mirror of
https://github.com/gvx/bitser.git
synced 2024-12-07 11:54:22 +00:00
344 lines
10 KiB
Lua
344 lines
10 KiB
Lua
local ffi = require 'ffi'
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_G.love = {filesystem = {newFileData = function()
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return {getPointer = function()
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local buf = ffi.new("uint8_t[?]", #love.s)
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ffi.copy(buf, love.s, #love.s)
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return buf
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end, getSize = function()
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return #love.s
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end}
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end, write = function(_, s)
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love.s = s
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return true
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end}}
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local bitser = require 'bitser'
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local function serdeser(value)
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return bitser.loads(bitser.dumps(value))
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end
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local function test_serdeser(value)
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assert.are.same(serdeser(value), value)
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end
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local function test_serdeser_idempotent(value)
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assert.are.same(bitser.dumps(serdeser(value)), bitser.dumps(value))
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end
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describe("bitser", function()
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it("serializes simple values", function()
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test_serdeser(true)
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test_serdeser(false)
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test_serdeser(nil)
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test_serdeser(1)
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test_serdeser(-1)
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test_serdeser(0)
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test_serdeser(100000000)
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test_serdeser(1.234)
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test_serdeser(10 ^ 20)
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test_serdeser(1/0)
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test_serdeser(-1/0)
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test_serdeser("")
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test_serdeser("hullo")
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test_serdeser([[this
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is a longer string
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such a long string
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that it won't fit
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in the "short string" representation
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no it won't
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listen to me
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it won't]])
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local nan = serdeser(0/0)
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assert.is_not.equal(nan, nan)
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end)
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it("serializes simple tables", function()
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test_serdeser({})
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test_serdeser({10, 11, 12})
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test_serdeser({foo = 10, bar = 99, [true] = false})
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test_serdeser({[1000] = 9000})
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test_serdeser({{}})
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end)
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it("serializes tables with tables as keys", function()
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local thekey = {"Heyo"}
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assert.are.same(thekey, (next(serdeser({[thekey] = 12}))))
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end)
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it("serializes cyclic tables", function()
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local cthulhu = {{}, {}, {}}
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cthulhu.fhtagn = cthulhu
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--note: this does not test tables as keys because assert.are.same doesn't like that
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cthulhu[1].cthulhu = cthulhu[3]
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cthulhu[2].cthulhu = cthulhu[2]
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cthulhu[3].cthulhu = cthulhu
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test_serdeser(cthulhu)
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end)
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it("serializes resources", function()
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local temp_resource = {}
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bitser.register("temp_resource", temp_resource)
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assert.are.equal(serdeser({this = temp_resource}).this, temp_resource)
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bitser.unregister("temp_resource")
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end)
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it("serializes many resources", function()
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local max = 1000
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local t = {}
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for i = 1, max do
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bitser.register(tostring(i), i)
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t[i] = i
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end
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test_serdeser(t)
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for i = 1, max do
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bitser.unregister(tostring(i))
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end
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end)
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it("serializes deeply nested tables", function()
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local max = 1000
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local t = {}
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for _ = 1, max do
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t.t = {}
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t = t.t
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end
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test_serdeser(t)
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end)
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it("serializes MiddleClass instances", function()
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local class = require("middleclass")
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local Horse = bitser.registerClass(class('Horse'))
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function Horse:initialize(name)
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self.name = name
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self[1] = 'instance can be sequence'
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end
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local bojack = Horse('Bojack Horseman')
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test_serdeser(bojack)
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assert.is_true(serdeser(bojack):isInstanceOf(Horse))
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bitser.unregisterClass('Horse')
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end)
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it("serializes SECL instances", function()
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local class_mt = {}
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function class_mt:__index(key)
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return self.__baseclass[key]
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end
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local class = setmetatable({ __baseclass = {} }, class_mt)
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function class:new(...)
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local c = {}
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c.__baseclass = self
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setmetatable(c, getmetatable(self))
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if c.init then
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c:init(...)
