From 2e7f771a182df815e8c3d38986a1df0c77d7e4aa Mon Sep 17 00:00:00 2001 From: Hadriel Kaplan Date: Sun, 2 Feb 2014 22:49:30 -0500 Subject: Adds support for Lua Int64 and UInt64 operators, functions, and general usefulness, working around bug #9162 until Lua 5.3 is released. The existing Int64 and UInt64 classes provide virtually no usefullness, other than for creating a string of their value. While one could then write Lua code to convert the string to Lua numbers and such, ultimately Lua has no native 64-bit integer support, making such a task difficult to handle in Lua. This change adds a host of functions and operators to the existing Int64 (gint64) and UInt64 (guint64) classes, to enable true 64-bit integer support on par with native Lua numbers. A test script is also provided, which tests the functions/operators. Change-Id: I4c5f8f5219b9a88198902283bd32ddf24c346bbe Reviewed-on: https://code.wireshark.org/review/83 Tested-by: Evan Huus Reviewed-by: Evan Huus --- test/lua/int64.lua | 341 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 341 insertions(+) create mode 100755 test/lua/int64.lua (limited to 'test/lua/int64.lua') diff --git a/test/lua/int64.lua b/test/lua/int64.lua new file mode 100755 index 0000000000..c0c8f9dd45 --- /dev/null +++ b/test/lua/int64.lua @@ -0,0 +1,341 @@ + +-- This is a test script for tshark/wireshark. +-- This script runs inside tshark/wireshark, so to run it do: +-- wireshark -X lua_script:/lua/int64.lua +-- tshark -r bogus.cap -X lua_script:/lua/int64.lua + +-- Tests Int64/UInt64 functions + +local function testing(...) + print("---- Testing "..tostring(...).." ----") +end + +local function test(name, ...) + io.stdout:write("test "..name.."...") + if (...) == true then + io.stdout:write("passed\n") + else + io.stdout:write("failed!\n") + error(name.." test failed!") + end +end + +-- you can't compare (use the '==') userdata objects with numbers, so this function does it instead. +function checkeq(arg1,arg2) + if arg1 == arg2 then + return true + elseif type(arg1) == 'userdata' and arg1.tonumber then + if type(arg2) == 'userdata' and arg2.tonumber then + return arg1:tonumber() == arg2:tonumber() + else + return arg1:tonumber() == arg2 + end + elseif type(arg2) == 'userdata' and arg2.tonumber then + return arg1 == arg2:tonumber() + else + return false + end +end + +----------------------------- + +testing("Int64/UInt64 library") + +local testtbl = { { ["type"]=Int64, ["name"]="Int64" } , { ["type"]=UInt64, ["name"]="UInt64" } } + +for i,t in ipairs(testtbl) do + + local function testing(...) + print("---- Testing "..t.name..": "..tostring(...).." ----") + end + + local function test(name, ...) + io.stdout:write("test "..t.name.."-"..name.."...") + if (...) == true then + io.stdout:write("passed\n") + else + io.stdout:write("failed!