862 lines
21 KiB
Lua
862 lines
21 KiB
Lua
-- $Id: db.lua,v 1.79 2016/11/07 13:02:34 roberto Exp $
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-- See Copyright Notice in file all.lua
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-- testing debug library
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local debug = require "debug"
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local function dostring(s) return assert(load(s))() end
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print"testing debug library and debug information"
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do
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local a=1
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end
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assert(not debug.gethook())
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local testline = 19 -- line where 'test' is defined
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function test (s, l, p) -- this must be line 19
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collectgarbage() -- avoid gc during trace
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local function f (event, line)
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assert(event == 'line')
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local l = table.remove(l, 1)
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if p then print(l, line) end
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assert(l == line, "wrong trace!!")
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end
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debug.sethook(f,"l"); load(s)(); debug.sethook()
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assert(#l == 0)
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end
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do
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assert(not pcall(debug.getinfo, print, "X")) -- invalid option
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assert(not debug.getinfo(1000)) -- out of range level
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assert(not debug.getinfo(-1)) -- out of range level
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local a = debug.getinfo(print)
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assert(a.what == "C" and a.short_src == "[C]")
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a = debug.getinfo(print, "L")
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assert(a.activelines == nil)
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local b = debug.getinfo(test, "SfL")
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assert(b.name == nil and b.what == "Lua" and b.linedefined == testline and
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b.lastlinedefined == b.linedefined + 10 and
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b.func == test and not string.find(b.short_src, "%["))
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assert(b.activelines[b.linedefined + 1] and
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b.activelines[b.lastlinedefined])
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assert(not b.activelines[b.linedefined] and
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not b.activelines[b.lastlinedefined + 1])
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end
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-- test file and string names truncation
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a = "function f () end"
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local function dostring (s, x) return load(s, x)() end
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dostring(a)
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assert(debug.getinfo(f).short_src == string.format('[string "%s"]', a))
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dostring(a..string.format("; %s\n=1", string.rep('p', 400)))
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assert(string.find(debug.getinfo(f).short_src, '^%[string [^\n]*%.%.%."%]$'))
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dostring(a..string.format("; %s=1", string.rep('p', 400)))
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assert(string.find(debug.getinfo(f).short_src, '^%[string [^\n]*%.%.%."%]$'))
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dostring("\n"..a)
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assert(debug.getinfo(f).short_src == '[string "..."]')
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dostring(a, "")
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assert(debug.getinfo(f).short_src == '[string ""]')
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dostring(a, "@xuxu")
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assert(debug.getinfo(f).short_src == "xuxu")
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dostring(a, "@"..string.rep('p', 1000)..'t')
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assert(string.find(debug.getinfo(f).short_src, "^%.%.%.p*t$"))
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dostring(a, "=xuxu")
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assert(debug.getinfo(f).short_src == "xuxu")
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dostring(a, string.format("=%s", string.rep('x', 500)))
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assert(string.find(debug.getinfo(f).short_src, "^x*$"))
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dostring(a, "=")
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assert(debug.getinfo(f).short_src == "")
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a = nil; f = nil;
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repeat
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local g = {x = function ()
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local a = debug.getinfo(2)
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assert(a.name == 'f' and a.namewhat == 'local')
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a = debug.getinfo(1)
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assert(a.name == 'x' and a.namewhat == 'field')
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return 'xixi'
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end}
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local f = function () return 1+1 and (not 1 or g.x()) end
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assert(f() == 'xixi')
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g = debug.getinfo(f)
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assert(g.what == "Lua" and g.func == f and g.namewhat == "" and not g.name)
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function f (x, name) -- local!