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end
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return c
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end
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local Horse = bitser.registerClass('Horse', class:new())
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function Horse:init(name)
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self.name = name
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self[1] = 'instance can be sequence'
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end
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local bojack = Horse:new('Bojack Horseman')
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test_serdeser(bojack)
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assert.are.equal(serdeser(bojack).__baseclass, Horse)
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bitser.unregisterClass('Horse')
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end)
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it("serializes hump.class instances", function()
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local class = require("class")
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local Horse = bitser.registerClass('Horse', class{})
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function Horse:init(name)
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self.name = name
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self[1] = 'instance can be sequence'
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end
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local bojack = Horse('Bojack Horseman')
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test_serdeser(bojack)
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assert.are.equal(getmetatable(serdeser(bojack)), Horse)
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bitser.unregisterClass('Horse')
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end)
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it("serializes Slither instances", function()
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local class = require("slither")
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local Horse = class.private 'Horse' {
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__attributes__ = {bitser.registerClass},
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__init__ = function(self, name)
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self.name = name
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self[1] = 'instance can be sequence'
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end
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}
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local bojack = Horse('Bojack Horseman')
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test_serdeser(bojack)
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assert.is_true(class.isinstance(serdeser(bojack), Horse))
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bitser.unregisterClass('Horse')
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end)
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it("serializes Moonscript class instances", function()
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local Horse
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do
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local _class_0
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local _base_0 = {}
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_base_0.__index = _base_0
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_class_0 = setmetatable({
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__init = function(self, name)
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self.name = name
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self[1] = 'instance can be sequence'
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end,
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__base = _base_0,
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__name = "Horse"}, {
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__index = _base_0,
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__call = function(cls, ...)
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local _self_0 = setmetatable({}, _base_0)
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cls.__init(_self_0, ...)
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return _self_0
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end
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})
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_base_0.__class = _class_0
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Horse = _class_0
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end
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assert.are.same(Horse.__name, "Horse") -- to shut coveralls up
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bitser.registerClass(Horse)
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local bojack = Horse('Bojack Horseman')
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test_serdeser(bojack)
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local new_bojack = serdeser(bojack)
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assert.are.equal(new_bojack.__class, Horse)
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bitser.unregisterClass('Horse')
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end)
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it("serializes custom class instances", function()
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local Horse_mt = bitser.registerClass('Horse', {__index = {}}, nil, setmetatable)
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local function Horse(name)
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local self = {}
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self.name = name
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self[1] = 'instance can be sequence'
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return setmetatable(self, Horse_mt)
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end
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local bojack = Horse('Bojack Horseman')
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test_serdeser(bojack)
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assert.are.equal(getmetatable(serdeser(bojack)), Horse_mt)
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bitser.unregisterClass('Horse')
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end)
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it("serializes classes that repeat keys", function()
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local my_mt = {"hi"}
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local works = { foo = 'a', bar = {baz = 'b'}, }
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local broken = { foo = 'a', bar = {foo = 'b'}, }
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local more_broken = {
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foo = 'a',
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baz = {foo = 'b', bar = 'c'},
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quz = {bar = 'd', bam = 'e'}
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}
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setmetatable(works, my_mt)
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setmetatable(broken, my_mt)
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setmetatable(more_broken, my_mt)
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bitser.registerClass("Horse", my_mt, nil, setmetatable)
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test_serdeser(works)
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test_serdeser(broken)
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test_serdeser(more_broken)
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bitser.unregisterClass('Horse')
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end)
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it("serializes big data", function()
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local text = "this is a lot of nonsense, please disregard, we need a lot of data to get past 4 KiB (114 characters should do it)"
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local t = {}
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for i = 1, 40 do
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t[i] = text .. i -- no references allowed!