\n") + error(name.." test failed!") + end + end + + testing("class") + local obj = t.type + + for name, val in pairs(obj) do + print("\t"..name.." = "..type(val)) + end + + test("class1",type(obj) == 'table') + test("class2",type(obj.new) == 'function') + test("class3",type(obj.max) == 'function') + test("class4",type(obj.min) == 'function') + test("class5",type(obj.tonumber) == 'function') + test("class6",type(obj.fromhex) == 'function') + test("class7",type(obj.tohex) == 'function') + test("class8",type(obj.higher) == 'function') + test("class9",type(obj.lower) == 'function') + + + testing("new, tonumber, tostring") + local val = 12345 + local my64a = obj.new(val) + local my64b = obj.new(tostring(val)) + local zero = obj.new(0) + -- remember in Lua it's a double, so only precise up to 9,007,199,254,740,992 + local my64c = obj.new(val,100) + local valc = (100 * 4294967296) + val + print(tostring(my64c)) + local my64z = obj.new(0,0) + local my64d = obj.new(0,100) + local vald = (100 * 4294967296) + + test("new1",checkeq(my64a,val)) + test("new2",checkeq(my64b,val)) + test("new3",checkeq(my64a,obj.new(my64b))) + test("new4",checkeq(valc,my64c)) + test("new5",checkeq(0,my64z)) + test("new6",obj.new(0,1):tonumber() == (2^32)) + if t.name == "Int64" then + test("new7",obj.new(-1):tonumber() == -1) + test("new8",obj.new(0,-1):tonumber() == -4294967296) + test("new9",obj.new(obj.new(-1)):tonumber() == -1) + end + + test("tonumber1",val == my64a:tonumber()) + test("tonumber2",valc == my64c:tonumber()) + test("tonumber3",vald == my64d:tonumber()) + test("tonumber4",0 == my64z:tonumber()) + + test("tostring1", tostring(my64a)==tostring(val)) + test("tostring2",tostring(my64b)==tostring(val)) + test("tostring3",tostring(my64c)==tostring(valc)) + test("tostring4",tostring(my64d)==tostring(vald)) + + + testing("compare ops") + + test("eq", my64a == my64b) + + test("le1", my64a <= my64b) + test("le2", my64a <= my64c) + test("le3", my64z <= my64c) + + test("ge1", my64a >= my64b) + test("ge2", my64c >= my64b) + test("ge2", my64c >= my64z) + + test("neq1",not(my64a ~= my64b)) + test("neq2",my64a ~= obj.new(0)) + test("neq2",my64a ~= my64c) + + test("gt1",my64a > my64z) + test("gt2",my64c > my64a) + + test("lt1",not(my64a < my64b)) + test("lt2",my64a < my64c) + + + testing("math ops") + + test("add1",checkeq(my64a + my64b, val + val)) + test("add2",my64a + my64z == my64b) + test("add3",my64a + my64b == my64b + my64a) + test("add4",my64d + my64a == my64c) + test("add5",checkeq(my64a + vald, valc)) + test("add6",checkeq(vald + my64a, valc)) + + test("sub1",checkeq(my64a - my64b, 0)) + test("sub2",my64a - my64b == my64z) + test("sub3",my64a - my64b == my64b - my64a) + test("sub4",my64c - my64a == my64d) + test("sub5",checkeq(my64a - val, 0)) + + test("mod1",checkeq(my64a % my64b, 0)) + test("mod2",checkeq(my64c % my64b, valc % val)) + test("mod3",checkeq(my64c % val, valc % val)) + test("mod4",checkeq(val % my64c, val % valc)) + + test("div1",checkeq(my64a / my64b, 1)) + test("div2",checkeq(my64a / val, 1)) + test("div3",checkeq(val / my64a, 1)) + test("div4",my64c / my64d == obj.new(1)) + + test("pow1",checkeq(my64a ^ 1, val)) + test("pow2",checkeq(my64a ^ obj.new(2), val ^ 2)) + test("pow3",checkeq(my64a ^ obj.new(3), val ^ 3)) + test("pow4",checkeq(my64c ^ 1, valc ^ 1)) + + test("mul1",checkeq(my64a * obj.new(1), my64b)) + test("mul2",checkeq(my64a * my64b, my64b * my64a)) + test("mul3",checkeq(my64a * 1, my64b)) + test("mul4",checkeq(2 * my64c, 2 * valc)) + + if t.name == "Int64" then + -- unary minus on UInt64 is illogical, but oh well + test("unm1",checkeq(-my64a,-val)) + test("unm2",checkeq(string.sub(tostring(-my64a),1,1), "-")) + test("unm3",checkeq(-my64c,-valc)) + else + test("unm1",checkeq(-my64a,val)) + test("unm2",checkeq(string.sub(tostring(-my64a),1,1), "1")) + test("unm3",checkeq(-my64c,valc)) + end + test("unm4",checkeq(-my64z,0)) + + testing("methods") + + test("higher1",my64a:higher() == 0) + test("higher2",my64c:higher() == 100) + + test("lower1",my64a:lower() == val) + test("lower2",my64c:lower() == val) + test("lower3",my64d:lower() == 0) + + local vale1 = 3735928559 -- yields hex of deadbeef + local vale2 = 5045997 -- yields 4cfeed + local my64e = obj.new(vale1, vale2) + test("fromhex1",obj.fromhex("0000000000003039") == my64a); + test("fromhex2",obj.fromhex("3039") == my64a); + test("fromhex3",obj.fromhex("0000006400003039") == my64c); + test("fromhex4",obj.fromhex("0000000000000000") == my64z); + test("fromhex5",obj.fromhex("004cfeeddeadbeef") == my64e); + test("fromhex6",obj.fromhex("4cFEEDDEADBEEF") == my64e); + + test("tohex1",my64a:tohex() == "0000000000003039") + test("tohex2",my64c:tohex(16) == "0000006400003039") + test("tohex3",my64z:tohex() == "0000000000000000") + test("tohex4",my64e:tohex() == "004cfeeddeadbeef") + test("tohex5",my64e:tohex(8) == "deadbeef") + test("tohex6",my64e:tohex(-8) == "DEADBEEF") + + test("encode1",my64a:encode(true) == "\57\48\00\00\00\00\00\00") + test("encode2",my64a:encode(false) == "\00\00\00\00\00\00\48\57") + test("encode3",my64c:encode(false) == "\00\00\00\100\00\00\48\57") + + test("decode1",obj.decode("\57\48\00\00\00\00\00\00", true) == my64a) + test("decode2",obj.decode("\00\00\00\00\00\00\48\57", false) == my64a) + test("decode3",obj.decode("\00\00\00\100\00\00\48\57", false) == my64c) + + + local function testpower(b) + testing("powers of "..b) + b=obj.new(b) + local z=obj.new(1) + for i=0,100 do + print(i,z,b^i) + assert(z==b^i) + z=b*z + end + end + + testpower(2) + testpower(3) + + testing"factorials" + + F={ + [1]="1", + [2]="2", + [3]="6", + [4]="24", + [5]="120", + [6]="720", + [7]="5040", + [8]="40320", + [9]="362880", + [10]="3628800", + [11]="39916800", + [12]="479001600", + [13]="6227020800", + [14]="87178291200", + [15]="1307674368000", + [16]="20922789888000", + [17]="355687428096000", + [18]="6402373705728000", + [19]="121645100408832000", + [20]="2432902008176640000", + } + z=obj.new(1) + f=1 + for i=1,20 do + z=z*i + f=f*i + s=obj.tonumber(z) + print(i,z,f,f==obj.tonumber(z),tostring(z)==F[i]) + --print(i,int64.new(F[i])) + end + + testing("bit operations") + + test("band1",checkeq(obj.new(1):band(1), 1)) + test("band2",checkeq(obj.new(1):band(0), 0)) + test("band3",checkeq(obj.new(4294967295,100):band(4294967295), 4294967295)) + test("band4",obj.new(4294967295,100):band(obj.new(0,100),obj.new(0,100),obj.new(0,100)) == obj.new(0,100)) + test("band5",checkeq(obj.new(4294967295,100):band(obj.new(0,100),obj.new(0)), 0)) + + test("bor1",checkeq(obj.new(1):bor(1), 