Is there a Ruby WebMock equivalent for the Lua language?

Question

I have a Lua module I'm writing for making requests to a public API:

-- users.lua

local http     = require("socket.http")
local base_url = 'http://example.com'
local api_key  = "secret"
local users    = {}

function users.info(user_id)
  local request_url = base_url .. '/users/' .. user_id .. "?api_key=" .. api_key
  print("Requesting " .. request_url)
  local response = http.request(request_url)
  print("Response " .. response)
  return response
end

return users

This works, but I'd like to use TDD to finish writing the entire API wrapper.

I have a spec (using the busted framework) which works, but it makes an actual request to the API:

-- spec/users_spec.lua 

package.path = "../?.lua;" .. package.path

describe("Users", function()
  it("should fetch the users info", function()
    local users = require("users")
    local s = spy.on(users, "info")
    users.info("chip0db4")
    assert.spy(users.info).was_called_with("chip0db4")
  end)
end)

How do I mock this out, much like how WebMock works in Ruby, where the actual endpoint is not contacted? The solution doesn't need to be specific to the busted framework, btw.

Chip Castle Chip Castle · Accepted Answer · 2014-06-29T02:04:51

After receiving some excellent feedback from https://github.com/TannerRogalsky, as shown here https://gist.github.com/TannerRogalsky/b56bc886811f8f0a9d2a, I decided to write my own mocking library for http requests: https://github.com/chip/webmock. It's in it's very early stages, but it's at least a start. I'd be grateful for contributions to the repo or suggestion on other approaches or Lua modules available.

Is there a Ruby WebMock equivalent for the Lua language?

1 Answers