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end
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test_serdeser(t)
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end)
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it("serializes many references", function()
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local max = 1000
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local t = {}
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local t2 = {}
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for i = 1, max do
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t.t = {}
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t = t.t
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t2[i] = t
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end
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test_serdeser({t, t2})
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end)
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it("serializes resources with long names", function()
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local temp_resource = {}
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bitser.register("temp_resource_or_whatever", temp_resource)
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assert.are.equal(serdeser({this = temp_resource}).this, temp_resource)
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bitser.unregister("temp_resource_or_whatever")
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end)
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it("serializes resources with the same name as serialized strings", function()
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local temp_resource = {}
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bitser.register('temp', temp_resource)
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test_serdeser({temp='temp', {temp_resource}})
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bitser.unregister('temp')
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end)
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it("serializes resources with the same long name as serialized strings", function()
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local temp_resource = {}
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bitser.register('temp_resource_or_whatever', temp_resource)
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test_serdeser({temp_resource_or_whatever='temp_resource_or_whatever', {temp_resource}})
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bitser.unregister('temp_resource_or_whatever')
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end)
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it("cannot serialize functions", function()
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assert.has_error(function() bitser.dumps(function() end) end, "cannot serialize type function")
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end)
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it("cannot serialize unsupported class libraries without explicit deserializer", function()
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assert.has_error(function() bitser.registerClass('Horse', {mane = 'majestic'}) end, "no deserializer given for unsupported class library")
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end)
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it("cannot deserialize values from unassigned type bytes", function()
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assert.has_error(function() bitser.loads("\254") end, "unsupported serialized type 254")
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assert.has_error(function() bitser.loads("\255") end, "unsupported serialized type 255")
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end)
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it("can load from raw data", function()
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assert.are.same(bitser.loadData(ffi.new("uint8_t[4]", 195, 103, 118, 120), 4), "gvx")
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end)
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it("will not read from zero length data", function()
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assert.has_error(function() bitser.loadData(ffi.new("uint8_t[1]", 0), 0) end)
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end)
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it("will not read from zero length string", function()
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assert.has_error(function() bitser.loads("") end)
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end)
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it("will not read past the end of the buffer", function()
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assert.has_error(function() bitser.loadData(ffi.new("uint8_t[4]", 196, 103, 118, 120), 4) end)
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end)
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it("can clear the buffer", function()
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bitser.clearBuffer()
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end)
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it("can write to new buffer after reading from read-only buffer", function()
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test_serdeser("bitser")
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bitser.loadData(ffi.new("uint8_t[4]", 195, 103, 118, 120), 4)
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test_serdeser("bitser")
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end)
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it("can dump and load LÖVE files", function()
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local v = {value = "value"}
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bitser.dumpLoveFile("some_file_name", v)
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assert.are.same(v, bitser.loadLoveFile("some_file_name"))
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end)
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it("can read and write simple cdata", function()
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test_serdeser(ffi.new('double', 42.5))
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end)
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it("can read and write cdata with a registered ctype", function()
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pcall(ffi.cdef,[[
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struct some_struct {
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int a;
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double b;
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};
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]])
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local value = ffi.new('struct some_struct', 42, 1.25)
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bitser.register('struct_type', ffi.typeof(value))
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test_serdeser_idempotent(value)
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bitser.unregister('struct_type')
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end)
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it("can read and write cdata without registering its ctype", function()
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pcall(ffi.cdef,[[
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struct some_struct {
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int a;
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double b;
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};
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]])
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local value = ffi.new('struct some_struct', 42, 1.25)
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test_serdeser_idempotent(value)
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end)
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it("cannot read from anonymous structs", function()
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local v = bitser.dumps(ffi.new('struct { int a; }'))
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assert.has_error(function() bitser.loads(v) end)
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end)
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it("can read and write simple multiple cdata of the same ctype without getting confused", function()
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test_serdeser({ffi.new('double', 42.5), ffi.new('double', 12), ffi.new('double', 0.01)})
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end)
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it("can read and write metatables", function()
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local t = setmetatable({foo="foo"}, {__index = {bar="bar"}})
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test_serdeser(t)
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assert.are.same(getmetatable(t), getmetatable(serdeser(t)))
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assert.are.same(serdeser(t).bar, "bar")
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end)
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end)
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