1)) + test("bor2",checkeq(obj.new(1):bor(0), 1)) + test("bor3",checkeq(obj.new(0):bor(0), 0)) + test("bor4",obj.new(0,100):bor(4294967295) == obj.new(4294967295,100)) + test("bor5",obj.new(1):bor(obj.new(2),obj.new(4),obj.new(8),16,32,64,128) == obj.new(255)) + + test("bxor1",checkeq(obj.new(1):bxor(1), 0)) + test("bxor2",checkeq(obj.new(1):bxor(0), 1)) + test("bxor3",checkeq(obj.new(0):bxor(0), 0)) + test("bxor4",obj.new(4294967295,100):bxor(obj.new(0,100)) == obj.new(4294967295)) + test("bxor5",obj.new(1):bxor(obj.new(2),obj.new(4),obj.new(8),16,32,64,128) == obj.new(255)) + + test("bnot1",checkeq(obj.new(4294967295,4294967295):bnot(), 0)) + test("bnot2",obj.new(0):bnot() == obj.new(4294967295,4294967295)) + test("bnot3",obj.new(0xaaaaaaaa,0xaaaaaaaa):bnot() == obj.new( 0x55555555, 0x55555555)) + + test("bsawp1",obj.new( 0x01020304, 0x05060708 ):bswap() == obj.new( 0x08070605, 0x04030201 )) + test("bsawp2",obj.new( 0xFF020304, 0xFF060708 ):bswap() == obj.new( 0x080706FF, 0x040302FF )) + + test("lshift1",obj.new( 0x01020304, 0x0506070F ):lshift(4) == obj.new( 0x10203040, 0x506070f0 )) + test("lshift2",obj.new( 0x0102030F, 0x05060708 ):lshift(63) == obj.new( 0, 0x80000000 )) + if t.name == "Int64" then + test("lshift3",checkeq(obj.new( 0x0102030F, 0x05060708 ):lshift(63), -9223372036854775808)) + else + test("lshift3",obj.new( 0x0102030F, 0x05060708 ):lshift(63) == obj.new( 0, 0x80000000 )) + end + + test("rshift1",obj.new( 0x01020304, 0xF5060708 ):rshift(4) == obj.new( 0x80102030, 0x0F506070 )) + test("rshift2",checkeq(obj.new( 0x01020304, 0xF5060708 ):rshift(63), 1)) + + if t.name == "Int64" then + test("arshift1",obj.new( 0x01020304, 0xF5060708 ):arshift(4) == obj.new( 0x80102030, 0xFF506070 )) + test("arshift2",obj.new( 0x01020304, 0xF5060708 ):arshift(63) == obj.new( 0xFFFFFFFF, 0xFFFFFFFF )) + else + test("arshift1",obj.new( 0x01020304, 0xF5060708 ):arshift(4) == obj.new( 0x80102030, 0x0F506070 )) + test("arshift2",checkeq(obj.new( 0x01020304, 0xF5060708 ):arshift(63),1)) + end + test("arshift3",obj.new( 0x01020304, 0x05060708 ):arshift(4) == obj.new( 0x80102030, 0x00506070 )) + test("arshift4",checkeq(obj.new( 0x01020304, 0x05060708 ):arshift(63), 0)) + + test("rol1",obj.new( 0x01020304, 0xF5060708 ):rol(4) == obj.new( 0x1020304F, 0x50607080 )) + test("rol2",obj.new( 0x01020304, 0xF5060708 ):rol(32):rol(32) == obj.new( 0x01020304, 0xF5060708 )) + + test("ror1",obj.new( 0x01020304, 0xF5060708 ):ror(4) == obj.new( 0x80102030, 0x4F506070 )) + test("ror2",obj.new( 0x01020304, 0xF5060708 ):ror(32):ror(32) == obj.new( 0x01020304, 0xF5060708 )) + +end + +testing("min and max values") +z=Int64.new(2) +z=z^63-1 +test("max1",tostring(Int64.max()) == "9223372036854775807") +test("max2",Int64.max() == Int64.new(4294967295, 2147483647)) +test("max3",z==Int64.max()) +test("min1",tostring(Int64.min()) == "-9223372036854775808") +test("min2",Int64.min() == Int64.new(0,2147483648)) +z=-z +z=z-1 +test("min3",z==Int64.min()) + +test("minmax",Int64.min()== - Int64.max() - 1) + +print("\n-----------------------------\n") + +print("All tests passed!\n\n") -- cgit v1.2.1