mirror of https://github.com/tidwall/tile38.git
397 lines
8.4 KiB
Lua
397 lines
8.4 KiB
Lua
print('testing tables, next, and for')
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local a = {}
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-- make sure table has lots of space in hash part
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for i=1,100 do a[i.."+"] = true end
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for i=1,100 do a[i.."+"] = nil end
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-- fill hash part with numeric indices testing size operator
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for i=1,100 do
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a[i] = true
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assert(#a == i)
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end
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if T then
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-- testing table sizes
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local l2 = math.log(2)
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local function log2 (x) return math.log(x)/l2 end
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local function mp2 (n) -- minimum power of 2 >= n
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local mp = 2^math.ceil(log2(n))
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assert(n == 0 or (mp/2 < n and n <= mp))
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return mp
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end
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local function fb (n)
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local r, nn = T.int2fb(n)
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assert(r < 256)
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return nn
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end
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-- test fb function
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local a = 1
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local lim = 2^30
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while a < lim do
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local n = fb(a)
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assert(a <= n and n <= a*1.125)
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a = math.ceil(a*1.3)
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end
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local function check (t, na, nh)
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local a, h = T.querytab(t)
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if a ~= na or h ~= nh then
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print(na, nh, a, h)
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assert(nil)
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end
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end
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-- testing constructor sizes
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local lim = 40
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local s = 'return {'
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for i=1,lim do
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s = s..i..','
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local s = s
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for k=0,lim do
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local t = loadstring(s..'}')()
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assert(#t == i)
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check(t, fb(i), mp2(k))
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s = string.format('%sa%d=%d,', s, k, k)
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end
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end
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-- tests with unknown number of elements
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local a = {}
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for i=1,lim do a[i] = i end -- build auxiliary table
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for k=0,lim do
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local a = {unpack(a,1,k)}
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assert(#a == k)
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check(a, k, 0)
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a = {1,2,3,unpack(a,1,k)}
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check(a, k+3, 0)
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assert(#a == k + 3)
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end
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print'+'
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-- testing tables dynamically built
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local lim = 130
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local a = {}; a[2] = 1; check(a, 0, 1)
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a = {}; a[0] = 1; check(a, 0, 1); a[2] = 1; check(a, 0, 2)
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a = {}; a[0] = 1; a[1] = 1; check(a, 1, 1)
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a = {}
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for i = 1,lim do
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a[i] = 1
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assert(#a == i)
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check(a, mp2(i), 0)
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end
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a = {}
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for i = 1,lim do
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a['a'..i] = 1
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assert(#a == 0)
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check(a, 0, mp2(i))
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end
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a = {}
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for i=1,16 do a[i] = i end
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check(a, 16, 0)
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for i=1,11 do a[i] = nil end
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for i=30,40 do a[i] = nil end -- force a rehash (?)
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check(a, 0, 8)
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a[10] = 1
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for i=30,40 do a[i] = nil end -- force a rehash (?)
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check(a, 0, 8)
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for i=1,14 do a[i] = nil end
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for i=30,50 do a[i] = nil end -- force a rehash (?)
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check(a, 0, 4)
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-- reverse filling
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for i=1,lim do
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local a = {}
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for i=i,1,-1 do a[i] = i end -- fill in reverse
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check(a, mp2(i), 0)
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end
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-- size tests for vararg
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lim = 35
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function foo (n, ...)