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name = name or 'f'
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local a = debug.getinfo(1)
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assert(a.name == name and a.namewhat == 'local')
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return x
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end
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-- breaks in different conditions
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if 3>4 then break end; f()
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if 3<4 then a=1 else break end; f()
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while 1 do local x=10; break end; f()
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local b = 1
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if 3>4 then return math.sin(1) end; f()
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a = 3<4; f()
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a = 3<4 or 1; f()
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repeat local x=20; if 4>3 then f() else break end; f() until 1
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g = {}
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f(g).x = f(2) and f(10)+f(9)
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assert(g.x == f(19))
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function g(x) if not x then return 3 end return (x('a', 'x')) end
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assert(g(f) == 'a')
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until 1
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test([[if
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math.sin(1)
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then
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a=1
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else
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a=2
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end
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]], {2,3,4,7})
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test([[--
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if nil then
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a=1
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else
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a=2
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end
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]], {2,5,6})
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test([[a=1
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repeat
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a=a+1
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until a==3
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]], {1,3,4,3,4})
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test([[ do
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return
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end
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]], {2})
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test([[local a
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a=1
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while a<=3 do
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a=a+1
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end
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]], {1,2,3,4,3,4,3,4,3,5})
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test([[while math.sin(1) do
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if math.sin(1)
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then break
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end
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end
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a=1]], {1,2,3,6})
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test([[for i=1,3 do
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a=i
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end
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]], {1,2,1,2,1,2,1,3})
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test([[for i,v in pairs{'a','b'} do
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a=tostring(i) .. v
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end
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]], {1,2,1,2,1,3})
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test([[for i=1,4 do a=1 end]], {1,1,1,1,1})
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print'+'
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-- invalid levels in [gs]etlocal
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assert(not pcall(debug.getlocal, 20, 1))
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assert(not pcall(debug.setlocal, -1, 1, 10))
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-- parameter names
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local function foo (a,b,...) local d, e end
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local co = coroutine.create(foo)
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assert(debug.getlocal(foo, 1) == 'a')
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assert(debug.getlocal(foo, 2) == 'b')
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assert(not debug.getlocal(foo, 3))
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assert(debug.getlocal(co, foo, 1) == 'a')
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assert(debug.getlocal(co, foo, 2) == 'b')
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assert(not debug.getlocal(co, foo, 3))
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assert(not debug.getlocal(print, 1))
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-- varargs
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local function foo (a, ...)
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local t = table.pack(...)
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for i = 1, t.n do
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local n, v = debug.getlocal(1, -i)
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assert(n == "(*vararg)" and v == t[i])
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end
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assert(not debug.getlocal(1, -(t.n + 1)))
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assert(not debug.setlocal(1, -(t.n + 1), 30))
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if t.n > 0 then
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(function (x)
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assert(debug.setlocal(2, -1, x) == "(*vararg)")
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assert(debug.setlocal(2, -t.n, x) == "(*vararg)")
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end)(430)
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assert(... == 430)
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end
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end
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foo()
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foo(print)
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foo(200, 3, 4)
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local a = {}
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for i = 1, (_soft and 100 or 1000) do a[i] = i end
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foo(table.unpack(a))
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a = nil
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-- access to vararg in non-vararg function
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local function foo () return debug.getlocal(1, -1) end
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assert(not foo(10))
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do -- test hook presence in debug info
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assert(not debug.gethook())
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local count = 0
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local function f ()
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assert(debug.getinfo(1).namewhat == "hook")
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local sndline = string.match(debug.traceback(), "\n(.-)\n")
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assert(string.find(sndline, "hook"))
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count = count + 1
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end
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debug.sethook(f, "l")
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local a = 0
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_ENV.a = a
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a = 1
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debug.sethook()
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assert(count == 4)
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end
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a = {}; L = nil
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local glob = 1
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local oldglob = glob
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debug.sethook(function (e,l)
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collectgarbage() -- force GC during a hook
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local f, m, c = debug.gethook()
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assert(m == 'crl' and c == 0)
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if e == "line" then
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if glob ~= oldglob then
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L = l-1 -- get the first line where "glob" has changed
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oldglob = glob
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end
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elseif e == "call" then
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local f = debug.getinfo(2, "f").func
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a[f] = 1
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else assert(e == "return")
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end
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end, "crl")
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function f(a,b)
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collectgarbage()
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local _, x = debug.getlocal(1, 1)
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local _, y = debug.getlocal(1, 2)
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assert(x == a and y == b)
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assert(debug.setlocal(2, 3, "pera") == "AA".."AA")
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assert(debug.setlocal(2, 4, "ma<EFBFBD><EFBFBD>") == "B")
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x = debug.getinfo(2)
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assert(x.func == g and x.what == "Lua" and x.name == 'g' and
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x.nups == 2 and string.find(x.source, "^@.*db%.lua$"))
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glob = glob+1
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assert(debug.getinfo(1, "l").currentline == L+1)
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assert(debug.getinfo(1, "l").currentline == L+2)
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end
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function foo()
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glob = glob+1
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assert(debug.getinfo(1, "l").currentline == L+1)
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end; foo() -- set L
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-- check line counting inside strings and empty lines
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_ = 'alo\
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alo' .. [[
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]]
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--[[
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]]
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assert(debug.getinfo(1, "l").currentline == L+11) -- check count of lines
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function g(...)
