "lua", '"'..progname..'"', 1)
local s = string.format(p, ...)
assert(os.execute(s))
end
local function NoRun (msg, p, ...)
p = string.gsub(p, "lua", '"'..progname..'"', 1)
local s = string.format(p, ...)
s = string.format("%s >%s 2>&1", s, out) -- send output and error to 'out'
assert(not os.execute(s))
assert(string.find(getoutput(), msg, 1, true)) -- check error message
end
RUN('lua -v')
RUN('lua -v > %s', out)
local release = string.match(getoutput(), "Lua (%d+%.%d+%.%d+)")
print(string.format("(temporary program file used in these tests: %s)", prog))
-- running stdin as a file
prepfile""
RUN('lua - < %s > %s', prog, out)
checkout("")
prepfile[[
print(
1, a
)
]]
RUN('lua - -- < %s > %s', prog, out)
checkout("1\tnil\n")
RUN('echo "print(10)\nprint(2)\n" | lua > %s', out)
checkout("10\n2\n")
-- testing BOM
prepfile("\xEF\xBB\xBF")
RUN('lua %s > %s', prog, out)
checkout("")
prepfile("\xEF\xBB\xBFprint(3)")
RUN('lua %s > %s', prog, out)
checkout("3\n")
prepfile("\xEF\xBB\xBF# comment!!\nprint(3)")
RUN('lua %s > %s', prog, out)
checkout("3\n")
-- bad BOMs
prepfile("\xEF", true)
NoRun("unexpected symbol", 'lua %s', prog)
prepfile("\xEF\xBB", true)
NoRun("unexpected symbol", 'lua %s', prog)
prepfile("\xEFprint(3)", true)
NoRun("unexpected symbol", 'lua %s', prog)
prepfile("\xEF\xBBprint(3)", true)
NoRun("unexpected symbol", 'lua %s', prog)
-- test option '-'
RUN('echo "print(arg[1])" | lua - -h > %s', out)
checkout("-h\n")
-- test environment variables used by Lua
prepfile("print(package.path)")
-- test LUA_PATH
RUN('env LUA_INIT= LUA_PATH=x lua -- %s > %s', prog, out)
checkout("x\n")
-- test LUA_PATH_version
RUN('env LUA_INIT= LUA_PATH_5_5=y LUA_PATH=x lua %s > %s', prog, out)
checkout("y\n")
-- test LUA_CPATH
prepfile("print(package.cpath)")
RUN('env LUA_INIT= LUA_CPATH=xuxu lua %s > %s', prog, out)
checkout("xuxu\n")
-- test LUA_CPATH_version
RUN('env LUA_INIT= LUA_CPATH_5_5=yacc LUA_CPATH=x lua %s > %s', prog, out)
checkout("yacc\n")
-- test LUA_INIT (and its access to 'arg' table)
prepfile("print(X)")
RUN('env LUA_INIT="X=tonumber(arg[1])" lua %s 3.2 > %s', prog, out)
checkout("3.2\n")
-- test LUA_INIT_version
prepfile("print(X)")
RUN('env LUA_INIT_5_5="X=10" LUA_INIT="X=3" lua %s > %s', prog, out)
checkout("10\n")
-- test LUA_INIT for files
prepfile("x = x or 10; print(x); x = x + 1")
RUN('env LUA_INIT="@%s" lua %s > %s', prog, prog, out)
checkout("10\n11\n")
-- test errors in LUA_INIT
NoRun('LUA_INIT:1: msg', 'env LUA_INIT="error(\'msg\')" lua')
print("testing option '-E'")
local defaultpath, defaultCpath
do
prepfile("print(package.path, package.cpath)")
RUN('env LUA_INIT="error(10)" LUA_PATH=xxx LUA_CPATH=xxx lua -E %s > %s',
prog, out)
local output = getoutput()
defaultpath = string.match(output, "^(.-)\t")
defaultCpath = string.match(output, "\t(.-)$")
-- running with an empty environment
RUN('env -i lua %s > %s', prog, out)
local out = getoutput()
assert(defaultpath == string.match(output, "^(.-)\t"))
assert(defaultCpath == string.match(output, "\t(.-)$"))
end
-- paths did not change
assert(not string.find(defaultpath, "xxx") and
string.find(defaultpath, "lua") and
not string.find(defaultCpath, "xxx") and
string.find(defaultCpath, "lua"))
-- (LUA_READLINELIB was introduced in 5.5.1)
if release >= "5.5.1" then
-- OBS: this test is not valid when Lua is compiled with LUA_USE_READLINE
print"testing readline library name"
-- should generate a warning when trying to load inexistent library "xuxu"
local env = [[LUA_READLINELIB=xuxu LUA_INIT="warn('@allow')"]]
local code = 'echo " " | env %s lua %s -W -i >%s 2>&1'
RUN(code, env, "", out) -- run code with no extra options
if(not string.find(getoutput(),
"warning: unable to load readline library 'xuxu'")) then
error("Is Lua compiled with option LUA_USE_READLINE?")