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local arg = {...}
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check(arg, n, 0)
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assert(select('#', ...) == n)
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arg[n+1] = true
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check(arg, mp2(n+1), 0)
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arg.x = true
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check(arg, mp2(n+1), 1)
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end
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local a = {}
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for i=1,lim do a[i] = true; foo(i, unpack(a)) end
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end
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-- test size operation on empty tables
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assert(#{} == 0)
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assert(#{nil} == 0)
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assert(#{nil, nil} == 0)
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assert(#{nil, nil, nil} == 0)
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assert(#{nil, nil, nil, nil} == 0)
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print'+'
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local nofind = {}
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a,b,c = 1,2,3
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a,b,c = nil
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local function find (name)
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local n,v
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while 1 do
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n,v = next(_G, n)
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if not n then return nofind end
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assert(v ~= nil)
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if n == name then return v end
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end
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end
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local function find1 (name)
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for n,v in pairs(_G) do
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if n==name then return v end
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end
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return nil -- not found
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end
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do -- create 10000 new global variables
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for i=1,10000 do _G[i] = i end
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end
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a = {x=90, y=8, z=23}
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assert(table.foreach(a, function(i,v) if i=='x' then return v end end) == 90)
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assert(table.foreach(a, function(i,v) if i=='a' then return v end end) == nil)
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table.foreach({}, error)
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table.foreachi({x=10, y=20}, error)
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local a = {n = 1}
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table.foreachi({n=3}, function (i, v)
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assert(a.n == i and not v)
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a.n=a.n+1
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end)
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a = {10,20,30,nil,50}
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table.foreachi(a, function (i,v) assert(a[i] == v) end)
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assert(table.foreachi({'a', 'b', 'c'}, function (i,v)
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if i==2 then return v end
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end) == 'b')
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assert(print==find("print") and print == find1("print"))
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assert(_G["print"]==find("print"))
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assert(assert==find1("assert"))
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assert(nofind==find("return"))
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assert(not find1("return"))
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_G["ret" .. "urn"] = nil
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assert(nofind==find("return"))
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_G["xxx"] = 1
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assert(xxx==find("xxx"))
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print('+')
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a = {}
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for i=0,10000 do
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if math.mod(i,10) ~= 0 then
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a['x'..i] = i
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end
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end
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n = {n=0}
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for i,v in pairs(a) do
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n.n = n.n+1
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assert(i and v and a[i] == v)
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end
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assert(n.n == 9000)
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a = nil
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-- remove those 10000 new global variables
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for i=1,10000 do _G[i] = nil end
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do -- clear global table
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local a = {}
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local preserve = {io = 1, string = 1, debug = 1, os = 1,
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coroutine = 1, table = 1, math = 1}
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for n,v in pairs(_G) do a[n]=v end
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for n,v in pairs(a) do
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if not preserve[n] and type(v) ~= "function" and
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not string.find(n, "^[%u_]") then
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_G[n] = nil
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end
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collectgarbage()
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end
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end
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local function foo ()
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local getfenv, setfenv, assert, next =
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getfenv, setfenv, assert, next
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local n = {gl1=3}
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setfenv(foo, n)
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assert(getfenv(foo) == getfenv(1))
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assert(getfenv(foo) == n)
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assert(print == nil and gl1 == 3)
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gl1 = nil
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gl = 1
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assert(n.gl == 1 and next(n, 'gl') == nil)
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end
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foo()
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print'+'
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local function checknext (a)
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local b = {}
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table.foreach(a, function (k,v) b[k] = v end)
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for k,v in pairs(b) do assert(a[k] == v) end
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for k,v in pairs(a) do assert(b[k] == v) end
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b = {}
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do local k,v = next(a); while k do b[k] = v; k,v = next(a,k) end end
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for k,v in pairs(b) do assert(a[k] == v) end
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for k,v in pairs(a) do assert(b[k] == v) end
