Fast and easy check and test new gems from the CLI.

check-gem.rb

#!/usr/bin/env ruby

require 'tmpdir'

unless gem_name = ARGV.first
  puts 'Usage: check-gem GEM_NAME'
  exit 1
end

Dir.mktmpdir("check-gem-#{gem_name}") do |tmpdir|
  open("#{tmpdir}/Gemfile", 'w') do |f|
    f.puts %{
source 'https://rubygems.org'

gem 'pry'
gem '#{gem_name}'
    }
  end

  open("#{tmpdir}/test.rb", 'w') do |f|
    f.puts %{
require 'pry'
require '#{gem_name}'

binding.pry
    }
  end

  Dir.chdir(tmpdir) do
    output = `bundle`

    unless $?.success?
      puts output
      exit 1
    end

    exec 'bundle exec ruby test.rb'
  end
end