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local arg = {...}
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do local a,b,c; a=math.sin(40); end
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local feijao
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local AAAA,B = "xuxu", "mam<EFBFBD>o"
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f(AAAA,B)
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assert(AAAA == "pera" and B == "ma<EFBFBD><EFBFBD>")
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do
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local B = 13
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local x,y = debug.getlocal(1,5)
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assert(x == 'B' and y == 13)
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end
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end
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g()
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assert(a[f] and a[g] and a[assert] and a[debug.getlocal] and not a[print])
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-- tests for manipulating non-registered locals (C and Lua temporaries)
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local n, v = debug.getlocal(0, 1)
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assert(v == 0 and n == "(*temporary)")
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local n, v = debug.getlocal(0, 2)
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assert(v == 2 and n == "(*temporary)")
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assert(not debug.getlocal(0, 3))
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assert(not debug.getlocal(0, 0))
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function f()
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assert(select(2, debug.getlocal(2,3)) == 1)
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assert(not debug.getlocal(2,4))
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debug.setlocal(2, 3, 10)
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return 20
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end
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function g(a,b) return (a+1) + f() end
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assert(g(0,0) == 30)
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debug.sethook(nil);
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assert(debug.gethook() == nil)
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-- testing access to function arguments
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local function collectlocals (level)
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local tab = {}
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for i = 1, math.huge do
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local n, v = debug.getlocal(level + 1, i)
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if not (n and string.find(n, "^[a-zA-Z0-9_]+$")) then
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break -- consider only real variables
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end
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tab[n] = v
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end
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return tab
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end
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X = nil
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a = {}
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function a:f (a, b, ...) local arg = {...}; local c = 13 end
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debug.sethook(function (e)
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assert(e == "call")
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dostring("XX = 12") -- test dostring inside hooks
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-- testing errors inside hooks
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assert(not pcall(load("a='joao'+1")))
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debug.sethook(function (e, l)
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assert(debug.getinfo(2, "l").currentline == l)
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local f,m,c = debug.gethook()
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assert(e == "line")
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assert(m == 'l' and c == 0)
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debug.sethook(nil) -- hook is called only once
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assert(not X) -- check that
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X = collectlocals(2)
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end, "l")
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end, "c")
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a:f(1,2,3,4,5)
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assert(X.self == a and X.a == 1 and X.b == 2 and X.c == nil)
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assert(XX == 12)
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assert(debug.gethook() == nil)
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-- testing access to local variables in return hook (bug in 5.2)
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do
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local function foo (a, b)
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do local x,y,z end