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end
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checknext{1,x=1,y=2,z=3}
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checknext{1,2,x=1,y=2,z=3}
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checknext{1,2,3,x=1,y=2,z=3}
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checknext{1,2,3,4,x=1,y=2,z=3}
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checknext{1,2,3,4,5,x=1,y=2,z=3}
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assert(table.getn{} == 0)
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assert(table.getn{[-1] = 2} == 0)
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assert(table.getn{1,2,3,nil,nil} == 3)
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for i=0,40 do
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local a = {}
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for j=1,i do a[j]=j end
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assert(table.getn(a) == i)
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end
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assert(table.maxn{} == 0)
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assert(table.maxn{["1000"] = true} == 0)
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assert(table.maxn{["1000"] = true, [24.5] = 3} == 24.5)
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assert(table.maxn{[1000] = true} == 1000)
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assert(table.maxn{[10] = true, [100*math.pi] = print} == 100*math.pi)
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-- int overflow
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a = {}
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for i=0,50 do a[math.pow(2,i)] = true end
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assert(a[table.getn(a)])
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print("+")
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-- erasing values
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local t = {[{1}] = 1, [{2}] = 2, [string.rep("x ", 4)] = 3,
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[100.3] = 4, [4] = 5}
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local n = 0
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for k, v in pairs( t ) do
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n = n+1
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assert(t[k] == v)
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t[k] = nil
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collectgarbage()
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assert(t[k] == nil)
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end
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assert(n == 5)
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local function test (a)
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table.insert(a, 10); table.insert(a, 2, 20);
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table.insert(a, 1, -1); table.insert(a, 40);
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table.insert(a, table.getn(a)+1, 50)
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table.insert(a, 2, -2)
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assert(table.remove(a,1) == -1)
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assert(table.remove(a,1) == -2)
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assert(table.remove(a,1) == 10)
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assert(table.remove(a,1) == 20)
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assert(table.remove(a,1) == 40)
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assert(table.remove(a,1) == 50)
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assert(table.remove(a,1) == nil)
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end
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a = {n=0, [-7] = "ban"}
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test(a)
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assert(a.n == 0 and a[-7] == "ban")
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a = {[-7] = "ban"};
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test(a)
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assert(a.n == nil and table.getn(a) == 0 and a[-7] == "ban")
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table.insert(a, 1, 10); table.insert(a, 1, 20); table.insert(a, 1, -1)
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assert(table.remove(a) == 10)
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assert(table.remove(a) == 20)
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assert(table.remove(a) == -1)
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a = {'c', 'd'}
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table.insert(a, 3, 'a')
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table.insert(a, 'b')
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assert(table.remove(a, 1) == 'c')
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assert(table.remove(a, 1) == 'd')
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assert(table.remove(a, 1) == 'a')
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assert(table.remove(a, 1) == 'b')
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assert(table.getn(a) == 0 and a.n == nil)
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print("+")
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a = {}
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for i=1,1000 do
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a[i] = i; a[i-1] = nil
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end
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assert(next(a,nil) == 1000 and next(a,1000) == nil)
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assert(next({}) == nil)
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assert(next({}, nil) == nil)
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for a,b in pairs{} do error"not here" end
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for i=1,0 do error'not here' end
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for i=0,1,-1 do error'not here' end
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a = nil; for i=1,1 do assert(not a); a=1 end; assert(a)
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a = nil; for i=1,1,-1 do assert(not a); a=1 end; assert(a)
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a = 0; for i=0, 1, 0.1 do a=a+1 end; assert(a==11)
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-- precision problems
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--a = 0; for i=1, 0, -0.01 do a=a+1 end; assert(a==101)
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a = 0; for i=0, 0.999999999, 0.1 do a=a+1 end; assert(a==10)
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a = 0; for i=1, 1, 1 do a=a+1 end; assert(a==1)
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a = 0; for i=1e10, 1e10, -1 do a=a+1 end; assert(a==1)
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a = 0; for i=1, 0.99999, 1 do a=a+1 end; assert(a==0)
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a = 0; for i=99999, 1e5, -1 do a=a+1 end; assert(a==0)
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a = 0; for i=1, 0.99999, -1 do a=a+1 end; assert(a==1)
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-- conversion
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a = 0; for i="10","1","-2" do a=a+1 end; assert(a==5)
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collectgarbage()
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-- testing generic 'for'
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local function f (n, p)
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local t = {}; for i=1,p do t[i] = i*10 end
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return function (_,n)
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if n > 0 then
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n = n-1
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return n, unpack(t)
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end
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end, nil, n
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end
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local x = 0
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for n,a,b,c,d in f(5,3) do
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x = x+1
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assert(a == 10 and b == 20 and c == 30 and d == nil)
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end
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assert(x == 5)
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print"OK"
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