PlanOut.lua

PlanOut.lua is a Lua-based implementation of PlanOut. It is a complete port of the PlanOut API and language interpreter.

Installation

PlanOut.lua requires Lua 5.1 and Luarocks.

To install, pull down the repo and run make install. This will install PlanOut.lua dependencies via Luarocks.

Examples

A basic Experiment

local MyExperiment = Experiment:new()

function MyExperiment:assign(param, args)
  param:set("button_color", UniformChoice:new({["choices"] = {"#ff0000", "#00ff00"}, ["unit"] = arg["userid"]}))
  param:set("button_text", UniformChoice:new({["choices"] = {"I voted", "I am a voter"}, ["unit"] = arg["userid"]}))
end

function MyExperiment:setup()
  self.salt = "MyExperimentSalt"
end

-- later in the code

local my_exp = MyExperiment:new({["userid"] = 101})
local color = my_exp:get("button_color")
local text = my_exp:get("button_text")

or run through the interpreter

local compiled = {
  ["op"] = "seq",
  ["seq"] = {
    {
      ["op"] = "set",
      ["var"] = "button_color",
      ["value"] = {
        ["op"] = "uniformChoice",
        ["unit"] = {
          ["op"] = "get",
          ["var"] = "userid"
        },
        ["choices"] = {
          ["op"] = "array",
          ["values"] = {"#ff0000", "#00ff00"}
        }
      }
    },
    {
      ["op"] = "set",
      ["var"] = "button_text",
      ["value"] = {
        ["op"] = "uniformChoice",
        ["unit"] = {
          ["op"] = "get",
          ["var"] = "userid"
        },
        ["choices"] = {
          ["op"] = "array",
          ["values"] = {"I voted", "I am a voter"}
        }
      }
    }
  }
}
-- Interpreter:new(serialization, experimentSalt, inputs, environment)
local int = Interpreter:new(compiled, "MyExperimentSalt", {['userid'] = 101})
local params = int:getParams()
local color = params:get("button_color")
local text = params:get("button_text")

The compiled serialization can be stored as json and decoded with cjson or can be generated else where in the scripts

Testing

PlanOut.lua tests can be run via the command make test, which runs every test.

If you want to run individual test files or tests, you can call them from the tests directory. Use lua test.lua -v <testfile> to run tests from a specific test file and lua test.lua -v <testfile>.<specifictest> to call a specific test from within that testfile.