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local c, d = 10, 20
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return
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end
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local function aux ()
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if debug.getinfo(2).name == "foo" then
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foo = nil -- to signal that it found 'foo'
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local tab = {a = 100, b = 200, c = 10, d = 20}
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for n, v in pairs(collectlocals(2)) do
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assert(tab[n] == v)
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tab[n] = nil
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end
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assert(next(tab) == nil) -- 'tab' must be empty
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end
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end
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debug.sethook(aux, "r"); foo(100, 200); debug.sethook()
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assert(foo == nil)
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end
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-- testing upvalue access
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local function getupvalues (f)
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local t = {}
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local i = 1
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while true do
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local name, value = debug.getupvalue(f, i)
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if not name then break end
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assert(not t[name])
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t[name] = value
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i = i + 1
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end
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return t
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end
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local a,b,c = 1,2,3
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local function foo1 (a) b = a; return c end
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local function foo2 (x) a = x; return c+b end
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assert(not debug.getupvalue(foo1, 3))
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assert(not debug.getupvalue(foo1, 0))
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assert(not debug.setupvalue(foo1, 3, "xuxu"))
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local t = getupvalues(foo1)
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assert(t.a == nil and t.b == 2 and t.c == 3)
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t = getupvalues(foo2)
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assert(t.a == 1 and t.b == 2 and t.c == 3)
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assert(debug.setupvalue(foo1, 1, "xuxu") == "b")
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assert(({debug.getupvalue(foo2, 3)})[2] == "xuxu")
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-- upvalues of C functions are allways "called" "" (the empty string)
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assert(debug.getupvalue(string.gmatch("x", "x"), 1) == "")
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-- testing count hooks
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local a=0
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debug.sethook(function (e) a=a+1 end, "", 1)
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a=0; for i=1,1000 do end; assert(1000 < a and a < 1012)
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debug.sethook(function (e) a=a+1 end, "", 4)
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a=0; for i=1,1000 do end; assert(250 < a and a < 255)
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local f,m,c = debug.gethook()
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assert(m == "" and c == 4)
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debug.sethook(function (e) a=a+1 end, "", 4000)
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a=0; for i=1,1000 do end; assert(a == 0)
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do
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debug.sethook(print, "", 2^24 - 1) -- count upperbound
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local f,m,c = debug.gethook()
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assert(({debug.gethook()})[3] == 2^24 - 1)
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end
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debug.sethook()
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-- tests for tail calls
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local function f (x)
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if x then
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assert(debug.getinfo(1, "S").what == "Lua")
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assert(debug.getinfo(1, "t").istailcall == true)
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local tail = debug.getinfo(2)
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assert(tail.func == g1 and tail.istailcall == true)
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assert(debug.getinfo(3, "S").what == "main")
