worker.rb

RUN_TIME       = 100
RESCUE_TIME    = 10
TERMFILE       = "term.txt"

class Job
  def self.perform(run_time, rescue_time)
    sleep(run_time)
    puts "Processed job!"
  rescue SignalException => e
    sleep rescue_time
    File.open(TERMFILE, 'w') do |file|
      file.puts "Caught Signal Exception: #{e.message}"
    end
  end
end

if $0 == __FILE__
  require 'fileutils'

  FileUtils.rm(TERMFILE) if File.exists?(TERMFILE)

  pid = Kernel.fork do
    Job.perform(RUN_TIME, RESCUE_TIME)
  end

  sleep(2)

  Process.kill("TERM", pid)
  Process.waitpid(pid)

  if File.exists?(TERMFILE) && File.read(TERMFILE).match(/Caught Signal Exception/)
    puts 'SUCCESS!'
  else
    puts 'FAILURE'
  end
end