module Mutant # Module providing isolationg module Isolation Error = Class.new(RuntimeError) module None # Call block in isolation # # @return [Object] # # @raise [Error] # if block terminates abnormal # # @api private # def self.call(&block) block.call rescue => exception fail Error, exception end end module Fork # Call block in isolation # # This isolation implements the fork strategy. # Future strategies will probably use a process pool that can # handle multiple mutation kills, in-isolation at once. # # @return [Object] # returns block execution result # # @raise [Error] # if block terminates abnormal # # @api private # def self.call(&block) Parallel.map([block], in_processes: 1) do block.call end.first rescue Parallel::DeadWorker => exception fail Error, exception end end # Fork end # Isolator end # Mutant