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print"+"
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end
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end
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function g(x) return f(x) end
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function g1(x) g(x) end
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local function h (x) local f=g1; return f(x) end
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h(true)
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local b = {}
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debug.sethook(function (e) table.insert(b, e) end, "cr")
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h(false)
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debug.sethook()
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local res = {"return", -- first return (from sethook)
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"call", "tail call", "call", "tail call",
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"return", "return",
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"call", -- last call (to sethook)
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}
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for i = 1, #res do assert(res[i] == table.remove(b, 1)) end
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b = 0
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debug.sethook(function (e)
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if e == "tail call" then
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b = b + 1
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assert(debug.getinfo(2, "t").istailcall == true)
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else
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assert(debug.getinfo(2, "t").istailcall == false)
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end
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end, "c")
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h(false)
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debug.sethook()
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assert(b == 2) -- two tail calls
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lim = _soft and 3000 or 30000
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local function foo (x)
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if x==0 then
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assert(debug.getinfo(2).what == "main")
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local info = debug.getinfo(1)
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assert(info.istailcall == true and info.func == foo)
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else return foo(x-1)
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end
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end
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foo(lim)
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print"+"
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-- testing local function information
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co = load[[
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local A = function ()
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return x
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end
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return
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]]
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local a = 0
|
||
-- 'A' should be visible to debugger only after its complete definition
|
||
debug.sethook(function (e, l)
|
||
if l == 3 then a = a + 1; assert(debug.getlocal(2, 1) == "(*temporary)")
|
||
elseif l == 4 then a = a + 1; assert(debug.getlocal(2, 1) == "A")
|
||
end
|
||
end, "l")
|
||
co() -- run local function definition
|
||
debug.sethook() -- turn off hook
|
||
assert(a == 2) -- ensure all two lines where hooked
|
||
|
||
-- testing traceback
|
||
|
||
assert(debug.traceback(print) == print)
|
||
assert(debug.traceback(print, 4) == print)
|
||
assert(string.find(debug.traceback("hi", 4), "^hi\n"))
|
||
assert(string.find(debug.traceback("hi"), "^hi\n"))
|
||
assert(not string.find(debug.traceback("hi"), "'debug.traceback'"))
|
||
assert(string.find(debug.traceback("hi", 0), "'debug.traceback'"))
|
||
assert(string.find(debug.traceback(), "^stack traceback:\n"))
|
||
|
||
do -- C-function names in traceback
|
||
local st, msg = (function () return pcall end)()(debug.traceback)
|
||
assert(st == true and string.find(msg, "pcall"))
|
||
end
|
||
|
||
|
||
-- testing nparams, nups e isvararg
|
||
local t = debug.getinfo(print, "u")
|
||
assert(t.isvararg == true and t.nparams == 0 and t.nups == 0)
|
||
|
||
t = debug.getinfo(function (a,b,c) end, "u")
|
||
assert(t.isvararg == false and t.nparams == 3 and t.nups == 0)
|
||
|
||
t = debug.getinfo(function (a,b,...) return t[a] end, "u")
|
||
assert(t.isvararg == true and t.nparams == 2 and t.nups == 1)
|
||
|
||
t = debug.getinfo(1) -- main
|
||
assert(t.isvararg == true and t.nparams == 0 and t.nups == 1 and
|
||
debug.getupvalue(t.func, 1) == "_ENV")
|
||
|
||
|
||
|
||
|
||
-- testing debugging of coroutines
|
||
|
||
local function checktraceback (co, p, level)
|
||
local tb = debug.traceback(co, nil, level)
|
||
local i = 0
|
||
for l in string.gmatch(tb, "[^\n]+\n?") do
|
||
assert(i == 0 or string.find(l, p[i]))
|
||
i = i+1
|
||
end
|
||
assert(p[i] == nil)
|
||
end
|
||
|
||
|
||
local function f (n)
|
||