end
RUN(code, env, "-E", out) -- run again with option -E
-- no warning when LUA_READLINELIB is to be ignored
assert(not string.find(getoutput(), "warning"))
end
-- test replacement of ';;' to default path
local function convert (p)
prepfile("print(package.path)")
RUN('env LUA_PATH="%s" lua %s > %s', p, prog, out)
local expected = getoutput()
expected = string.sub(expected, 1, -2) -- cut final end of line
if string.find(p, ";;") then
p = string.gsub(p, ";;", ";"..defaultpath..";")
p = string.gsub(p, "^;", "") -- remove ';' at the beginning
p = string.gsub(p, ";$", "") -- remove ';' at the end
end
assert(p == expected)
end
convert(";")
convert(";;")
convert("a;;b")
convert(";;b")
convert("a;;")
convert("a;b;;c")
-- test -l over multiple libraries
prepfile("print(1); a=2; return {x=15}")
prepfile(("print(a); print(_G['%s'].x)"):format(prog), false, otherprog)
RUN('env LUA_PATH="?;;" lua -l %s -l%s -lstring -l io %s > %s', prog, otherprog, otherprog, out)
checkout("1\n2\n15\n2\n15\n")
-- test explicit global names in -l
prepfile("print(str.upper'alo alo', m.max(10, 20))")
RUN("lua -l 'str=string' '-lm=math' -e 'print(m.sin(0))' %s > %s", prog, out)
checkout("0.0\nALO ALO\t20\n")
-- test module names with version suffix ("libs/lib2-v2")
RUN("env LUA_CPATH='./libs/?.so' lua -l lib2-v2 -e 'print(lib2.id())' > %s",
out)
checkout("true\n")
-- test 'arg' table
local a = [[
assert(#arg == 3 and arg[1] == 'a' and
arg[2] == 'b' and arg[3] == 'c')
assert(arg[-1] == '--' and arg[-2] == "-e " and arg[-3] == '%s')
assert(arg[4] == undef and arg[-4] == undef)
local a, b, c = ...
assert(... == 'a' and a == 'a' and b == 'b' and c == 'c')
]]
a = string.format(a, progname)
prepfile(a)
RUN('lua "-e " -- %s a b c', prog) -- "-e " runs an empty command
-- test 'arg' availability in libraries
prepfile"assert(arg)"
prepfile("assert(arg)", false, otherprog)
RUN('env LUA_PATH="?;;" lua -l%s - < %s', prog, otherprog)
-- test messing up the 'arg' table
RUN('echo "print(...)" | lua -e "arg[1] = 100" - > %s', out)
checkout("100\n")
NoRun("'arg' is not a table", 'echo "" | lua -e "arg = 1" -')
-- test error in 'print'
RUN('echo 10 | lua -e "print=nil" -i > /dev/null 2> %s', out)
assert(string.find(getoutput(), "error calling 'print'"))
-- test 'debug.debug'
RUN('echo "io.stderr:write(1000)\ncont" | lua -e "require\'debug\'.debug()" 2> %s', out)
checkout("lua_debug> 1000lua_debug> ")
do -- test warning for locals
RUN('echo " local x" | lua -i > %s 2>&1', out)
assert(string.find(getoutput(), "warning: "))
RUN('echo "local1 = 10\nlocal1 + 3" | lua -i > %s 2>&1', out)
local t = getoutput()
assert(not string.find(t, "warning"))
assert(string.find(t, "13"))
end
print("testing warnings")
-- no warnings by default
RUN('echo "io.stderr:write(1); warn[[XXX]]" | lua 2> %s', out)
checkout("1")
prepfile[[
warn("@allow") -- unknown control, ignored
warn("@off", "XXX", "@off") -- these are not control messages
warn("@off") -- this one is
warn("@on", "YYY", "@on") -- not control, but warn is off
warn("@off") -- keep it off
warn("@on") -- restart warnings
warn("", "@on") -- again, no control, real warning
warn("@on") -- keep it "started"
warn("Z", "Z", "Z") -- common warning
]]
RUN('lua -W %s 2> %s', prog, out)
checkout[[
Lua warning: @offXXX@off
Lua warning: @on
Lua warning: ZZZ
]]
prepfile[[
warn("@allow")
-- create two objects to be finalized when closing state
-- the errors in the finalizers must generate warnings
u1 = setmetatable({}, {__gc = function () error("XYZ") end})
