Ability to offload large payloads with dynamic_response scripts

[gautaz]

Hello,

First things first, smocker is dead simple to start with, keep up the good work!

Lately, I wanted to avoid putting a large piece of JSON directly in a mock definition so I tried to offload it to another file and read it from a Lua's script this way (I am not fluent in Lua by the way):

- request:
    method: GET
    path: /data/666
  dynamic_response:
    engine: lua
    script: >
      local io = require("io")
      local file = io.open("/data/666.json", "rb")
      if not file then return nil end
      local content = file:read "*a"
      file:close()
      return {
        body = content,
        headers = {
          ["Content-Type"] = {"application/json"}
        }
      }

But this fails because it cannot find io (whether I put a require or not).

At first I was wondering if GopherLua even supported file operations but this issue seems to confirm that this is the case.

May anyone shed some light on this particular point?