if n > 0 then f(n-1)
|
||
else coroutine.yield() end
|
||
end
|
||
|
||
local co = coroutine.create(f)
|
||
coroutine.resume(co, 3)
|
||
checktraceback(co, {"yield", "db.lua", "db.lua", "db.lua", "db.lua"})
|
||
checktraceback(co, {"db.lua", "db.lua", "db.lua", "db.lua"}, 1)
|
||
checktraceback(co, {"db.lua", "db.lua", "db.lua"}, 2)
|
||
checktraceback(co, {"db.lua"}, 4)
|
||
checktraceback(co, {}, 40)
|
||
|
||
|
||
co = coroutine.create(function (x)
|
||
local a = 1
|
||
coroutine.yield(debug.getinfo(1, "l"))
|
||
coroutine.yield(debug.getinfo(1, "l").currentline)
|
||
return a
|
||
end)
|
||
|
||
local tr = {}
|
||
local foo = function (e, l) if l then table.insert(tr, l) end end
|
||
debug.sethook(co, foo, "lcr")
|
||
|
||
local _, l = coroutine.resume(co, 10)
|
||
local x = debug.getinfo(co, 1, "lfLS")
|
||
assert(x.currentline == l.currentline and x.activelines[x.currentline])
|
||
assert(type(x.func) == "function")
|
||
for i=x.linedefined + 1, x.lastlinedefined do
|
||
assert(x.activelines[i])
|
||
x.activelines[i] = nil
|
||
end
|
||
assert(next(x.activelines) == nil) -- no 'extra' elements
|
||
assert(not debug.getinfo(co, 2))
|
||
local a,b = debug.getlocal(co, 1, 1)
|
||
assert(a == "x" and b == 10)
|
||
a,b = debug.getlocal(co, 1, 2)
|
||
assert(a == "a" and b == 1)
|
||
debug.setlocal(co, 1, 2, "hi")
|
||
assert(debug.gethook(co) == foo)
|
||
assert(#tr == 2 and
|
||
tr[1] == l.currentline-1 and tr[2] == l.currentline)
|
||
|
||
a,b,c = pcall(coroutine.resume, co)
|
||
assert(a and b and c == l.currentline+1)
|
||
checktraceback(co, {"yield", "in function <"})
|
||
|
||
a,b = coroutine.resume(co)
|
||
assert(a and b == "hi")
|
||
assert(#tr == 4 and tr[4] == l.currentline+2)
|
||
assert(debug.gethook(co) == foo)
|
||
assert(not debug.gethook())
|
||
checktraceback(co, {})
|
||
|
||
|
||
-- check get/setlocal in coroutines
|
||
co = coroutine.create(function (x)
|
||
local a, b = coroutine.yield(x)
|
||
assert(a == 100 and b == nil)
|
||
return x
|
||
end)
|
||
a, b = coroutine.resume(co, 10)
|
||
assert(a and b == 10)
|
||
a, b = debug.getlocal(co, 1, 1)
|
||
assert(a == "x" and b == 10)
|
||
assert(not debug.getlocal(co, 1, 5))
|
||
assert(debug.setlocal(co, 1, 1, 30) == "x")
|
||
assert(not debug.setlocal(co, 1, 5, 40))
|
||
a, b = coroutine.resume(co, 100)
|
||
assert(a and b == 30)
|
||
|
||
|
||
-- check traceback of suspended (or dead with error) coroutines
|
||
|
||
function f(i) if i==0 then error(i) else coroutine.yield(); f(i-1) end end
|
||
|
||
co = coroutine.create(function (x) f(x) end)
|
||
a, b = coroutine.resume(co, 3)
|
||
t = {"'coroutine.yield'", "'f'", "in function <"}
|
||
while coroutine.status(co) == "suspended" do
|
||
checktraceback(co, t)
|
||
a, b = coroutine.resume(co)
|
||
table.insert(t, 2, "'f'") -- one more recursive call to 'f'
|
||
end
|
||
t[1] = "'error'"
|
||
checktraceback(co, t)
|
||
|
||
|
||
-- test acessing line numbers of a coroutine from a resume inside
|
||
-- a C function (this is a known bug in Lua 5.0)
|
||
|
||
local function g(x)
|
||
coroutine.yield(x)
|
||
end
|
||
|
||
local function f (i)
|
||
debug.sethook(function () end, "l")
|
||
for j=1,1000 do
|
||
g(i+j)
|
||
end
|
||
end
|
||
|
||
local co = coroutine.wrap(f)
|
||
co(10)
|
||
pcall(co)
|
||
pcall(co)
|
||
|
||
|
||
assert(type(debug.getregistry()) == "table")
|
||
|
||
|
||
-- test tagmethod information
|
||
local a = {}
|
||
local function f (t)
|
||
local info = debug.getinfo(1);
|
||
assert(info.namewhat == "metamethod")
|
||
a.op = info.name
|
||
return info.name
|
||
end
|
||
setmetatable(a, {
|
||
__index = f; __add = f; __div = f; __mod = f; __concat = f; __pow = f;
|
||
__mul = f; __idiv = f; __unm = f; __len = f; __sub = f;
|
||
__shl = f; __shr = f; __bor = f; __bxor = f;
|
||
__eq = f; __le = f; __lt = f; __unm = f; __len = f; __band = f;
|
||
__bnot = f;
|
||
})
|
||
|
||
local b = setmetatable({}, getmetatable(a))
|
||
|
||
assert(a[3] == "__index" and a^3 == "__pow" and a..a == "__concat")
|
||
assert(a/3 == "__div" and 3%a == "__mod")
|
||
assert(a+3 == "__add" and 3-a == "__sub" and a*3 == "__mul" and
|
||
-a == "__unm" and #a == "__len" and a&3 == "__band")
|
||
assert(a|3 == "__bor" and 3~a == "__bxor" and a<<3 == "__shl" and
|
||
a>>1 == "__shr")
|
||
assert (a==b and a.op == "__eq")
|
||
assert (a>=b and a.op == "__le")
|
||
assert (a>b and a.op == "__lt")
|
||
assert(~a == "__bnot")
|
||
|
||
do -- testing for-iterator name
|
||
local function f()
|
||
assert(debug.getinfo(1).name == "for iterator")
|
||
end
|
||
|
||
for i in f do end
|
||
end
|
||
|
||
|
||
do -- testing debug info for finalizers
|
||
local name = nil
|
||
|
||
-- create a piece of garbage with a finalizer
|
||
setmetatable({}, {__gc = function ()
|
||
local t = debug.getinfo(2) -- get callee information
|
||
assert(t.namewhat == "metamethod")
|
||
name = t.name
|
||
end})
|
||
|
||
-- repeat until previous finalizer runs (setting 'name')
|
||
repeat local a = {} until name
|
||
assert(name == "__gc")
|
||
end
|
||
|
||
|
||
do
|
||
print("testing traceback sizes")
|
||
|
||
local function countlines (s)
|
||
return select(2, string.gsub(s, "\n", ""))
|
||
end
|
||
|
||
local function deep (lvl, n)
|
||
if lvl == 0 then
|
||
return (debug.traceback("message", n))
|
||
else
|
||
return (deep(lvl-1, n))
|
||
end
|
||
end
|
||
|
||
local function checkdeep (total, start)
|
||
local s = deep(total, start)
|
||
local rest = string.match(s, "^message\nstack traceback:\n(.*)$")
|
||
local cl = countlines(rest)
|
||
-- at most 10 lines in first part, 11 in second, plus '...'