u2 = setmetatable({}, {__gc = function () error("ZYX") end})
]]
RUN('lua -W %s 2> %s', prog, out)
checkprogout("ZYX)\nXYZ)\n")
-- bug since 5.2: finalizer called when closing a state could
-- subvert finalization order
prepfile[[
-- ensure tables will be collected only at the end of the program
collectgarbage"stop"
print("creating 1")
-- this finalizer should be called last
setmetatable({}, {__gc = function () print(1) end})
print("creating 2")
setmetatable({}, {__gc = function ()
print("2")
print("creating 3")
-- this finalizer should not be called, as object will be
-- created after 'lua_close' has been called
setmetatable({}, {__gc = function () print(3) end})
print(collectgarbage() or false) -- cannot call collector here
os.exit(0, true)
end})
]]
RUN('lua -W %s > %s', prog, out)
checkout[[
creating 1
creating 2
2
creating 3
false
1
]]
-- test many arguments
prepfile[[print(({...})[30])]]
RUN('lua %s %s > %s', prog, string.rep(" a", 30), out)
checkout("a\n")
RUN([[lua "-eprint(1)" -ea=3 -e "print(a)" > %s]], out)
checkout("1\n3\n")
-- test interactive mode
prepfile[[
(6*2-6) -- ===
a =
10
print(a)
a]]
RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i < %s > %s]], prog, out)
checkprogout("6\n10\n10\n\n")
prepfile("a = [[b\nc\nd\ne]]\na")
RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i -- < %s > %s]], prog, out)
checkprogout("b\nc\nd\ne\n\n")
-- input interrupted in continuation line
prepfile("a.\n")
RUN([[lua -i < %s > /dev/null 2> %s]], prog, out)
checkprogout("near <eof>\n")
local prompt = "alo"
prepfile[[ --
a = 2
]]
RUN([[lua "-e_PROMPT='%s'" -i < %s > %s]], prompt, prog, out)
local t = getoutput()
assert(string.find(t, prompt .. ".*" .. prompt .. ".*" .. prompt))
-- using the prompt default
prepfile[[ --
a = 2
]]
RUN([[lua -i < %s > %s]], prog, out)
local t = getoutput()
prompt = "> " -- the default
assert(string.find(t, prompt .. ".*" .. prompt .. ".*" .. prompt))
-- non-string prompt
prompt = [[
local C = 'X';
_PROMPT=setmetatable({},{__tostring = function ()
C = C .. 'X'; return C end})
]]
prepfile[[ --
a = 2
]]
RUN([[lua -e "%s" -i < %s > %s]], prompt, prog, out)
local t = getoutput()
-- skip version line and then check the presence of the three prompts
assert(string.find(t, "^.-\nXX[^\nX]*\n?XXX[^\nX]*\n?XXXX\n?$"))
-- test for error objects
prepfile[[
debug = require "debug"
m = {x=0}
setmetatable(m, {__tostring = function(x)
return tostring(debug.getinfo(4).currentline + x.x)
end})
error(m)
]]
NoRun(progname .. ": 6\n", [[lua %s]], prog)
prepfile("error{}")
NoRun("error object is a table value", [[lua %s]], prog)
-- chunk broken in many lines
local s = [=[ --
function f ( x )
local a = [[
xuxu
]]
local b = "\
xuxu\n"
if x == 11 then return 1 + 12 , 2 + 20 end --[[ test multiple returns ]]
return x + 1
--\\
end
return( f( 100 ) )
assert( a == b )
do return f( 11 ) end ]=]
s = string.gsub(s, ' ', '\n\n') -- change all spaces for newlines
prepfile(s)
RUN([[lua -e"_PROMPT='' _PROMPT2=''" -i < %s > %s]], prog, out)
checkprogout("101\n13\t22\n\n")
prepfile[[#comment in 1st line without \n at the end]]
RUN('lua %s', prog)
-- first-line comment with binary file
prepfile("#comment\n" .. string.dump(load("print(3)")), true)
RUN('lua %s > %s', prog, out)
checkout('3\n')
-- close Lua with an open file
prepfile(string.format([[io.output(%q); io.write('alo')]], out))
RUN('lua %s', prog)
checkout('alo')
-- bug in 5.2 beta (extra \0 after version line)
RUN([[lua -v -e"print'hello'" > %s]], out)
t = getoutput()
assert(string.find(t, "PUC%-Rio\nhello"))
