A simple ruby script to generate Facebook [Test Users](https://developers.facebook.com/docs/test_users/).

facebook_test_user.rb

require 'open-uri'
require 'json'

app_id = 'YOUR_FACEBOOK_APP_ID'
app_secret = 'YOUR_FACEBOOK_APP_SECRET'
full_name = 'John Smith'

token_request_url = "https://graph.facebook.com/oauth/access_token?client_id=#{app_id}"
token_request_url += "&client_secret=#{app_secret}&grant_type=client_credentials"

begin
  app_access_token = open(token_request_url).read.split('=')[1]
  app_access_token = app_access_token.split('|').join('%7C')

  full_name = full_name.split(' ').join('%20')

  url = "https://graph.facebook.com/#{app_id}/accounts/test-users?installed=true"
  url += "&name=#{full_name}&locale=en_US&permissions=read_stream&method=post"
  url += "&access_token=#{app_access_token}"

  user_attributes = JSON.parse open(url).read

  displayed_attributes = ['email', 'password']
  if displayed_attributes.all? {|k| user_attributes.keys.include?(k) }
    displayed_attributes.each do |attr|
      puts "#{attr.capitalize}: #{user_attributes[attr]}"
    end
  end
  
rescue Exception => e
  puts e.message
end