|
||
assert(cl <= 10 + 11 + 1)
|
||
local brk = string.find(rest, "%.%.%.")
|
||
if brk then -- does message have '...'?
|
||
local rest1 = string.sub(rest, 1, brk)
|
||
local rest2 = string.sub(rest, brk, #rest)
|
||
assert(countlines(rest1) == 10 and countlines(rest2) == 11)
|
||
else
|
||
assert(cl == total - start + 2)
|
||
end
|
||
end
|
||
|
||
for d = 1, 51, 10 do
|
||
for l = 1, d do
|
||
-- use coroutines to ensure complete control of the stack
|
||
coroutine.wrap(checkdeep)(d, l)
|
||
end
|
||
end
|
||
|
||
end
|
||
|
||
|
||
print("testing debug functions on chunk without debug info")
|
||
prog = [[-- program to be loaded without debug information
|
||
local debug = require'debug'
|
||
local a = 12 -- a local variable
|
||
|
||
local n, v = debug.getlocal(1, 1)
|
||
assert(n == "(*temporary)" and v == debug) -- unkown name but known value
|
||
n, v = debug.getlocal(1, 2)
|
||
assert(n == "(*temporary)" and v == 12) -- unkown name but known value
|
||
|
||
-- a function with an upvalue
|
||
local f = function () local x; return a end
|
||
n, v = debug.getupvalue(f, 1)
|
||
assert(n == "(*no name)" and v == 12)
|
||
assert(debug.setupvalue(f, 1, 13) == "(*no name)")
|
||
assert(a == 13)
|
||
|
||
local t = debug.getinfo(f)
|
||
assert(t.name == nil and t.linedefined > 0 and
|
||
t.lastlinedefined == t.linedefined
|
||
-- and t.short_src == "?"
|
||
)
|
||
assert(debug.getinfo(1).currentline == -1)
|
||
|
||
t = debug.getinfo(f, "L").activelines
|
||
assert(next(t) == nil) -- active lines are empty
|
||
|
||
-- dump/load a function without debug info
|
||
f = load(string.dump(f))
|
||
|
||
t = debug.getinfo(f)
|
||
assert(t.name == nil and t.linedefined > 0 and
|
||
t.lastlinedefined == t.linedefined
|
||
-- and t.short_src == "?"
|
||
)
|
||
assert(debug.getinfo(1).currentline == -1)
|
||
|
||
return a
|
||
]]
|
||
|
||
|
||
-- load 'prog' without debug info
|
||
local f = assert(load(string.dump(load(prog), true)))
|
||
|
||
assert(f() == 13)
|
||
|
||
do -- tests for 'source' in binary dumps
|
||
local prog = [[
|
||
return function (x)
|
||
return function (y)
|
||
return x + y
|
||
end
|
||
end
|
||
]]
|
||
local name = string.rep("x", 1000)
|
||
local p = assert(load(prog, name))
|
||
-- load 'p' as a binary chunk with debug information
|
||
local c = string.dump(p)
|
||
assert(#c > 1000 and #c < 2000) -- no repetition of 'source' in dump
|
||
local f = assert(load(c))
|
||
local g = f()
|
||
local h = g(3)
|
||
assert(h(5) == 8)
|
||
assert(debug.getinfo(f).source == name and -- all functions have 'source'
|
||
debug.getinfo(g).source == name and
|
||
debug.getinfo(h).source == name)
|
||
-- again, without debug info
|
||
local c = string.dump(p, true)
|
||
--[=[ TODO: NodeMCU need to work out why there is a source in the dmp
|
||
assert(#c < 500) -- no 'source' in dump
|
||
local f = assert(load(c))
|
||
local g = f()
|
||
local h = g(30)
|
||
assert(h(50) == 80)
|
||
assert(debug.getinfo(f).source == '=?' and -- no function has 'source'
|
||
debug.getinfo(g).source == '=?' and
|
||
debug.getinfo(h).source == '=?')
|
||
]=]
|
||
end
|
||
|
||
print"OK"
|
||
|