-- testing os.exit
prepfile("os.exit(nil, true)")
RUN('lua %s', prog)
prepfile("os.exit(0, true)")
RUN('lua %s', prog)
prepfile("os.exit(true, true)")
RUN('lua %s', prog)
prepfile("os.exit(1, true)")
NoRun("", "lua %s", prog) -- no message
prepfile("os.exit(false, true)")
NoRun("", "lua %s", prog) -- no message
-- to-be-closed variables in main chunk
prepfile[[
local x <close> = setmetatable({},
{__close = function (self, err)
assert(err == nil)
print("Ok")
end})
local e1 <close> = setmetatable({}, {__close = function () print(120) end})
os.exit(true, true)
]]
RUN('lua %s > %s', prog, out)
checkprogout("120\nOk\n")
-- remove temporary files
assert(os.remove(prog))
assert(os.remove(otherprog))
assert(not os.remove(out))
-- invalid options
NoRun("unrecognized option '-h'", "lua -h")
NoRun("unrecognized option '---'", "lua ---")
NoRun("unrecognized option '-Ex'", "lua -Ex --")
NoRun("unrecognized option '-vv'", "lua -vv")
NoRun("unrecognized option '-iv'", "lua -iv")
NoRun("'-e' needs argument", "lua -e")
NoRun("syntax error", "lua -e a")
NoRun("'-l' needs argument", "lua -l")
NoRun("-i", "lua -- -i") -- handles -i as a script name
if T then -- test library?
print("testing 'not enough memory' to create a state")
NoRun("not enough memory", "env MEMLIMIT=100 lua")
-- testing 'warn'
warn("@store")
warn("@123", "456", "789")
assert(_WARN == "@123456789"); _WARN = false
warn("zip", "", " ", "zap")
assert(_WARN == "zip zap"); _WARN = false
warn("ZIP", "", " ", "ZAP")
assert(_WARN == "ZIP ZAP"); _WARN = false
warn("@normal")
end
do
-- 'warn' must get at least one argument
local st, msg = pcall(warn)
assert(string.find(msg, "string expected"))
-- 'warn' does not leave unfinished warning in case of errors
-- (message would appear in next warning)
st, msg = pcall(warn, "SHOULD NOT APPEAR", {})
assert(string.find(msg, "string expected"))
end
print('+')
print('testing Ctrl C')
do
-- interrupt a script
local function kill (pid)
return os.execute(string.format('kill -INT %s 2> /dev/null', pid))
end
-- function to run a script in background, returning its output file
-- descriptor and its pid
local function runback (luaprg)
-- shell script to run 'luaprg' in background and echo its pid
local shellprg = string.format('%s -e "%s" & echo $!', progname, luaprg)
local f = io.popen(shellprg, "r") -- run shell script
local pid = f:read() -- get pid for Lua script
print("(if test fails now, it may leave a Lua script running in \z
background, pid " .. pid .. ")")
return f, pid
end
-- Lua script that runs protected infinite loop and then prints '42'
local f, pid = runback[[
pcall(function () print(12); while true do end end); print(42)]]
-- wait until script is inside 'pcall'
assert(f:read() == "12")
kill(pid) -- send INT signal to Lua script
-- check that 'pcall' captured the exception and script continued running
assert(f:read() == "42") -- expected output
assert(f:close())
print("done")
-- Lua script in a long unbreakable search
local f, pid = runback[[
print(15); string.find(string.rep('a', 100000), '.*b')]]
-- wait (so script can reach the loop)
assert(f:read() == "15")
assert(os.execute("sleep 1"))
-- must send at least two INT signals to stop this Lua script
local n = 100
for i = 0, 100 do -- keep sending signals
if not kill(pid) then -- until it fails
n = i -- number of non-failed kills
break
end
end
assert(f:close())
assert(n >= 2)
print(string.format("done (with %d kills)", n))
end
print("OK")
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