A command line tool to help with testing pull requests.

fast-one.rb

#!/usr/bin/env ruby

# Before you use this:
# git clone git://github.com/some-other-user/their-repo
#   This assumes that origin is the repo that you are merging into!

require 'rubygems'
gem 'rest-client'
gem 'crack'
require 'rest-client'
require 'crack'

CURRENT_PATH = ENV['PWD'].freeze
pull_request_number = ARGV[0].freeze
puts "Did not specify pull_request_number" and exit(-1) unless pull_request_number

def execute_commands(*args)
  commands = [%(cd #{CURRENT_PATH})]
  commands += args
  system(commands.join(';'))
end

remote_origin_url = `cd #{CURRENT_PATH}; git config remote.origin.url`.strip
api_remote_repo_url = api_remote_repo_url = remote_origin_url.sub(/(git|https?):\/\//,'https://api.').sub(/\.git$/,'').sub("github.com/",'github.com/repos/')

api_pull_request_url = "#{api_remote_repo_url}/pulls/#{pull_request_number}"
puts api_pull_request_url

response = RestClient.get(api_pull_request_url, :accept  =>  :json)
pull_request = Crack::JSON.parse(response.body)

if pull_request['merged']
  puts "Pull request number(#{pull_request_number}) already merged"

else
  execute_commands(
    "git checkout --track -B #{pull_request['base']['ref']} origin/#{pull_request['base']['ref']}",
    "git pull --rebase"
  )

  return unless execute_commands(%(git checkout -B #{pull_request_number}))

  if execute_commands(
    %(git remote add #{pull_request_number}-source #{pull_request['head']['repo']['git_url']}),
    %(git pull #{pull_request_number}-source #{pull_request['head']['ref']})
  )
    execute_commands("bundle exec rake")
  end
end